{"id":793,"date":"2026-02-07T05:10:19","date_gmt":"2026-02-07T05:10:19","guid":{"rendered":"https:\/\/zeeyielec.com\/?page_id=793"},"modified":"2026-02-12T10:12:29","modified_gmt":"2026-02-12T10:12:29","slug":"current-limiting-fuses","status":"publish","type":"page","link":"https:\/\/zeeyielec.com\/pt\/transformer-accessories\/current-limiting-fuses\/","title":{"rendered":"Fus\u00edveis limitadores de corrente"},"content":{"rendered":"\n<div class=\"wp-block-stackable-columns alignfull stk-block-columns stk-block stk-0d5278d\" data-block-id=\"0d5278d\"><div class=\"stk-row stk-inner-blocks stk-block-content stk-content-align stk-0d5278d-column alignfull\">\n<div class=\"wp-block-stackable-column stk-block-column stk-column stk-block stk-b34931c\" data-v=\"4\" data-block-id=\"b34931c\"><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-b34931c-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-b34931c-inner-blocks\">\n<!-- =========================================================================\n     SEC1 HERO MODULE (Current Limiting Fuses | ZeeyiElec)\n     \u590d\u5236\u5230 WordPress \u53e4\u817e\u5821 \"Custom HTML\" \u533a\u5757\n     \u8bf4\u660e\uff1a\n     1) \u5b8c\u5168\u6cbf\u7528\u60a8\u63d0\u4f9b\u7684 Hero \u7ed3\u6784\u4e0e\u6837\u5f0f\u4f53\u7cfb\n     2) \u5173\u952e\u8bcd\u4e3b\u8f74\uff1acurrent limiting fuse\n     3) \u5f53\u524d\u4e3a Current Limiting Fuses \u7cfb\u5217\u9875\u8bed\u4e49\uff08\u975e Bay-O-Net \u9875\u9762\uff09\n     ========================================================================= -->\n\n<style>\n    \/* --- 1. \u57fa\u7840\u53d8\u91cf\u4e0e\u91cd\u7f6e --- *\/\n    .hero-wrapper {\n        --hero-bg-dark: #102136;\n        --hero-bg-gradient-end: #0d1b2a;\n        --hero-cyan: #78d3ca;\n        --hero-cyan-hover: #5bbdb4;\n        --hero-text-white: #ffffff;\n        --hero-text-gray: #d1d5db; \/* gray-300 *\/\n        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<\/span>\n\n                <h1 class=\"hero-title\">\n                    Current Limiting Fuses for Distribution Transformer Protection\n                <\/h1>\n\n                <p class=\"hero-subtitle\">\n                    Medium-voltage current limiting fuse solutions engineered for rapid fault-current cutoff, high interrupting capability, and reliable coordination in distribution transformer protection schemes.\n                <\/p>\n\n                <div class=\"hero-support\">\n                    <span class=\"hero-support-item\">\n                        <span class=\"hero-dot\"><\/span>Backup Protection Integration\n                    <\/span>\n                    <span class=\"hero-separator\">\u2022<\/span>\n                    \n                    <span class=\"hero-support-item\">\n                        <span class=\"hero-dot\"><\/span>Fast Technical Response\n                    <\/span>\n                    <span class=\"hero-separator\">\u2022<\/span>\n                    \n                    <span class=\"hero-support-item\">\n                        <span class=\"hero-dot\"><\/span>Export Documentation\n                    <\/span>\n                <\/div>\n\n                <div class=\"hero-cta-group\">\n                    <a href=\"#ct-popup-862\" class=\"hero-btn hero-btn-primary\">\n                        Request Quote\n                    <\/a>\n                    <a href=\"#sec-specifications\" class=\"hero-btn hero-btn-secondary\">\n                        View Specifications\n                    <\/a>\n                <\/div>\n            <\/div>\n        <\/div>\n\n        <div class=\"hero-bottom-bar\">\n            <div class=\"hero-bar-content\">\n                <div class=\"hero-stats-grid\">\n                    <div class=\"hero-stat-item first-item\">\n                        <span class=\"hero-stat-label\">Product Type<\/span>\n                        <span class=\"hero-stat-value\">Current Limiting Fuse<\/span>\n                    <\/div>\n                    <div class=\"hero-stat-item bordered-desktop\">\n                        <span class=\"hero-stat-label\">Protection Function<\/span>\n                        <span class=\"hero-stat-value\">High Fault Interruption<\/span>\n                    <\/div>\n                    <div class=\"hero-stat-item bordered-desktop\">\n                        <span class=\"hero-stat-label\">Application<\/span>\n                        <span class=\"hero-stat-value\">Oil-Filled Distribution Transformers<\/span>\n                    <\/div>\n                <\/div>\n            <\/div>\n        <\/div>\n    <\/section>\n<\/div>\n\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-stackable-columns alignfull stk-block-columns stk-block stk-bfc47c1\" data-block-id=\"bfc47c1\"><div class=\"stk-row stk-inner-blocks stk-block-content stk-content-align stk-bfc47c1-column alignfull\">\n<div class=\"wp-block-stackable-column stk-block-column 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limit *\/\n        }\n        \n        .sec2-h2 {\n            font-size: 32px;\n        }\n    }\n\n    @media (max-width:689px) {\n        #sec2-definition {\n            padding: var(--sec2-padding-mobile);\n        }\n\n        .sec2-h2 {\n            font-size: 28px;\n        }\n\n        .sec2-intro {\n            font-size: 16px;\n        }\n\n        .feature-item {\n            align-items: flex-start;\n        }\n\n        .f-icon {\n            margin-top: 0;\n        }\n    }\n<\/style>\n\n<!-- SEC2 MODULE START -->\n<section id=\"sec2-definition\">\n    <div class=\"sec2-inner\">\n        \n        <!-- LEFT: Definition Text -->\n        <div class=\"content-col\">\n            <span class=\"sec2-eyebrow\">Protection Fundamentals<\/span>\n            \n            <h2 class=\"sec2-h2\">What Is a Current Limiting Fuse and How It Protects Transformers?<\/h2>\n            \n            <p class=\"sec2-intro\">\n                A current limiting fuse is designed to interrupt high fault currents before they reach destructive peak levels. In transformer protection systems, it helps reduce thermal and mechanical stress while supporting selective coordination with other protective devices.\n            <\/p>\n\n            <div class=\"feature-list\">\n                <!-- Item 1: Energy Limitation -->\n                <div class=\"feature-item\">\n                    <div class=\"f-icon\"><\/div>\n                    <div class=\"f-text\">\n                        <span class=\"f-title\">Energy Limitation<\/span>\n                        \u2014 rapidly clears high prospective short-circuit currents in the initial stages, significantly reducing let-through energy.\n                    <\/div>\n                <\/div>\n                <!-- Item 2: Arc-Quenching -->\n                <div class=\"feature-item\">\n                    <div class=\"f-icon\"><\/div>\n                    <div class=\"f-text\">\n                        <span class=\"f-title\">Arc-Quenching Design<\/span>\n                        \u2014 forces the internal arc to be partitioned and cooled by filler media, typically suppressing faults within the first half-cycle.\n                    <\/div>\n                <\/div>\n                <!-- Item 3: Coordination -->\n                <div class=\"feature-item\">\n                    <div class=\"f-icon\"><\/div>\n                    <div class=\"f-text\">\n                        <span class=\"f-title\">Backup Protection<\/span>\n                        \u2014 operates effectively alongside primary devices (such as Bay-O-Nets) to handle high-fault ranges and improve system selectivity.\n                    <\/div>\n                <\/div>\n            <\/div>\n\n            <div class=\"transition-note\">\n                The next section presents specific current limiting fuse models, dimensional variants, and key parameter considerations for engineering selection.\n            <\/div>\n        <\/div>\n\n        <!-- RIGHT: Mechanism Diagram (CSS Flowchart) -->\n        <div class=\"diagram-col\">\n            <div class=\"mech-diagram\">\n                \n                <!-- Node 1: Top (Fault Occurs) -->\n                <div class=\"d-node\">\n                    <span class=\"d-label\">Fault Event<\/span>\n                    <div class=\"d-title\">High Prospective <br> Short-Circuit Current<\/div>\n                <\/div>\n\n                <!-- Connector -->\n                <div class=\"connector active\"><\/div>\n\n                <!-- Node 2: Core (Highlighted - Fuse Action) -->\n                <div class=\"d-node core\">\n                    <span class=\"d-label\" style=\"color: var(--theme-accent);\">Limiting Action<\/span>\n                    <div class=\"d-title\">Element Melts Rapidly &#038; <br> Arc is Quenched in Filler<\/div>\n                <\/div>\n\n                <!-- Connector -->\n                <div class=\"connector active\"><\/div>\n\n                <!-- Node 3: Bottom (Result) -->\n                <div class=\"d-node\">\n                    <span class=\"d-label\">System Protection<\/span>\n                    <div class=\"d-title\">Peak Current Suppressed &#038; <br> Thermal Stress Reduced<\/div>\n                <\/div>\n\n            <\/div>\n        <\/div>\n\n    <\/div>\n<\/section>\n<!-- SEC2 MODULE END -->\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-stackable-columns alignfull stk-block-columns stk-block stk-75636e0\" data-block-id=\"75636e0\"><div class=\"stk-row stk-inner-blocks stk-block-content stk-content-align stk-75636e0-column alignfull\">\n<div class=\"wp-block-stackable-column stk-block-column stk-column stk-block stk-ea347fd\" data-v=\"4\" data-block-id=\"ea347fd\"><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-ea347fd-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-ea347fd-inner-blocks\">\n<style>\n    \/* --- CSS VARIABLES (SEC3 Specific) --- *\/\n    .sec3-wrapper {\n        \/* Core Colors *\/\n        --sec3-bg-section: #ffffff;\n        --sec3-bg-card: #ffffff;\n        --sec3-bg-light: #f8fafc;\n        \n        \/* Text Colors *\/\n        --sec3-text-dark: #0f172a;\n        --sec3-text-body: #334155;\n        --sec3-text-muted: #64748b;\n        \n        \/* Borders & Accents *\/\n        --sec3-border: #e2e8f0;\n        --sec3-accent: #78d3ca;\n        --sec3-accent-hover: #5ebfb5;\n\n        \/* Layout & Spacing *\/\n        --sec3-padding-desktop: 96px 24px;\n        --sec3-padding-mobile: 72px 16px;\n        --sec3-radius: 16px;\n        \n        font-family: 'Inter', ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, \"Segoe UI\", Roboto, Helvetica, Arial, sans-serif;\n        color: var(--sec3-text-body);\n        line-height: 1.6;\n        box-sizing: border-box;\n        padding: var(--sec3-padding-desktop);\n        background-color: var(--sec3-bg-section);\n        width: 100%;\n    }\n\n    .sec3-wrapper * {\n        box-sizing: border-box;\n    }\n\n    .sec3-container {\n        max-width: 1240px;\n        margin: 0 auto;\n    }\n\n    \/* --- 1. 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Header Area -->\n        <div class=\"sec3-header\">\n            <span class=\"sec3-eyebrow\">Product Variants<\/span>\n            <h2 class=\"sec3-h2\">ELSP Current Limiting Backup Fuse Variants<\/h2>\n            <p class=\"sec3-intro\">\n                The ELSP series current limiting backup fuse is engineered for highly reliable transformer protection. Designed to operate in selective coordination with low-current protection devices (such as a Bay-O-Net assembly), this current limiting fuse provides a critical second layer of defense, instantly interrupting high fault currents to minimize equipment stress.\n            <\/p>\n        <\/div>\n\n        <!-- 2. Product Hero Card -->\n        <div class=\"sec3-hero-card\">\n            <div class=\"sec3-hero-img-wrap\">\n                <!-- \u56fa\u5b9a\u53ef\u66ff\u6362\u4e3b\u56fe URL \u4e0e Alt -->\n                <img decoding=\"async\" src=\"https:\/\/zeeyielec.com\/wp-content\/uploads\/2026\/02\/Zeeyi-Electrical-ELSP-Current-Limiting-Backup-Fuse.webp\" alt=\"ZeeyiElec ELSP current limiting backup fuse for transformer protection\" loading=\"lazy\">\n            <\/div>\n            <div class=\"sec3-hero-content\">\n                <h3>Key Application Attributes<\/h3>\n                <ul class=\"sec3-hero-bullets\">\n                    <li>Transformer backup protection<\/li>\n                    <li>Coordination with low-current protection devices (e.g., Bay-O-Net)<\/li>\n                    <li>Cylindrical cartridge format<\/li>\n                    <li>Export project documentation support<\/li>\n                <\/ul>\n            <\/div>\n        <\/div>\n\n        <!-- 3. Voltage Variant Cards -->\n        <div id=\"sec3-voltage-classes\" class=\"sec3-cards-grid\">\n            \n            <!-- Card A: 15.5kV -->\n            <div class=\"sec3-variant-card\">\n                <h3 class=\"sec3-h3\">(8.3)15.5 kV Class<\/h3>\n                <ul class=\"sec3-spec-list\">\n                    <li class=\"sec3-spec-item\">\n                        <span class=\"sec3-spec-label\">Current Range<\/span>\n                        <span class=\"sec3-spec-value\">20 \u2013 315 A<\/span>\n                    <\/li>\n                    <li class=\"sec3-spec-item\">\n                        <span class=\"sec3-spec-label\">Breaking Current<\/span>\n                        <span class=\"sec3-spec-value\">50 kA<\/span>\n                    <\/li>\n                    <li class=\"sec3-spec-item\">\n                        <span class=\"sec3-spec-label\">Tube Dimension (C)<\/span>\n                        <span class=\"sec3-spec-value\">2.1 in (53 mm) \/ <br>3.0 in (76 mm)<\/span>\n                    <\/li>\n                    <li class=\"sec3-spec-item\">\n                        <span class=\"sec3-spec-label\">Terminal (MA)<\/span>\n                        <span class=\"sec3-spec-value\">M6 \/ M10<\/span>\n                    <\/li>\n                    <li class=\"sec3-spec-item sec3-prefix-row\">\n                        <span class=\"sec3-spec-label\">Typical Model Prefix<\/span>\n                        <span class=\"sec3-spec-value\">XRNTS-(8.3)15.5-XX<\/span>\n                    <\/li>\n                <\/ul>\n                <a href=\"#sec-specifications\" class=\"sec3-btn-link\">View full specs <span>&rarr;<\/span><\/a>\n            <\/div>\n\n            <!-- Card B: 25kV -->\n            <div class=\"sec3-variant-card\">\n                <h3 class=\"sec3-h3\">25 kV Class<\/h3>\n                <ul class=\"sec3-spec-list\">\n                    <li class=\"sec3-spec-item\">\n                        <span class=\"sec3-spec-label\">Current Range<\/span>\n                        <span class=\"sec3-spec-value\">20 \u2013 200 A<\/span>\n                    <\/li>\n                    <li class=\"sec3-spec-item\">\n                        <span class=\"sec3-spec-label\">Breaking Current<\/span>\n                        <span class=\"sec3-spec-value\">50 kA<\/span>\n                    <\/li>\n                    <li class=\"sec3-spec-item\">\n                        <span class=\"sec3-spec-label\">Tube Dimension (C)<\/span>\n                        <span class=\"sec3-spec-value\">3.0 in (76 mm)<\/span>\n                    <\/li>\n                    <li class=\"sec3-spec-item\">\n                        <span class=\"sec3-spec-label\">Terminal (MA)<\/span>\n                        <span class=\"sec3-spec-value\">M10<\/span>\n                    <\/li>\n                    <li class=\"sec3-spec-item sec3-prefix-row\">\n                        <span class=\"sec3-spec-label\">Typical Model Prefix<\/span>\n                        <span class=\"sec3-spec-value\">XRNTS-25-XX<\/span>\n                    <\/li>\n                <\/ul>\n                <a href=\"#sec-specifications\" class=\"sec3-btn-link\">View full specs <span>&rarr;<\/span><\/a>\n            <\/div>\n\n            <!-- Card C: 40.5kV -->\n            <div class=\"sec3-variant-card\">\n                <h3 class=\"sec3-h3\">(38)40.5 kV Class<\/h3>\n                <ul class=\"sec3-spec-list\">\n                    <li class=\"sec3-spec-item\">\n                        <span class=\"sec3-spec-label\">Current Range<\/span>\n                        <span class=\"sec3-spec-value\">10 \u2013 165 A<\/span>\n                    <\/li>\n                    <li class=\"sec3-spec-item\">\n                        <span class=\"sec3-spec-label\">Breaking Current<\/span>\n                        <span class=\"sec3-spec-value\">31.5 kA<\/span>\n                    <\/li>\n                    <li class=\"sec3-spec-item\">\n                        <span class=\"sec3-spec-label\">Tube Dimension (C)<\/span>\n                        <span class=\"sec3-spec-value\">3.0 in (76 mm)<\/span>\n                    <\/li>\n                    <li class=\"sec3-spec-item\">\n                        <span class=\"sec3-spec-label\">Terminal (MA)<\/span>\n                        <span class=\"sec3-spec-value\">M10<\/span>\n                    <\/li>\n                    <li class=\"sec3-spec-item sec3-prefix-row\">\n                        <span class=\"sec3-spec-label\">Typical Model Prefix<\/span>\n                        <span class=\"sec3-spec-value\">XRNTS-(38)40.5-XX<\/span>\n                    <\/li>\n                <\/ul>\n                <a href=\"#sec-specifications\" class=\"sec3-btn-link\">View full specs <span>&rarr;<\/span><\/a>\n            <\/div>\n\n        <\/div>\n\n        <!-- 4. Technical Snapshot Table -->\n        <div class=\"sec3-table-section\">\n            <h3>Technical Snapshot<\/h3>\n            <div class=\"sec3-table-container\">\n                <table class=\"sec3-table\">\n                    <thead>\n                        <tr>\n                            <th>Voltage Class (kV)<\/th>\n                            <th>Model Series<\/th>\n                            <th>Current Range (A)<\/th>\n                            <th>Breaking Current (kA)<\/th>\n                            <th>Tube C<\/th>\n                            <th>Terminal MA<\/th>\n                        <\/tr>\n                    <\/thead>\n                    <tbody>\n                        <tr>\n                            <td>(8.3)15.5 kV<\/td>\n                            <td>XRNTS-(8.3)15.5<\/td>\n                            <td>20 \u2013 315<\/td>\n                            <td>50<\/td>\n                            <td>2.1&#8243; \/ 3.0&#8243;<\/td>\n                            <td>M6 \/ M10<\/td>\n                        <\/tr>\n                        <tr>\n                            <td>25 kV<\/td>\n                            <td>XRNTS-25<\/td>\n                            <td>20 \u2013 200<\/td>\n                            <td>50<\/td>\n                            <td>3.0&#8243; (76 mm)<\/td>\n                            <td>M10<\/td>\n                        <\/tr>\n                        <tr>\n                            <td>(38)40.5 kV<\/td>\n                            <td>XRNTS-(38)40.5<\/td>\n                            <td>10 \u2013 165<\/td>\n                            <td>31.5<\/td>\n                            <td>3.0&#8243; (76 mm)<\/td>\n                            <td>M10<\/td>\n                        <\/tr>\n                    <\/tbody>\n                <\/table>\n            <\/div>\n        <\/div>\n\n    <\/div>\n<\/section>\n<!-- SEC3 MODULE END -->\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n<div 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margin-bottom: 48px;\n    }\n\n    .sec4-eyebrow {\n        display: inline-block;\n        font-size: 14px;\n        font-weight: 700;\n        text-transform: uppercase;\n        letter-spacing: 0.05em;\n        color: var(--sec4-accent);\n        margin-bottom: 16px;\n    }\n\n    .sec4-h2 {\n        font-size: 36px;\n        font-weight: 800;\n        color: var(--sec4-text-dark);\n        margin: 0 0 20px 0;\n        line-height: 1.25;\n    }\n\n    .sec4-intro {\n        font-size: 18px;\n        color: var(--sec4-text-muted);\n        margin: 0;\n    }\n\n    \/* --- Layer B: QUICK SPEC CHIPS --- *\/\n    .sec4-chips {\n        display: grid;\n        grid-template-columns: repeat(3, 1fr);\n        gap: 16px;\n        margin-bottom: 48px;\n    }\n\n    .sec4-chip {\n        background-color: var(--sec4-bg-light);\n        border: 1px solid var(--sec4-border);\n        border-radius: 8px;\n        padding: 16px 20px;\n        display: flex;\n        flex-direction: column;\n      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hidden;\n        clip: rect(0, 0, 0, 0);\n        white-space: nowrap;\n        border-width: 0;\n    }\n\n    .sec4-table th {\n        background-color: var(--sec4-bg-light);\n        color: var(--sec4-text-dark);\n        font-weight: 700;\n        font-size: 14px;\n        padding: 18px 20px;\n        border-bottom: 2px solid var(--sec4-border);\n        white-space: nowrap;\n    }\n\n    .sec4-table td {\n        padding: 16px 20px;\n        font-size: 15px;\n        color: var(--sec4-text-body);\n        border-bottom: 1px solid var(--sec4-border);\n    }\n\n    .sec4-table tbody tr:hover {\n        background-color: var(--sec4-bg-light);\n    }\n\n    .sec4-table tr:last-child td {\n        border-bottom: none;\n    }\n\n    \/* Highlight Series \/ Models *\/\n    .sec4-table td:nth-child(2) {\n        font-family: monospace;\n        color: var(--sec4-accent);\n        font-weight: 600;\n        font-size: 14px;\n    }\n\n    \/* --- C-1: MAIN TABLE SPECIFIC --- *\/\n    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  transition: background-color 0.2s ease;\n    }\n\n    .sec4-accordion summary:hover {\n        background-color: var(--sec4-accent-soft);\n    }\n\n    .sec4-accordion summary::-webkit-details-marker {\n        display: none; \/* Safari specific *\/\n    }\n\n    \/* Custom + \/ - icon for accordion *\/\n    .sec4-accordion summary::after {\n        content: '+';\n        font-size: 24px;\n        font-weight: 400;\n        color: var(--sec4-text-muted);\n        line-height: 1;\n        transition: transform 0.3s ease;\n    }\n\n    .sec4-accordion[open] summary {\n        border-bottom: 1px solid var(--sec4-border);\n    }\n\n    .sec4-accordion[open] summary::after {\n        content: '\u2212'; \/* Minus sign *\/\n        color: var(--sec4-accent);\n    }\n\n    .sec4-accordion-content {\n        padding: 24px;\n    }\n\n    .sec4-sub-table {\n        min-width: 760px;\n    }\n\n    \/* --- Layer D: ENGINEERING NOTES --- *\/\n    .sec4-note-box {\n        background-color: var(--sec4-bg-light);\n        border-left: 4px solid var(--sec4-accent);\n        border-radius: 0 8px 8px 0;\n        padding: 24px 32px;\n    }\n\n    .sec4-note-box h4 {\n        margin: 0 0 16px 0;\n        font-size: 18px;\n        font-weight: 700;\n        color: var(--sec4-text-dark);\n    }\n\n    .sec4-note-list {\n        list-style: none;\n        padding: 0;\n        margin: 0;\n        display: flex;\n        flex-direction: column;\n        gap: 12px;\n    }\n\n    .sec4-note-list li {\n        position: relative;\n        padding-left: 20px;\n        font-size: 14px;\n        color: var(--sec4-text-muted);\n    }\n\n    .sec4-note-list li::before {\n        content: \"\u2022\";\n        position: absolute;\n        left: 0;\n        top: 0;\n        color: var(--sec4-accent);\n        font-weight: bold;\n        font-size: 18px;\n        line-height: 1.4;\n    }\n\n    .sec4-note-list strong {\n        color: var(--sec4-text-body);\n        font-weight: 600;\n    }\n\n    \/* --- RESPONSIVE --- *\/\n    @media (max-width:999px) {\n        .sec4-chips {\n            grid-template-columns: repeat(2, 1fr);\n        }\n    }\n\n    @media (max-width:689px) {\n        .sec4-wrapper {\n            padding: var(--sec4-padding-mobile);\n        }\n\n        .sec4-h2 {\n            font-size: 28px;\n        }\n\n        .sec4-intro {\n            font-size: 16px;\n        }\n\n        .sec4-chips {\n            grid-template-columns: 1fr;\n            gap: 12px;\n        }\n\n        .sec4-accordion summary {\n            font-size: 16px;\n            padding: 16px 20px;\n        }\n        \n        .sec4-accordion-content {\n            padding: 16px 0; \/* Let inner table wrap handle the padding on mobile *\/\n        }\n        \n        .sec4-accordion-content .sec4-table-wrap {\n            margin-bottom: 0;\n            border-left: none;\n            border-right: none;\n            border-radius: 0;\n        }\n\n        .sec4-note-box {\n            padding: 20px;\n        }\n    }\n<\/style>\n\n<!-- SEC4 MODULE START -->\n<section id=\"sec-specifications\" class=\"sec4-wrapper\">\n    <div class=\"sec4-container\">\n\n        <!-- Layer A: Header -->\n        <div class=\"sec4-header\">\n            <span class=\"sec4-eyebrow\">Engineering Data<\/span>\n            <h2 class=\"sec4-h2\">Engineering Specifications for ELSP Current Limiting Backup Fuses<\/h2>\n            <p class=\"sec4-intro\">\n                This section provides dimensional and electrical data for the ELSP series current limiting fuse. These specifications assist in preliminary selection and coordination for transformer protection. Final configurations must be confirmed based on specific project conditions.\n            <\/p>\n        <\/div>\n\n        <!-- Layer B: Quick Spec Chips -->\n        <div class=\"sec4-chips\">\n            <div class=\"sec4-chip\">\n                <span class=\"sec4-chip-label\">Product Type<\/span>\n                <span class=\"sec4-chip-value\">Current Limiting Backup Fuse<\/span>\n            <\/div>\n            <div class=\"sec4-chip\">\n                <span class=\"sec4-chip-label\">Voltage Classes<\/span>\n                <span class=\"sec4-chip-value\">(8.3)15.5kV \/ 25kV \/ (38)40.5kV<\/span>\n            <\/div>\n            <div class=\"sec4-chip\">\n                <span class=\"sec4-chip-label\">Rated Current Range<\/span>\n                <span class=\"sec4-chip-value\">10 \u2013 315 A<\/span>\n            <\/div>\n            <div class=\"sec4-chip\">\n                <span class=\"sec4-chip-label\">Breaking Current<\/span>\n                <span class=\"sec4-chip-value\">Up to 50 kA (Class dependent)<\/span>\n            <\/div>\n            <div class=\"sec4-chip\">\n                <span class=\"sec4-chip-label\">Mounting Form<\/span>\n                <span class=\"sec4-chip-value\">Cylindrical Cartridge<\/span>\n            <\/div>\n            <div class=\"sec4-chip\">\n                <span class=\"sec4-chip-label\">Typical Use<\/span>\n                <span class=\"sec4-chip-value\">Transformer Backup Protection<\/span>\n            <\/div>\n        <\/div>\n\n        <!-- Layer C-1: Main Overview Table -->\n        <div class=\"sec4-table-wrap\">\n            <table class=\"sec4-table sec4-main-table\">\n                <caption>Comprehensive overview of ELSP current limiting fuse parameters by voltage class<\/caption>\n                <thead>\n                    <tr>\n                        <th scope=\"col\">Voltage Class (kV)<\/th>\n                        <th scope=\"col\">Series \/ Model Rule<\/th>\n                        <th scope=\"col\">Rated Current Range (A)<\/th>\n                        <th scope=\"col\">Breaking Current (kA)<\/th>\n                        <th scope=\"col\">Tube Diameter C<\/th>\n                        <th scope=\"col\">Terminal Thread (MA)<\/th>\n                    <\/tr>\n                <\/thead>\n                <!-- DATA START -->\n                <tbody>\n                    <tr>\n                        <td>(8.3)15.5 kV<\/td>\n                        <td>XRNT5-(8.3)15.5<\/td>\n                        <td>20 \u2013 315 A<\/td>\n                        <td>50 kA<\/td>\n                        <td>2.1&#8243; (53 mm) \/ 3.0&#8243; (76 mm)<\/td>\n                        <td>M6 \/ M10<\/td>\n                    <\/tr>\n                    <tr>\n                        <td>25 kV<\/td>\n                        <td>XRNT5-25<\/td>\n                        <td>20 \u2013 200 A<\/td>\n                        <td>50 kA<\/td>\n                        <td>3.0&#8243; (76 mm)<\/td>\n                        <td>M10<\/td>\n                    <\/tr>\n                    <tr>\n                        <td>(38)40.5 kV<\/td>\n                        <td>XRNT5-(38)40.5<\/td>\n                        <td>10 \u2013 165 A<\/td>\n                        <td>31.5 kA<\/td>\n                        <td>3.0&#8243; (76 mm)<\/td>\n                        <td>M10<\/td>\n                    <\/tr>\n                <\/tbody>\n                <!-- DATA END -->\n            <\/table>\n        <\/div>\n\n        <!-- Layer C-2: Accordion Sub-tables -->\n        <div class=\"sec4-accordion-group\">\n            <h3>Detailed Class Ratings<\/h3>\n            \n            <!-- (8.3)15.5kV Accordion (Default Open) -->\n            <details class=\"sec4-accordion\" open>\n                <summary>Table A: (8.3)15.5kV Class Detailed Ratings<\/summary>\n                <div class=\"sec4-accordion-content\">\n                    <div class=\"sec4-table-wrap\" style=\"margin-bottom: 0;\">\n                        <table class=\"sec4-table sec4-sub-table\">\n                            <caption>15.5kV Class detailed specification breakdown<\/caption>\n                            <thead>\n                                <tr>\n                                    <th scope=\"col\">Catalog \/ Model<\/th>\n                                    <th scope=\"col\">Rated Current (A)<\/th>\n                                    <th scope=\"col\">Dimension C<\/th>\n                                    <th scope=\"col\">Terminal MA<\/th>\n                                    <th scope=\"col\">Remarks<\/th>\n                                <\/tr>\n                            <\/thead>\n                            <!-- DATA START -->\n                            <tbody>\n                                <tr>\n                                    <td>XRNT5-(8.3)15.5-20&#8230;175<\/td>\n                                    <td>20, 25, 31.5&#8230; 175 A<\/td>\n                                    <td>2.1 in (53 mm)<\/td>\n                                    <td>M6<\/td>\n                                    <td>Coordination range confirmed via curve<\/td>\n                                <\/tr>\n                                <tr>\n                                    <td>XRNT5-(8.3)15.5-200&#8230;315<\/td>\n                                    <td>200, 250, 315 A<\/td>\n                                    <td>3.0 in (76 mm)<\/td>\n                                    <td>M10<\/td>\n                                    <td>For higher fault current backup<\/td>\n                                <\/tr>\n                            <\/tbody>\n                            <!-- DATA END -->\n                        <\/table>\n                    <\/div>\n                <\/div>\n            <\/details>\n\n            <!-- 25kV Accordion -->\n            <details class=\"sec4-accordion\">\n                <summary>Table B: 25kV Class Detailed Ratings<\/summary>\n                <div class=\"sec4-accordion-content\">\n                    <div class=\"sec4-table-wrap\" style=\"margin-bottom: 0;\">\n                        <table class=\"sec4-table sec4-sub-table\">\n                            <caption>25kV Class detailed specification breakdown<\/caption>\n                            <thead>\n                                <tr>\n                                    <th scope=\"col\">Catalog \/ Model<\/th>\n                                    <th scope=\"col\">Rated Current (A)<\/th>\n                                    <th scope=\"col\">Dimension C<\/th>\n                                    <th scope=\"col\">Terminal MA<\/th>\n                                    <th scope=\"col\">Remarks<\/th>\n                                <\/tr>\n                            <\/thead>\n                            <!-- DATA START -->\n                            <tbody>\n                                <tr>\n                                    <td>XRNT5-25-20&#8230;200<\/td>\n                                    <td>20, 25, 31.5&#8230; 200 A<\/td>\n                                    <td>3.0 in (76 mm)<\/td>\n                                    <td>M10<\/td>\n                                    <td>Universal dimension for 25kV class<\/td>\n                                <\/tr>\n                            <\/tbody>\n                            <!-- DATA END -->\n                        <\/table>\n                    <\/div>\n                <\/div>\n            <\/details>\n\n            <!-- 40.5kV Accordion -->\n            <details class=\"sec4-accordion\">\n                <summary>Table C: (38)40.5kV Class Detailed Ratings<\/summary>\n                <div class=\"sec4-accordion-content\">\n                    <div class=\"sec4-table-wrap\" style=\"margin-bottom: 0;\">\n                        <table class=\"sec4-table sec4-sub-table\">\n                            <caption>40.5kV Class detailed specification breakdown<\/caption>\n                            <thead>\n                                <tr>\n                                    <th scope=\"col\">Catalog \/ Model<\/th>\n                                    <th scope=\"col\">Rated Current (A)<\/th>\n                                    <th scope=\"col\">Dimension C<\/th>\n                                    <th scope=\"col\">Terminal MA<\/th>\n                                    <th scope=\"col\">Remarks<\/th>\n                                <\/tr>\n                            <\/thead>\n                            <!-- DATA START -->\n                            <tbody>\n                                <tr>\n                                    <td>XRNT5-(38)40.5-10&#8230;165<\/td>\n                                    <td>10, 20, 31.5&#8230; 165 A<\/td>\n                                    <td>3.0 in (76 mm)<\/td>\n                                    <td>M10<\/td>\n                                    <td>Designed for extended voltage systems<\/td>\n                                <\/tr>\n                            <\/tbody>\n                            <!-- DATA END -->\n                        <\/table>\n                    <\/div>\n                <\/div>\n            <\/details>\n\n        <\/div>\n\n        <!-- Layer D: Engineering Notes -->\n        <div class=\"sec4-note-box\">\n            <h4>Engineering &#038; Application Notes<\/h4>\n            <ul class=\"sec4-note-list\">\n                <li><strong>Coordination Note:<\/strong> This current limiting fuse must be evaluated and coordinated with Bay-O-Net or other upstream\/downstream devices for proper selective coordination.<\/li>\n                <li><strong>Application Note:<\/strong> Designed specifically as a backup fuse for transformer protection; it does not replace full-range protection devices.<\/li>\n                <li><strong>Project Confirmation:<\/strong> Final selection requires validation of specific project short-circuit levels, system voltage, and local environmental conditions.<\/li>\n                <li><strong>Commercial Note:<\/strong> Final supply specifications, dimensions, and ratings are subject to approved manufacturing drawings and official quotations.<\/li>\n            <\/ul>\n        <\/div>\n\n    <\/div>\n<\/section>\n<!-- SEC4 MODULE END -->\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-stackable-columns alignfull stk-block-columns stk-block stk-aa37eab\" data-block-id=\"aa37eab\"><div class=\"stk-row stk-inner-blocks stk-block-content stk-content-align stk-aa37eab-column alignfull\">\n<div class=\"wp-block-stackable-column stk-block-column stk-column stk-block stk-10024bf\" data-v=\"4\" data-block-id=\"10024bf\"><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-10024bf-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-10024bf-inner-blocks\">\n<style>\n    \/* --- CSS VARIABLES (SEC5 Specific) --- *\/\n    .sec5-wrapper {\n        \/* Dark Industrial Theme Colors *\/\n        --sec5-bg-start: #102136;\n        --sec5-bg-end: #0d1b2a;\n        --sec5-text-main: #ffffff;\n        --sec5-text-sub: #d1d5db;\n        --sec5-accent: var(--theme-palette-color-2, #78d3ca);\n        --sec5-accent-hover: #5ebfb5;\n        \n        \/* Glassmorphism Variables *\/\n        --sec5-card-bg: rgba(255, 255, 255, 0.05);\n        --sec5-card-border: rgba(255, 255, 255, 0.12);\n        --sec5-card-hover-bg: rgba(255, 255, 255, 0.08);\n\n        \/* Layout *\/\n        --sec5-padding-desktop: 104px 24px;\n        --sec5-padding-mobile: 72px 16px;\n        --sec5-radius: 16px;\n        \n        font-family: 'Inter', ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, \"Segoe UI\", Roboto, Helvetica, Arial, sans-serif;\n        box-sizing: border-box;\n        width: 100%;\n        background: linear-gradient(135deg, var(--sec5-bg-start) 0%, var(--sec5-bg-end) 100%);\n        color: var(--sec5-text-sub);\n        line-height: 1.6;\n        padding: var(--sec5-padding-desktop);\n        position: relative;\n        overflow: hidden;\n    }\n\n    .sec5-wrapper * {\n        box-sizing: border-box;\n    }\n\n    \/* Optional Subtle Grid\/Noise Texture Overlay *\/\n    .sec5-wrapper::before {\n        content: '';\n        position: absolute;\n        top: 0; left: 0; right: 0; bottom: 0;\n        background-image: radial-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px);\n        background-size: 24px 24px;\n        pointer-events: none;\n    }\n\n    .sec5-container {\n        max-width: 1240px;\n        margin: 0 auto;\n        position: relative;\n        z-index: 2;\n    }\n\n    \/* --- LAYOUT GRID --- *\/\n    .sec5-grid {\n        display: grid;\n        grid-template-columns: 5fr 7fr;\n        gap: 64px;\n        align-items: center;\n    }\n\n    \/* --- LEFT: CONTENT & CTA --- *\/\n    .sec5-content-col {\n        display: flex;\n        flex-direction: column;\n        align-items: flex-start;\n    }\n\n    .sec5-eyebrow {\n        display: inline-block;\n        font-size: 14px;\n        font-weight: 700;\n        text-transform: uppercase;\n        letter-spacing: 0.05em;\n        color: var(--sec5-accent);\n        margin-bottom: 16px;\n    }\n\n    .sec5-h2 {\n        font-size: 38px;\n        font-weight: 800;\n        color: var(--sec5-text-main);\n        margin: 0 0 20px 0;\n        line-height: 1.25;\n    }\n\n    .sec5-desc {\n        font-size: 18px;\n        color: var(--sec5-text-sub);\n        margin: 0 0 40px 0;\n        max-width: 540px;\n    }\n\n    .sec5-cta {\n        display: inline-flex;\n        align-items: center;\n        justify-content: center;\n        background-color: var(--sec5-accent);\n        color: #102136; \/* Dark text on bright button for contrast *\/\n        font-size: 16px;\n        font-weight: 700;\n        padding: 16px 32px;\n        border-radius: 8px;\n        text-decoration: none;\n        transition: transform 0.2s ease, background-color 0.2s ease, box-shadow 0.2s ease;\n        box-shadow: 0 4px 12px rgba(120, 211, 202, 0.2);\n    }\n\n    .sec5-cta:hover, .sec5-cta:focus-visible {\n        background-color: var(--sec5-accent-hover);\n        transform: translateY(-2px);\n        box-shadow: 0 6px 16px rgba(120, 211, 202, 0.3);\n        outline: none;\n    }\n\n    \/* --- RIGHT: CAPABILITY CARDS --- *\/\n    .sec5-cards-col {\n        display: flex;\n        flex-direction: column;\n        gap: 16px;\n    }\n\n    .sec5-card {\n        background-color: var(--sec5-card-bg);\n        border: 1px solid var(--sec5-card-border);\n        border-radius: var(--sec5-radius);\n        padding: 24px;\n        display: flex;\n        align-items: flex-start;\n        gap: 20px;\n        backdrop-filter: blur(8px);\n        -webkit-backdrop-filter: blur(8px);\n        transition: background-color 0.3s ease, transform 0.3s ease;\n    }\n\n    .sec5-card:hover {\n        background-color: var(--sec5-card-hover-bg);\n        transform: translateX(4px);\n    }\n\n    .sec5-card-icon {\n        flex-shrink: 0;\n        width: 48px;\n        height: 48px;\n        display: flex;\n        align-items: center;\n        justify-content: center;\n        background-color: rgba(120, 211, 202, 0.1);\n        border-radius: 12px;\n        color: var(--sec5-accent);\n    }\n\n    .sec5-card-icon svg {\n        width: 24px;\n        height: 24px;\n        stroke: currentColor;\n        stroke-width: 2;\n        fill: none;\n        stroke-linecap: round;\n        stroke-linejoin: round;\n    }\n\n    .sec5-card-text {\n        display: flex;\n        flex-direction: column;\n    }\n\n    .sec5-card-title {\n        font-size: 18px;\n        font-weight: 700;\n        color: var(--sec5-text-main);\n        margin: 0 0 8px 0;\n    }\n\n    .sec5-card-desc {\n        font-size: 15px;\n        color: var(--sec5-text-sub);\n        margin: 0;\n        line-height: 1.5;\n    }\n\n    \/* --- RESPONSIVE --- *\/\n    @media (max-width:999px) {\n        .sec5-grid {\n            grid-template-columns: 1fr;\n            gap: 48px;\n        }\n        \n        .sec5-content-col {\n            max-width: 680px;\n        }\n\n        .sec5-h2 {\n            font-size: 32px;\n        }\n\n        .sec5-card:hover {\n            transform: none; \/* Disable X translation on touch devices *\/\n        }\n    }\n\n    @media (max-width:689px) {\n        .sec5-wrapper {\n            padding: var(--sec5-padding-mobile);\n        }\n\n        .sec5-h2 {\n            font-size: 28px;\n        }\n\n        .sec5-desc {\n            font-size: 16px;\n            margin-bottom: 32px;\n        }\n\n        .sec5-cta {\n            width: 100%; \/* Full width button on mobile *\/\n            padding: 16px 20px;\n            height: 52px;\n        }\n\n        .sec5-card {\n            padding: 20px;\n            gap: 16px;\n        }\n\n        .sec5-card-icon {\n            width: 40px;\n            height: 40px;\n        }\n\n        .sec5-card-icon svg {\n            width: 20px;\n            height: 20px;\n        }\n\n        .sec5-card-title {\n            font-size: 16px;\n        }\n\n        .sec5-card-desc {\n            font-size: 14px;\n        }\n    }\n<\/style>\n\n<!-- SEC5 MODULE START -->\n<section id=\"sec5-capability\" class=\"sec5-wrapper\">\n    <div class=\"sec5-container\">\n        <div class=\"sec5-grid\">\n            \n            <!-- LEFT: Content & CTA -->\n            <div class=\"sec5-content-col\">\n                <span class=\"sec5-eyebrow\">Engineering Delivery Capability<\/span>\n                <h2 class=\"sec5-h2\">Reliable Engineering Support for Current-Limiting Fuse Projects<\/h2>\n                <p class=\"sec5-desc\">\n                    We support current-limiting fuse projects with structured technical review, coordination-oriented recommendations, and export-ready documentation. Our process is designed to ensure your transformer backup protection schemes are executed reliably, reducing uncertainty from initial RFQ to final shipment.\n                <\/p>\n                <a href=\"#ct-popup-862\" class=\"sec5-cta\">Request Technical &#038; Commercial Proposal<\/a>\n            <\/div>\n\n            <!-- RIGHT: Capability Cards -->\n            <div class=\"sec5-cards-col\">\n                \n                <!-- Card 1 -->\n                <div class=\"sec5-card\">\n                    <div class=\"sec5-card-icon\" aria-hidden=\"true\">\n                        <!-- Icon: Coordination\/Network -->\n                        <svg viewBox=\"0 0 24 24\">\n                            <path d=\"M18 6L6 18M6 6l12 12\"><\/path>\n                            <circle cx=\"6\" cy=\"6\" r=\"3\" fill=\"currentColor\"><\/circle>\n                            <circle cx=\"18\" cy=\"18\" r=\"3\" fill=\"currentColor\"><\/circle>\n                            <circle cx=\"6\" cy=\"18\" r=\"3\" fill=\"currentColor\"><\/circle>\n                            <circle cx=\"18\" cy=\"6\" r=\"3\" fill=\"currentColor\"><\/circle>\n                        <\/svg>\n                    <\/div>\n                    <div class=\"sec5-card-text\">\n                        <h3 class=\"sec5-card-title\">Coordination-Oriented Technical Support<\/h3>\n                        <p class=\"sec5-card-desc\">Assist with protection coordination context and curve analysis for complex transformer backup schemes.<\/p>\n                    <\/div>\n                <\/div>\n\n                <!-- Card 2 -->\n                <div class=\"sec5-card\">\n                    <div class=\"sec5-card-icon\" aria-hidden=\"true\">\n                        <!-- Icon: Documentation -->\n                        <svg viewBox=\"0 0 24 24\">\n                            <path d=\"M14 2H6a2 2 0 0 0-2 2v16a2 2 0 0 0 2 2h12a2 2 0 0 0 2-2V8z\"><\/path>\n                            <polyline points=\"14 2 14 8 20 8\"><\/polyline>\n                            <line x1=\"16\" y1=\"13\" x2=\"8\" y2=\"13\"><\/line>\n                            <line x1=\"16\" y1=\"17\" x2=\"8\" y2=\"17\"><\/line>\n                            <polyline points=\"10 9 9 9 8 9\"><\/polyline>\n                        <\/svg>\n                    <\/div>\n                    <div class=\"sec5-card-text\">\n                        <h3 class=\"sec5-card-title\">Project Documentation Readiness<\/h3>\n                        <p class=\"sec5-card-desc\">Datasheet mapping, exact model confirmation, and comprehensive commercial\/packing document alignment.<\/p>\n                    <\/div>\n                <\/div>\n\n                <!-- Card 3 -->\n                <div class=\"sec5-card\">\n                    <div class=\"sec5-card-icon\" aria-hidden=\"true\">\n                        <!-- Icon: Workflow\/Export Efficiency -->\n                        <svg viewBox=\"0 0 24 24\">\n                            <circle cx=\"12\" cy=\"12\" r=\"10\"><\/circle>\n                            <polyline points=\"12 6 12 12 16 14\"><\/polyline>\n                        <\/svg>\n                    <\/div>\n                    <div class=\"sec5-card-text\">\n                        <h3 class=\"sec5-card-title\">Export Workflow Efficiency<\/h3>\n                        <p class=\"sec5-card-desc\">Fast response loops for technical clarifications and seamless order execution handoff for global delivery.<\/p>\n                    <\/div>\n                <\/div>\n\n            <\/div>\n            \n        <\/div>\n    <\/div>\n<\/section>\n<!-- SEC5 MODULE END -->\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-stackable-columns alignfull stk-block-columns stk-block stk-78864d9\" data-block-id=\"78864d9\"><div class=\"stk-row stk-inner-blocks stk-block-content stk-content-align stk-78864d9-column alignfull\">\n<div class=\"wp-block-stackable-column stk-block-column stk-column stk-block stk-553708a\" data-v=\"4\" data-block-id=\"553708a\"><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-553708a-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-553708a-inner-blocks\">\n<style>\n    \/* --- CSS VARIABLES (SEC6 Specific) --- *\/\n    .sec6-wrapper {\n        \/* Colors *\/\n        --sec6-bg-section: #f8fafc; \/* \u6781\u6d45\u7070\u80cc\u666f\uff0c\u4e0e\u4e0a\u4e0b\u6587\u5f62\u6210\u533a\u9694 *\/\n        --sec6-bg-card: #ffffff;\n        --sec6-text-dark: #0f172a;\n        --sec6-text-body: #334155;\n        --sec6-text-muted: #64748b;\n        --sec6-border: #e2e8f0;\n        --sec6-border-hover: #bde8e4;\n        --sec6-accent: var(--theme-palette-color-2, #78d3ca);\n        --sec6-accent-soft: rgba(120, 211, 202, 0.1);\n\n        \/* Layout & Spacing *\/\n        --sec6-padding-desktop: 96px 24px;\n        --sec6-padding-mobile: 72px 16px;\n        --sec6-radius-card: 14px;\n        --sec6-radius-box: 8px;\n        \n        font-family: 'Inter', ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, \"Segoe UI\", Roboto, Helvetica, Arial, sans-serif;\n        color: var(--sec6-text-body);\n        line-height: 1.6;\n        box-sizing: border-box;\n        padding: var(--sec6-padding-desktop);\n        background-color: var(--sec6-bg-section);\n        width: 100%;\n        scroll-margin-top: 120px;\n    }\n\n    .sec6-wrapper * {\n        box-sizing: border-box;\n    }\n\n    .sec6-container {\n        max-width: 1240px;\n        margin: 0 auto;\n    }\n\n    \/* --- 1. 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Header -->\n        <div class=\"sec6-header\">\n            <span class=\"sec6-eyebrow\">Application Scenarios<\/span>\n            <h2 class=\"sec6-h2\">Where Current-Limiting Backup Fuses Are Commonly Applied<\/h2>\n            <p class=\"sec6-intro\">\n                These profiles represent typical installation environments for the backup fuse. In all scenarios, final selection must be confirmed based on specific system voltage, short-circuit levels, and required coordination relationships.\n            <\/p>\n        <\/div>\n\n        <!-- 2. Scenario Cards Grid -->\n        <div class=\"sec6-grid\">\n            \n            <!-- Card 1 -->\n            <div id=\"sec6-transformer-backup\" class=\"sec6-card\">\n                <h3 class=\"sec6-h3\">Oil-Filled Distribution Transformer Protection<\/h3>\n                <p class=\"sec6-card-desc\">\n                    Acting as a critical secondary defense, the current-limiting fuse handles the high fault current spectrum, working collaboratively with low-current protection devices (such as a Bay-O-Net assembly) to form a complete protection scheme.\n                <\/p>\n                <ul class=\"sec6-card-bullets\">\n                    <li>Forms a clear, two-part coordinated defense division<\/li>\n                    <li>Limits destructive energy during major internal faults<\/li>\n                <\/ul>\n                <div class=\"sec6-card-check\">\n                    <span class=\"sec6-check-label\">Key check:<\/span>\n                    <span class=\"sec6-check-value\">Fault level and protection coordination window<\/span>\n                <\/div>\n            <\/div>\n\n            <!-- Card 2 -->\n            <div id=\"sec6-compact-substation\" class=\"sec6-card\">\n                <h3 class=\"sec6-h3\">Compact Substation \/ RMU Schemes<\/h3>\n                <p class=\"sec6-card-desc\">\n                    Space-constrained environments like ring main units (RMU) or compact pad-mounted substations require protective devices that offer stable physical structures and well-defined responses to mitigate medium-voltage side short-circuit risks.\n                <\/p>\n                <ul class=\"sec6-card-bullets\">\n                    <li>Cylindrical cartridge design fits within tight enclosures<\/li>\n                    <li>Rapidly clears faults to prevent catastrophic casing damage<\/li>\n                <\/ul>\n                <div class=\"sec6-card-check\">\n                    <span class=\"sec6-check-label\">Key check:<\/span>\n                    <span class=\"sec6-check-value\">Installation constraints and insulation clearance<\/span>\n                <\/div>\n            <\/div>\n\n            <!-- Card 3 -->\n            <div id=\"sec6-retrofit\" class=\"sec6-card\">\n                <h3 class=\"sec6-h3\">Retrofit Projects with Elevated Fault Levels<\/h3>\n                <p class=\"sec6-card-desc\">\n                    As grid capacities increase, legacy protection strategies may become insufficient. Integrating a current-limiting backup fuse offers a viable, non-disruptive upgrade path to handle newly increased fault duties.\n                <\/p>\n                <ul class=\"sec6-card-bullets\">\n                    <li>Upgrades system interruption capability cost-effectively<\/li>\n                    <li>Complements existing primary protection devices<\/li>\n                <\/ul>\n                <div class=\"sec6-card-check\">\n                    <span class=\"sec6-check-label\">Key check:<\/span>\n                    <span class=\"sec6-check-value\">Updated short-circuit study and legacy compatibility<\/span>\n                <\/div>\n            <\/div>\n\n            <!-- Card 4 -->\n            <div id=\"sec6-high-fault-level\" class=\"sec6-card\">\n                <h3 class=\"sec6-h3\">Industrial \/ Utility Feeder Backup<\/h3>\n                <p class=\"sec6-card-desc\">\n                    Positioned within multi-stage industrial or utility protection networks, these fuses fulfill a backup current-limiting role, significantly reducing the risk of catastrophic fault energy reaching the transformer core.\n                <\/p>\n                <ul class=\"sec6-card-bullets\">\n                    <li>Suppresses massive let-through thermal energy<\/li>\n                    <li>Enhances overall distribution network selectivity<\/li>\n                <\/ul>\n                <div class=\"sec6-card-check\">\n                    <span class=\"sec6-check-label\">Key check:<\/span>\n                    <span class=\"sec6-check-value\">Upstream\/downstream selectivity validation<\/span>\n                <\/div>\n            <\/div>\n\n        <\/div>\n\n        <!-- 3. Boundary & Suitability Note -->\n        <div class=\"sec6-boundary-note\">\n            <h4>Application Boundary Reminder<\/h4>\n            <ul class=\"sec6-boundary-list\">\n                <li>A current-limiting backup fuse is not a full-range protection device; it must be paired with an appropriate low-current clearing device.<\/li>\n                <li>Proper application requires rigorous engineering validation against expected short-circuit currents and time-current coordination curves.<\/li>\n                <li>Final equipment configurations are always subject to project-specific technical specifications and approved manufacturing documentation.<\/li>\n            <\/ul>\n        <\/div>\n\n    <\/div>\n<\/section>\n<!-- SEC6 MODULE END -->\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-stackable-columns alignfull stk-block-columns stk-block stk-c16a1e5\" data-block-id=\"c16a1e5\"><div class=\"stk-row stk-inner-blocks stk-block-content stk-content-align stk-c16a1e5-column alignfull\">\n<div class=\"wp-block-stackable-column stk-block-column stk-column stk-block stk-3c21940\" data-v=\"4\" data-block-id=\"3c21940\"><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-3c21940-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-3c21940-inner-blocks\">\n<style>\n    \/* --- CSS VARIABLES (SEC7 Specific) --- *\/\n    .sec7-wrapper {\n        \/* Colors *\/\n        --sec7-bg-section: #ffffff; \/* \u4e3b\u80cc\u666f\u6539\u56de\u7eaf\u767d\uff0c\u8ba9\u6392\u7248\u66f4\u5e72\u51c0 *\/\n        --sec7-bg-sidebar: #f8fafc; \/* \u4fa7\u8fb9\u680f\u4f7f\u7528\u6d45\u7070\u4f5c\u4e3a\u533a\u9694 *\/\n        --sec7-text-dark: #0f172a;\n        --sec7-text-body: #334155;\n        --sec7-text-muted: #64748b;\n        --sec7-border: #e2e8f0;\n        --sec7-accent: var(--theme-palette-color-2, #78d3ca);\n        --sec7-accent-dark: #0d9488;\n        --sec7-error-soft: #fee2e2;\n        --sec7-error-text: #ef4444;\n\n        \/* Layout & Spacing *\/\n        --sec7-padding-desktop: 104px 24px;\n        --sec7-padding-mobile: 72px 16px;\n        --sec7-radius: 16px;\n        \n        font-family: 'Inter', ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, \"Segoe UI\", Roboto, Helvetica, Arial, sans-serif;\n        color: var(--sec7-text-body);\n        line-height: 1.6;\n        box-sizing: border-box;\n        padding: var(--sec7-padding-desktop);\n        background-color: var(--sec7-bg-section);\n        width: 100%;\n        scroll-margin-top: 120px;\n    }\n\n    .sec7-wrapper * {\n        box-sizing: border-box;\n    }\n\n    .sec7-container {\n        max-width: 1240px;\n        margin: 0 auto;\n    }\n\n    \/* --- 1. HEADER AREA --- *\/\n    .sec7-header {\n        max-width: 860px;\n        margin-bottom: 56px;\n        text-align: left;\n    }\n\n    .sec7-eyebrow {\n        display: inline-block;\n        font-size: 14px;\n        font-weight: 700;\n        text-transform: uppercase;\n        letter-spacing: 0.05em;\n        color: var(--sec7-accent-dark);\n        margin-bottom: 16px;\n    }\n\n    .sec7-h2 {\n        font-size: 38px;\n        font-weight: 800;\n        color: var(--sec7-text-dark);\n        margin: 0 0 20px 0;\n        line-height: 1.25;\n    }\n\n    .sec7-intro {\n        font-size: 18px;\n        color: var(--sec7-text-muted);\n        margin: 0;\n        max-width: 760px;\n    }\n\n    \/* --- 2. MAIN GRID LAYOUT --- *\/\n    .sec7-grid {\n        display: grid;\n        grid-template-columns: 1fr 380px; \/* \u5de6\u4fa7\u81ea\u9002\u5e94\uff0c\u53f3\u4fa7\u56fa\u5b9a\u5bbd\u5ea6 380px *\/\n        gap: 80px;\n        align-items: start;\n        margin-bottom: 64px;\n    }\n\n    \/* --- 3. LEFT COL: TIMELINE (No Cards) --- *\/\n    .sec7-timeline {\n        position: relative;\n        padding-left: 20px; \/* \u4e3a\u65f6\u95f4\u7ebf\u7559\u51fa\u7a7a\u95f4 *\/\n    }\n\n    \/* \u8d2f\u7a7f\u7684\u5782\u76f4\u57fa\u51c6\u7ebf *\/\n    .sec7-timeline::before {\n        content: '';\n        position: absolute;\n        top: 8px;\n        bottom: 0;\n        left: 23px; \/* \u7ebf\u6761\u5c45\u4e2d\u5bf9\u9f50\u8282\u70b9 *\/\n        width: 2px;\n        background-color: var(--sec7-border);\n        z-index: 1;\n    }\n\n    .sec7-step {\n        position: relative;\n        padding-left: 48px;\n        padding-bottom: 56px;\n    }\n\n    .sec7-step:last-child {\n        padding-bottom: 0;\n    }\n\n    \/* \u63a9\u76d6\u6700\u540e\u4e00\u6839\u591a\u4f59\u7684\u57fa\u51c6\u7ebf *\/\n    .sec7-step:last-child::after {\n        content: '';\n        position: absolute;\n        top: 40px;\n        bottom: -10px;\n        left: -10px;\n        width: 20px;\n        background-color: var(--sec7-bg-section);\n        z-index: 2;\n    }\n\n    \/* \u6b65\u9aa4\u5706\u70b9\u8282\u70b9 *\/\n    .sec7-step-indicator {\n        position: absolute;\n        left: -15px; \/* \u5bf9\u9f50\u5782\u76f4\u7ebf *\/\n        top: 0;\n        width: 36px;\n        height: 36px;\n        background-color: var(--sec7-text-dark); \/* \u6df1\u8272\u8282\u70b9\u5e26\u6765\u6c89\u7a33\u611f *\/\n        color: #ffffff;\n        border-radius: 50%;\n        display: flex;\n        align-items: center;\n        justify-content: center;\n        font-size: 14px;\n        font-weight: 700;\n        z-index: 3;\n        box-shadow: 0 0 0 6px var(--sec7-bg-section); \/* \u7528\u80cc\u666f\u8272\u5207\u51fa\u547c\u5438\u533a *\/\n        transition: background-color 0.3s ease;\n    }\n\n    .sec7-step:hover .sec7-step-indicator {\n        background-color: var(--sec7-accent-dark);\n    }\n\n    .sec7-h3 {\n        font-size: 22px;\n        font-weight: 700;\n        color: var(--sec7-text-dark);\n        margin: 4px 0 16px 0;\n        line-height: 1.3;\n    }\n\n    .sec7-step-content {\n        display: flex;\n        flex-direction: column;\n        gap: 16px;\n    }\n\n    .sec7-block-title {\n        font-size: 14px;\n        font-weight: 700;\n        text-transform: uppercase;\n        letter-spacing: 0.05em;\n        color: var(--sec7-text-muted);\n        margin: 8px 0 0 0;\n    }\n\n    .sec7-step p {\n        font-size: 16px;\n        color: var(--sec7-text-body);\n        margin: 0;\n    }\n\n    .sec7-step ul {\n        list-style: none;\n        padding: 0;\n        margin: 0;\n        display: flex;\n        flex-direction: column;\n        gap: 8px;\n    }\n\n    .sec7-step ul li {\n        font-size: 15px;\n        color: var(--sec7-text-body);\n        position: relative;\n        padding-left: 20px;\n    }\n\n    .sec7-step ul li::before {\n        content: \"\u2022\";\n        position: absolute;\n        left: 0;\n        top: 0;\n        color: var(--sec7-accent-dark);\n        font-weight: 800;\n        font-size: 18px;\n        line-height: 1.4;\n    }\n\n    .sec7-output-box {\n        margin-top: 8px;\n        padding-left: 16px;\n        border-left: 3px solid var(--sec7-accent);\n        font-size: 15px;\n        font-weight: 600;\n        color: var(--sec7-text-dark);\n        display: flex;\n        align-items: center;\n        gap: 8px;\n    }\n\n    .sec7-link {\n        color: var(--sec7-accent-dark);\n        text-decoration: underline;\n        text-underline-offset: 4px;\n        font-weight: 600;\n    }\n\n    .sec7-link:hover {\n        color: var(--sec7-accent);\n    }\n\n    \/* --- 4. RIGHT COL: SINGLE SIDEBAR PANEL --- *\/\n    .sec7-sidebar-pane {\n        background-color: var(--sec7-bg-sidebar);\n        border: 1px solid var(--sec7-border);\n        border-radius: var(--sec7-radius);\n        padding: 32px;\n        position: sticky;\n        top: 120px; \/* Offset for global header *\/\n        display: flex;\n        flex-direction: column;\n        gap: 32px;\n    }\n\n    .sec7-sidebar-title {\n        font-size: 16px;\n        font-weight: 800;\n        color: var(--sec7-text-dark);\n        text-transform: uppercase;\n        letter-spacing: 0.05em;\n        margin: 0 0 20px 0;\n        display: flex;\n        align-items: center;\n        gap: 10px;\n    }\n\n    \/* Checklist Styles *\/\n    .sec7-checklist ul {\n        list-style: none;\n        padding: 0;\n        margin: 0;\n        display: flex;\n        flex-direction: column;\n        gap: 14px;\n    }\n\n    .sec7-checklist li {\n        display: flex;\n        align-items: flex-start;\n        gap: 12px;\n        font-size: 14px;\n        color: var(--sec7-text-body);\n        font-weight: 500;\n    }\n\n    .sec7-check-icon {\n        flex-shrink: 0;\n        width: 18px;\n        height: 18px;\n        color: var(--sec7-accent-dark);\n        display: flex;\n        align-items: center;\n        justify-content: center;\n        margin-top: 2px;\n    }\n\n    .sec7-check-icon svg {\n        width: 16px;\n        height: 16px;\n        fill: none;\n        stroke: currentColor;\n        stroke-width: 2.5;\n        stroke-linecap: round;\n        stroke-linejoin: round;\n    }\n\n    \/* Divider *\/\n    .sec7-sidebar-divider {\n        height: 1px;\n        background-color: var(--sec7-border);\n        width: 100%;\n        margin: 0;\n        border: none;\n    }\n\n    \/* Mistakes Styles *\/\n    .sec7-mistakes ul {\n        list-style: none;\n        padding: 0;\n        margin: 0;\n        display: flex;\n        flex-direction: column;\n        gap: 14px;\n    }\n\n    .sec7-mistakes li {\n        display: flex;\n        align-items: flex-start;\n        gap: 12px;\n        font-size: 14px;\n        color: var(--sec7-text-body);\n    }\n\n    .sec7-cross-icon {\n        flex-shrink: 0;\n        width: 18px;\n        height: 18px;\n        color: var(--sec7-error-text);\n        display: flex;\n        align-items: center;\n        justify-content: center;\n        margin-top: 2px;\n    }\n\n    .sec7-cross-icon svg {\n        width: 16px;\n        height: 16px;\n        fill: none;\n        stroke: currentColor;\n        stroke-width: 2.5;\n        stroke-linecap: round;\n        stroke-linejoin: round;\n    }\n\n    \/* --- 5. BOTTOM REMINDER (Clean Text) --- *\/\n    .sec7-reminder-text {\n        text-align: center;\n        font-size: 15px;\n        color: var(--sec7-text-muted);\n        max-width: 800px;\n        margin: 0 auto;\n        padding-top: 32px;\n        border-top: 1px solid var(--sec7-border);\n        font-style: italic;\n    }\n\n    \/* --- RESPONSIVE --- *\/\n    @media (max-width:1000px) {\n        .sec7-grid {\n            grid-template-columns: 1fr 320px; \/* Tablet: Narrower sidebar *\/\n            gap: 40px;\n        }\n    }\n\n    @media (max-width:690px) {\n        .sec7-wrapper {\n            padding: var(--sec7-padding-mobile);\n        }\n\n        .sec7-h2 {\n            font-size: 30px;\n        }\n\n        .sec7-intro {\n            font-size: 16px;\n        }\n\n        .sec7-grid {\n            grid-template-columns: 1fr; \/* Single column on mobile *\/\n            gap: 48px;\n            margin-bottom: 48px;\n        }\n\n        .sec7-sidebar-pane {\n            position: relative;\n            top: 0; \/* Disable sticky on mobile *\/\n            padding: 24px;\n        }\n\n        .sec7-timeline::before {\n            left: 15px; \/* Adjust line position for mobile if needed *\/\n        }\n        \n        .sec7-step-indicator {\n            left: -3px; \/* Adjust dot position for mobile *\/\n            width: 32px;\n            height: 32px;\n            font-size: 13px;\n        }\n\n        .sec7-step {\n            padding-left: 40px;\n            padding-bottom: 40px;\n        }\n    }\n<\/style>\n\n<!-- SEC7 MODULE START -->\n<section id=\"sec7-selection-guide\" class=\"sec7-wrapper\">\n    <div class=\"sec7-container\">\n\n        <!-- 1. Header -->\n        <div class=\"sec7-header\">\n            <span class=\"sec7-eyebrow\">Selection Method<\/span>\n            <h2 class=\"sec7-h2\">How to Select the Right Current-Limiting Fuse for Transformer Protection<\/h2>\n            <p class=\"sec7-intro\">\n                This guide provides a structured methodology for preliminary fuse selection. Final engineering configurations must be rigorously verified against specific system short-circuit studies and coordination criteria.\n            <\/p>\n        <\/div>\n\n        <!-- 2. Main Grid Layout -->\n        <div class=\"sec7-grid\">\n\n            <!-- Left Col: Timeline Layout (No Cards) -->\n            <div class=\"sec7-timeline\">\n                \n                <!-- Step 1 -->\n                <div class=\"sec7-step\">\n                    <div class=\"sec7-step-indicator\">01<\/div>\n                    <div class=\"sec7-step-content\">\n                        <h3 class=\"sec7-h3\">Confirm System Voltage Class<\/h3>\n                        \n                        <div class=\"sec7-block-title\">Why it matters<\/div>\n                        <p>Identifying the nominal and maximum system voltage locks in the correct insulation and dielectric clearance class. Typically, options fall into the (8.3)15.5kV, 25kV, or (38)40.5kV categories. Otherwise, subsequent parameters will be misaligned.<\/p>\n                        \n                        <div class=\"sec7-block-title\">What to collect<\/div>\n                        <ul>\n                            <li>System nominal voltage and maximum continuous operating voltage<\/li>\n                            <li>Insulation level \/ project voltage constraints<\/li>\n                            <li>Applicable network segment requirements<\/li>\n                        <\/ul>\n                        \n                        <div class=\"sec7-output-box\">\n                            <span style=\"color:var(--sec7-accent-dark)\">Output:<\/span> Preliminary voltage class shortlist (<a href=\"#sec-specifications\" class=\"sec7-link\">See Specs<\/a>)\n                        <\/div>\n                    <\/div>\n                <\/div>\n\n                <!-- Step 2 -->\n                <div class=\"sec7-step\">\n                    <div class=\"sec7-step-indicator\">02<\/div>\n                    <div class=\"sec7-step-content\">\n                        <h3 class=\"sec7-h3\">Define Required Rated Current Range<\/h3>\n                        \n                        <div class=\"sec7-block-title\">Why it matters<\/div>\n                        <p>The rated current envelope determines the specific model variant. Undersizing leads to nuisance tripping under normal overload conditions, while oversizing compromises the backup protection sensitivity.<\/p>\n                        \n                        <div class=\"sec7-block-title\">What to collect<\/div>\n                        <ul>\n                            <li>Transformer kVA rating and full-load current<\/li>\n                            <li>Expected maximum operating current envelope (including inrush)<\/li>\n                            <li>Utility or local loading profile \/ margin policy<\/li>\n                        <\/ul>\n                        \n                        <div class=\"sec7-output-box\">\n                            <span style=\"color:var(--sec7-accent-dark)\">Output:<\/span> Candidate rated current band\n                        <\/div>\n                    <\/div>\n                <\/div>\n\n                <!-- Step 3 -->\n                <div class=\"sec7-step\">\n                    <div class=\"sec7-step-indicator\">03<\/div>\n                    <div class=\"sec7-step-content\">\n                        <h3 class=\"sec7-h3\">Verify Fault Level &#038; Breaking Capacity<\/h3>\n                        \n                        <div class=\"sec7-block-title\">Why it matters<\/div>\n                        <p>The breaking capacity of the fuse must safely exceed the maximum prospective short-circuit current of the project site to prevent catastrophic equipment failure during major fault events.<\/p>\n                        \n                        <div class=\"sec7-block-title\">What to collect<\/div>\n                        <ul>\n                            <li>Prospective three-phase short-circuit current at the installation node<\/li>\n                            <li>Network update status (retrofit vs. new build considerations)<\/li>\n                            <li>Class-dependent breaking requirement (e.g., up to 50kA)<\/li>\n                        <\/ul>\n                        \n                        <div class=\"sec7-output-box\">\n                            <span style=\"color:var(--sec7-accent-dark)\">Output:<\/span> Breaking-capacity compliance check (Pass\/Fail)\n                        <\/div>\n                    <\/div>\n                <\/div>\n\n                <!-- Step 4 -->\n                <div class=\"sec7-step\">\n                    <div class=\"sec7-step-indicator\">04<\/div>\n                    <div class=\"sec7-step-content\">\n                        <h3 class=\"sec7-h3\">Check Protection Coordination<\/h3>\n                        \n                        <div class=\"sec7-block-title\">Why it matters<\/div>\n                        <p>A current-limiting backup fuse rarely operates alone. It is usually paired with low-current clearing devices like a Bay-O-Net assembly. Ensuring their time-current curves don&#8217;t cross improperly guarantees correct protective selectivity.<\/p>\n                        \n                        <div class=\"sec7-block-title\">What to collect<\/div>\n                        <ul>\n                            <li>Upstream and downstream protective device information<\/li>\n                            <li>Required coordination curve (TCC) crossover boundaries<\/li>\n                            <li>Overall operational philosophy (backup vs. selective clearing)<\/li>\n                        <\/ul>\n                        \n                        <div class=\"sec7-output-box\">\n                            <span style=\"color:var(--sec7-accent-dark)\">Output:<\/span> Coordination feasibility note\n                        <\/div>\n                    <\/div>\n                <\/div>\n\n                <!-- Step 5 -->\n                <div class=\"sec7-step\">\n                    <div class=\"sec7-step-indicator\">05<\/div>\n                    <div class=\"sec7-step-content\">\n                        <h3 class=\"sec7-h3\">Validate Mechanical &#038; Installation Constraints<\/h3>\n                        \n                        <div class=\"sec7-block-title\">Why it matters<\/div>\n                        <p>Selecting the correct electrical parameters is useless if the fuse cannot physically fit. Physical dimensions, terminal thread sizes (e.g., M10 vs. M6), and operating ambient environments are the final gatekeepers.<\/p>\n                        \n                        <div class=\"sec7-block-title\">What to collect<\/div>\n                        <ul>\n                            <li>Available mounting space \/ tube diameter restrictions (C dimension)<\/li>\n                            <li>Mechanical interface \/ terminal thread (MA) requirements<\/li>\n                            <li>Ambient and environmental exposure constraints<\/li>\n                        <\/ul>\n                        \n                        <div class=\"sec7-output-box\">\n                            <span style=\"color:var(--sec7-accent-dark)\">Output:<\/span> Final RFQ-ready configuration set\n                        <\/div>\n                    <\/div>\n                <\/div>\n\n            <\/div>\n\n            <!-- Right Col: Single Sidebar Panel -->\n            <div class=\"sec7-sidebar-pane\">\n                \n                <!-- Checklist Section -->\n                <div class=\"sec7-checklist\">\n                    <h4 class=\"sec7-sidebar-title\">\n                        RFQ Readiness Checklist\n                    <\/h4>\n                    <ul>\n                        <li>\n                            <div class=\"sec7-check-icon\"><svg viewBox=\"0 0 24 24\"><polyline points=\"20 6 9 17 4 12\"><\/polyline><\/svg><\/div>\n                            Voltage class confirmed\n                        <\/li>\n                        <li>\n                            <div class=\"sec7-check-icon\"><svg viewBox=\"0 0 24 24\"><polyline points=\"20 6 9 17 4 12\"><\/polyline><\/svg><\/div>\n                            Rated current range selected\n                        <\/li>\n                        <li>\n                            <div class=\"sec7-check-icon\"><svg viewBox=\"0 0 24 24\"><polyline points=\"20 6 9 17 4 12\"><\/polyline><\/svg><\/div>\n                            Breaking capacity checked\n                        <\/li>\n                        <li>\n                            <div class=\"sec7-check-icon\"><svg viewBox=\"0 0 24 24\"><polyline points=\"20 6 9 17 4 12\"><\/polyline><\/svg><\/div>\n                            Coordination path reviewed\n                        <\/li>\n                        <li>\n                            <div class=\"sec7-check-icon\"><svg viewBox=\"0 0 24 24\"><polyline points=\"20 6 9 17 4 12\"><\/polyline><\/svg><\/div>\n                            Mechanical interface verified\n                        <\/li>\n                        <li>\n                            <div class=\"sec7-check-icon\"><svg viewBox=\"0 0 24 24\"><polyline points=\"20 6 9 17 4 12\"><\/polyline><\/svg><\/div>\n                            Installation constraints reviewed\n                        <\/li>\n                        <li>\n                            <div class=\"sec7-check-icon\"><svg viewBox=\"0 0 24 24\"><polyline points=\"20 6 9 17 4 12\"><\/polyline><\/svg><\/div>\n                            Application scenario matched\n                        <\/li>\n                        <li>\n                            <div class=\"sec7-check-icon\"><svg viewBox=\"0 0 24 24\"><polyline points=\"20 6 9 17 4 12\"><\/polyline><\/svg><\/div>\n                            Approval basis documented\n                        <\/li>\n                    <\/ul>\n                <\/div>\n\n                <hr class=\"sec7-sidebar-divider\" \/>\n\n                <!-- Mistakes Section -->\n                <div class=\"sec7-mistakes\">\n                    <h4 class=\"sec7-sidebar-title\" style=\"color: var(--sec7-error-text);\">\n                        Common Mistakes to Avoid\n                    <\/h4>\n                    <ul>\n                        <li>\n                            <div class=\"sec7-cross-icon\"><svg viewBox=\"0 0 24 24\"><line x1=\"18\" y1=\"6\" x2=\"6\" y2=\"18\"><\/line><line x1=\"6\" y1=\"6\" x2=\"18\" y2=\"18\"><\/line><\/svg><\/div>\n                            Selecting by current only without fault-level validation\n                        <\/li>\n                        <li>\n                            <div class=\"sec7-cross-icon\"><svg viewBox=\"0 0 24 24\"><line x1=\"18\" y1=\"6\" x2=\"6\" y2=\"18\"><\/line><line x1=\"6\" y1=\"6\" x2=\"18\" y2=\"18\"><\/line><\/svg><\/div>\n                            Ignoring coordination with companion protection devices\n                        <\/li>\n                        <li>\n                            <div class=\"sec7-cross-icon\"><svg viewBox=\"0 0 24 24\"><line x1=\"18\" y1=\"6\" x2=\"6\" y2=\"18\"><\/line><line x1=\"6\" y1=\"6\" x2=\"18\" y2=\"18\"><\/line><\/svg><\/div>\n                            Assuming one class value applies to all voltage classes\n                        <\/li>\n                        <li>\n                            <div class=\"sec7-cross-icon\"><svg viewBox=\"0 0 24 24\"><line x1=\"18\" y1=\"6\" x2=\"6\" y2=\"18\"><\/line><line x1=\"6\" y1=\"6\" x2=\"18\" y2=\"18\"><\/line><\/svg><\/div>\n                            Missing mechanical tube dimensions \/ thread compatibility checks\n                        <\/li>\n                    <\/ul>\n                <\/div>\n\n            <\/div>\n\n        <\/div>\n\n        <!-- 3. Bottom Reminder (Clean Text, No Box) -->\n        <p class=\"sec7-reminder-text\">\n            * Engineering Validation Reminder: Preliminary selection from this guide should be validated by project-specific short-circuit and coordination analysis before final release.\n        <\/p>\n\n    <\/div>\n<\/section>\n<!-- SEC7 MODULE END -->\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-stackable-columns alignfull stk-block-columns stk-block stk-b05a896\" data-block-id=\"b05a896\"><div class=\"stk-row stk-inner-blocks stk-block-content stk-content-align stk-b05a896-column alignfull\">\n<div class=\"wp-block-stackable-column stk-block-column stk-column stk-block stk-9ba494d\" data-v=\"4\" data-block-id=\"9ba494d\"><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-9ba494d-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-9ba494d-inner-blocks\">\n<style>\n    \/* --- CSS VARIABLES (SEC8 Specific) --- *\/\n    .sec8-wrapper {\n        \/* Colors *\/\n        --sec8-bg-section: #ffffff;\n        --sec8-bg-alt: #f8fafc;\n        --sec8-text-dark: #0f172a;\n        --sec8-text-body: #334155;\n        --sec8-text-muted: #64748b;\n        --sec8-border: #e2e8f0;\n        --sec8-accent: var(--theme-palette-color-2, #78d3ca);\n        --sec8-accent-soft: rgba(120, 211, 202, 0.15);\n        --sec8-accent-dark: #0d9488;\n\n        \/* Layout & Spacing *\/\n        --sec8-padding-desktop: 96px 24px;\n        --sec8-padding-mobile: 72px 16px;\n        --sec8-radius-lg: 16px;\n        --sec8-radius-md: 12px;\n        \n        font-family: 'Inter', ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, \"Segoe UI\", Roboto, Helvetica, Arial, sans-serif;\n        color: var(--sec8-text-body);\n        line-height: 1.6;\n        box-sizing: border-box;\n        padding: var(--sec8-padding-desktop);\n        background-color: var(--sec8-bg-section);\n        width: 100%;\n        scroll-margin-top: 120px;\n    }\n\n    .sec8-wrapper * {\n        box-sizing: border-box;\n    }\n\n    .sec8-container {\n        max-width: 1240px;\n        margin: 0 auto;\n    }\n\n    \/* --- 1. HEADER AREA --- *\/\n    .sec8-header {\n        max-width: 860px;\n        margin-bottom: 48px;\n        text-align: left;\n    }\n\n    .sec8-eyebrow {\n        display: inline-block;\n        font-size: 14px;\n        font-weight: 700;\n        text-transform: uppercase;\n        letter-spacing: 0.05em;\n        color: var(--sec8-accent-dark);\n        margin-bottom: 16px;\n        background-color: var(--sec8-accent-soft);\n        padding: 4px 12px;\n        border-radius: 20px;\n    }\n\n    .sec8-h2 {\n        font-size: 36px;\n        font-weight: 800;\n        color: var(--sec8-text-dark);\n        margin: 0 0 20px 0;\n        line-height: 1.25;\n    }\n\n    .sec8-intro {\n        font-size: 18px;\n        color: var(--sec8-text-muted);\n        margin: 0;\n        max-width: 800px;\n    }\n\n    \/* --- 2. QUALITY CONTROL TIMELINE --- *\/\n    .sec8-qc-section {\n        margin-bottom: 56px;\n    }\n\n    .sec8-qc-title {\n        font-size: 24px;\n        font-weight: 700;\n        color: var(--sec8-text-dark);\n        margin: 0 0 32px 0;\n    }\n\n    .sec8-timeline {\n        display: flex;\n        align-items: flex-start;\n        gap: 24px;\n        position: relative;\n    }\n\n    \/* Horizontal Line for Desktop *\/\n    .sec8-timeline::before {\n        content: '';\n        position: absolute;\n        top: 24px; \/* Align with middle of the step number *\/\n        left: 24px;\n        right: 24px;\n        height: 2px;\n        background-color: var(--sec8-border);\n        z-index: 1;\n    }\n\n    .sec8-step {\n        flex: 1;\n        background-color: var(--sec8-bg-alt);\n        border: 1px solid var(--sec8-border);\n        border-radius: var(--sec8-radius-md);\n        padding: 32px 24px 24px 24px;\n        position: relative;\n        z-index: 2;\n        margin-top: 48px; \/* Push down to make room for absolute number *\/\n        transition: transform 0.2s ease, box-shadow 0.2s ease;\n    }\n\n    .sec8-step:hover {\n        transform: translateY(-4px);\n        box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.05);\n    }\n\n    .sec8-step-num {\n        position: absolute;\n        top: -24px;\n        left: 24px;\n        width: 48px;\n        height: 48px;\n        background-color: var(--sec8-text-dark);\n        color: #ffffff;\n        font-size: 18px;\n        font-weight: 800;\n        display: flex;\n        align-items: center;\n        justify-content: center;\n        border-radius: 50%;\n        border: 6px solid var(--sec8-bg-section); \/* Creates cut-out effect *\/\n        box-sizing: content-box;\n    }\n\n    .sec8-step h3 {\n        font-size: 18px;\n        font-weight: 700;\n        color: var(--sec8-text-dark);\n        margin: 0 0 12px 0;\n    }\n\n    .sec8-step p {\n        font-size: 15px;\n        color: var(--sec8-text-body);\n        margin: 0 0 16px 0;\n        min-height: 48px;\n    }\n\n    .sec8-step-output {\n        font-size: 13px;\n        font-weight: 600;\n        color: var(--sec8-text-muted);\n        background-color: #ffffff;\n        padding: 8px 12px;\n        border-radius: 6px;\n        border: 1px dashed var(--sec8-border);\n        display: inline-flex;\n        align-items: center;\n        gap: 6px;\n    }\n\n    .sec8-step-output span {\n        color: var(--sec8-accent-dark);\n    }\n\n    \/* --- 3. DOCUMENTATION MATRIX --- *\/\n    .sec8-docs-section {\n        margin-bottom: 48px;\n    }\n\n    .sec8-docs-title {\n        font-size: 24px;\n        font-weight: 700;\n        color: var(--sec8-text-dark);\n        margin: 0 0 24px 0;\n    }\n\n    .sec8-docs-grid {\n        display: grid;\n        grid-template-columns: repeat(2, 1fr);\n        gap: 20px;\n    }\n\n    .sec8-doc-card {\n        background-color: var(--sec8-bg-section);\n        border: 1px solid var(--sec8-border);\n        border-radius: var(--sec8-radius-md);\n        padding: 24px;\n        display: flex;\n        align-items: flex-start;\n        gap: 16px;\n        transition: border-color 0.2s ease, box-shadow 0.2s ease;\n    }\n\n    .sec8-doc-card:hover {\n        border-color: var(--sec8-accent);\n        box-shadow: 0 4px 12px -2px rgba(0, 0, 0, 0.05);\n    }\n\n    .sec8-doc-icon {\n        flex-shrink: 0;\n        width: 32px;\n        height: 32px;\n        color: var(--sec8-text-muted);\n        background-color: var(--sec8-bg-alt);\n        display: flex;\n        align-items: center;\n        justify-content: center;\n        border-radius: 8px;\n    }\n\n    .sec8-doc-card:hover .sec8-doc-icon {\n        color: var(--sec8-accent-dark);\n        background-color: var(--sec8-accent-soft);\n    }\n\n    .sec8-doc-icon svg {\n        width: 18px;\n        height: 18px;\n        fill: none;\n        stroke: currentColor;\n        stroke-width: 2;\n        stroke-linecap: round;\n        stroke-linejoin: round;\n    }\n\n    .sec8-doc-content h4 {\n        font-size: 16px;\n        font-weight: 700;\n        color: var(--sec8-text-dark);\n        margin: 0 0 6px 0;\n    }\n\n    .sec8-doc-content p {\n        font-size: 14px;\n        color: var(--sec8-text-muted);\n        margin: 0;\n        line-height: 1.5;\n    }\n\n    \/* --- 4. SCOPE NOTE (BOTTOM REMINDER) --- *\/\n    .sec8-scope-note {\n        background-color: var(--sec8-bg-alt);\n        border-left: 4px solid var(--sec8-border);\n        padding: 20px 24px;\n        border-radius: 0 8px 8px 0;\n    }\n\n    .sec8-scope-note h4 {\n        font-size: 15px;\n        font-weight: 700;\n        color: var(--sec8-text-dark);\n        margin: 0 0 4px 0;\n    }\n\n    .sec8-scope-note p {\n        font-size: 14px;\n        color: var(--sec8-text-muted);\n        margin: 0;\n    }\n\n    \/* --- RESPONSIVE --- *\/\n    @media (max-width:1000px) {\n        .sec8-step p {\n            min-height: auto; \/* Remove forced height on tablet *\/\n        }\n    }\n\n    @media (max-width:690px) {\n        .sec8-wrapper {\n            padding: var(--sec8-padding-mobile);\n        }\n\n        .sec8-h2 {\n            font-size: 28px;\n        }\n\n        .sec8-intro {\n            font-size: 16px;\n        }\n\n        \/* Convert timeline to vertical *\/\n        .sec8-timeline {\n            flex-direction: column;\n            gap: 16px;\n        }\n\n        .sec8-timeline::before {\n            display: none; \/* Hide horizontal line *\/\n        }\n\n        .sec8-step {\n            width: 100%;\n            margin-top: 0;\n            padding: 24px 20px 24px 72px; \/* Make room for number on the left *\/\n        }\n\n        .sec8-step-num {\n            top: 24px;\n            left: -12px;\n            width: 40px;\n            height: 40px;\n            font-size: 16px;\n            border-width: 4px;\n        }\n\n        \/* Convert docs to single column *\/\n        .sec8-docs-grid {\n            grid-template-columns: 1fr;\n            gap: 16px;\n        }\n\n        .sec8-doc-card {\n            padding: 20px;\n        }\n    }\n<\/style>\n\n<!-- SEC8 MODULE START -->\n<section id=\"sec8-quality-docs\" class=\"sec8-wrapper\">\n    <div class=\"sec8-container\">\n\n        <!-- 1. Header -->\n        <div class=\"sec8-header\">\n            <span class=\"sec8-eyebrow\">Delivery Assurance<\/span>\n            <h2 class=\"sec8-h2\">Quality Control and Documentation Support for Current-Limiting Fuse Projects<\/h2>\n            <p class=\"sec8-intro\">\n                For current-limiting backup fuse projects, ZeeyiElec provides structured quality control and comprehensive documentation support. We assist engineering and procurement teams in streamlining technical confirmation, order execution, and customs clearance preparation for your transformer protection project.\n            <\/p>\n        <\/div>\n\n        <!-- 2. Quality Control Timeline -->\n        <div class=\"sec8-qc-section\">\n            <h3 class=\"sec8-qc-title\">Structured Quality Flow<\/h3>\n            <div class=\"sec8-timeline\">\n                \n                <!-- Step 1 -->\n                <div class=\"sec8-step\">\n                    <div class=\"sec8-step-num\">01<\/div>\n                    <h3>Incoming &#038; Material Verification<\/h3>\n                    <p>Critical raw materials and fuse components are verified against engineering specifications to ensure structural and material consistency.<\/p>\n                    <div class=\"sec8-step-output\">\n                        <span>Output:<\/span> Baseline Internal Verification Records\n                    <\/div>\n                <\/div>\n\n                <!-- Step 2 -->\n                <div class=\"sec8-step\">\n                    <div class=\"sec8-step-num\">02<\/div>\n                    <h3>In-Process Control<\/h3>\n                    <p>Assembly parameters, filler compaction, and dimensional consistencies are rigorously monitored throughout key manufacturing stages.<\/p>\n                    <div class=\"sec8-step-output\">\n                        <span>Output:<\/span> Process Conformity Confirmation\n                    <\/div>\n                <\/div>\n\n                <!-- Step 3 -->\n                <div class=\"sec8-step\">\n                    <div class=\"sec8-step-num\">03<\/div>\n                    <h3>Final Inspection Before Shipment<\/h3>\n                    <p>Physical dimensions, product markings, and secure packaging are thoroughly reviewed against final order requirements prior to dispatch.<\/p>\n                    <div class=\"sec8-step-output\">\n                        <span>Output:<\/span> Pre-Shipment Readiness Status\n                    <\/div>\n                <\/div>\n\n            <\/div>\n        <\/div>\n\n        <!-- 3. Documentation Support Matrix -->\n        <div class=\"sec8-docs-section\">\n            <h3 class=\"sec8-docs-title\">Project Documentation Support<\/h3>\n            <div class=\"sec8-docs-grid\">\n                \n                <!-- Card A -->\n                <div class=\"sec8-doc-card\">\n                    <div class=\"sec8-doc-icon\" aria-hidden=\"true\">\n                        <svg viewBox=\"0 0 24 24\"><path d=\"M14 2H6a2 2 0 0 0-2 2v16a2 2 0 0 0 2 2h12a2 2 0 0 0 2-2V8z\"><\/path><polyline points=\"14 2 14 8 20 8\"><\/polyline><line x1=\"16\" y1=\"13\" x2=\"8\" y2=\"13\"><\/line><line x1=\"16\" y1=\"17\" x2=\"8\" y2=\"17\"><\/line><polyline points=\"10 9 9 9 8 9\"><\/polyline><\/svg>\n                    <\/div>\n                    <div class=\"sec8-doc-content\">\n                        <h4>Technical Datasheet<\/h4>\n                        <p>Baseline parameters, TCC curves, and dimensional references for preliminary engineering selection.<\/p>\n                    <\/div>\n                <\/div>\n\n                <!-- Card B -->\n                <div class=\"sec8-doc-card\">\n                    <div class=\"sec8-doc-icon\" aria-hidden=\"true\">\n                        <svg viewBox=\"0 0 24 24\"><polyline points=\"9 11 12 14 22 4\"><\/polyline><path d=\"M21 12v7a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2V5a2 2 0 0 1 2-2h11\"><\/path><\/svg>\n                    <\/div>\n                    <div class=\"sec8-doc-content\">\n                        <h4>Model &#038; Configuration Confirmation<\/h4>\n                        <p>Alignment of specific fuse naming rules, ratings, and physical dimensions before manufacturing release.<\/p>\n                    <\/div>\n                <\/div>\n\n                <!-- Card C -->\n                <div class=\"sec8-doc-card\">\n                    <div class=\"sec8-doc-icon\" aria-hidden=\"true\">\n                        <svg viewBox=\"0 0 24 24\"><rect x=\"2\" y=\"4\" width=\"20\" height=\"16\" rx=\"2\" ry=\"2\"><\/rect><line x1=\"12\" y1=\"4\" x2=\"12\" y2=\"20\"><\/line><line x1=\"2\" y1=\"12\" x2=\"22\" y2=\"12\"><\/line><\/svg>\n                    <\/div>\n                    <div class=\"sec8-doc-content\">\n                        <h4>Packing List &#038; Commercial Invoice<\/h4>\n                        <p>Structured commercial documents provided to support international shipping and customs clearance.<\/p>\n                    <\/div>\n                <\/div>\n\n                <!-- Card D -->\n                <div class=\"sec8-doc-card\">\n                    <div class=\"sec8-doc-icon\" aria-hidden=\"true\">\n                        <svg viewBox=\"0 0 24 24\"><path d=\"M20.59 13.41l-7.17 7.17a2 2 0 0 1-2.83 0L2 12V2h10l8.59 8.59a2 2 0 0 1 0 2.82z\"><\/path><line x1=\"7\" y1=\"7\" x2=\"7.01\" y2=\"7\"><\/line><\/svg>\n                    <\/div>\n                    <div class=\"sec8-doc-content\">\n                        <h4>Product Marking \/ Label Information<\/h4>\n                        <p>Verification of physical labels, ratings, and batch traceability markings applied to the fuse body.<\/p>\n                    <\/div>\n                <\/div>\n\n                <!-- Card E -->\n                <div class=\"sec8-doc-card\">\n                    <div class=\"sec8-doc-icon\" aria-hidden=\"true\">\n                        <svg viewBox=\"0 0 24 24\"><path d=\"M14 2H6a2 2 0 0 0-2 2v16a2 2 0 0 0 2 2h12a2 2 0 0 0 2-2V8z\"><\/path><polyline points=\"14 2 14 8 20 8\"><\/polyline><line x1=\"12\" y1=\"18\" x2=\"12\" y2=\"12\"><\/line><line x1=\"9\" y1=\"15\" x2=\"15\" y2=\"15\"><\/line><\/svg>\n                    <\/div>\n                    <div class=\"sec8-doc-content\">\n                        <h4>Order Review Summary (If Requested)<\/h4>\n                        <p>Compiled technical and commercial summaries provided to support your internal procurement approval workflows.<\/p>\n                    <\/div>\n                <\/div>\n\n                <!-- Card F -->\n                <div class=\"sec8-doc-card\">\n                    <div class=\"sec8-doc-icon\" aria-hidden=\"true\">\n                        <svg viewBox=\"0 0 24 24\"><path d=\"M21 11.5a8.38 8.38 0 0 1-.9 3.8 8.5 8.5 0 0 1-7.6 4.7 8.38 8.38 0 0 1-3.8-.9L3 21l1.9-5.7a8.38 8.38 0 0 1-.9-3.8 8.5 8.5 0 0 1 4.7-7.6 8.38 8.38 0 0 1 3.8-.9h.5a8.48 8.48 0 0 1 8 8v.5z\"><\/path><\/svg>\n                    <\/div>\n                    <div class=\"sec8-doc-content\">\n                        <h4>Export Communication Workflow<\/h4>\n                        <p>Closed-loop communication records tracking resolved technical clarifications and logistics queries.<\/p>\n                    <\/div>\n                <\/div>\n\n            <\/div>\n        <\/div>\n\n        <!-- 4. Scope Note \/ Reminder -->\n        <div class=\"sec8-scope-note\">\n            <h4>Documentation Scope Reminder<\/h4>\n            <p>\n                The depth and availability of the document package depend on the confirmed project scope, commercial terms, and specific destination requirements. Certain documentation may be available upon request.\n            <\/p>\n        <\/div>\n\n    <\/div>\n<\/section>\n<!-- SEC8 MODULE END -->\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-stackable-columns alignfull stk-block-columns stk-block stk-34bad20\" data-block-id=\"34bad20\"><div class=\"stk-row stk-inner-blocks stk-block-content stk-content-align stk-34bad20-column alignfull\">\n<div class=\"wp-block-stackable-column stk-block-column stk-column stk-block stk-cbf5fe4\" data-v=\"4\" data-block-id=\"cbf5fe4\"><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-cbf5fe4-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-cbf5fe4-inner-blocks\">\n<style>\n    \/* --- CSS VARIABLES (SEC9 Specific - Clean White Theme) --- *\/\n    :root {\n        \/* \u6838\u5fc3\u5f3a\u8c03\u8272 *\/\n        --sec9-accent: #78d3ca; \n        --sec9-accent-hover: #5bbdb4;\n        \n        \/* \u80cc\u666f\u4e0e\u8fb9\u6846 *\/\n        --sec9-bg: #ffffff;\n        --sec9-card-bg: #ffffff;\n        --sec9-border: #e2e8f0;\n        --sec9-border-hover: #cbd5e1;\n\n        \/* \u6587\u672c\u8272\u7cfb *\/\n        --sec9-text-title: #0f172a;\n        --sec9-text-body: #334155; \n        --sec9-text-muted: #64748b;\n\n        \/* \u95f4\u8ddd\u4e0e\u5706\u89d2 *\/\n        --sec9-padding-desktop: 100px 24px;\n        --sec9-padding-tablet: 80px 20px;\n        --sec9-padding-mobile: 64px 16px;\n        --sec9-radius: 8px; \/* Slightly sharper for technical feel *\/\n    }\n\n    \/* --- MODULE CONTAINER --- *\/\n    #sec9-faq-resources {\n        font-family: 'Inter', -apple-system, BlinkMacSystemFont, \"Segoe UI\", Roboto, Helvetica, Arial, sans-serif;\n        line-height: 1.6;\n        box-sizing: border-box;\n        \n        background-color: var(--sec9-bg);\n        color: var(--sec9-text-body);\n        padding: var(--sec9-padding-desktop);\n        width: 100%;\n        border-top: 1px solid var(--sec9-border); \/* Subtle separator from SEC8 *\/\n    }\n\n    #sec9-faq-resources * {\n        box-sizing: border-box;\n    }\n\n    .sec9-inner {\n        max-width: 1240px;\n        margin: 0 auto;\n    }\n\n    \/* --- HEADER --- *\/\n    .sec9-header {\n        max-width: 800px;\n        margin-bottom: 56px;\n    }\n\n    .sec9-eyebrow {\n        display: flex;\n        align-items: center;\n        font-size: 0.875rem;\n        font-weight: 700;\n        text-transform: uppercase;\n        letter-spacing: 0.05em;\n        color: var(--sec9-text-muted);\n        margin-bottom: 12px;\n    }\n\n    \/* Accent Dot *\/\n    .sec9-eyebrow::before {\n        content: '';\n        display: block;\n        width: 6px;\n        height: 6px;\n        background-color: var(--sec9-accent);\n        margin-right: 12px;\n        border-radius: 50%;\n    }\n\n    .sec9-h2 {\n        font-size: 2rem;\n        font-weight: 700;\n        color: var(--sec9-text-title);\n        margin: 0 0 16px 0;\n        line-height: 1.25;\n    }\n\n    .sec9-intro {\n        font-size: 1.125rem;\n        color: var(--sec9-text-body);\n        max-width: 760px;\n        margin: 0;\n    }\n\n    \/* --- FAQ DUAL COLUMN LAYOUT --- *\/\n    .faq-container {\n        display: flex;\n        flex-wrap: wrap;\n        gap: 24px;\n        margin-bottom: 64px;\n    }\n\n    .faq-col {\n        flex: 1;\n        min-width: 300px;\n        display: flex;\n        flex-direction: column;\n        gap: 16px;\n    }\n\n    \/* Accordion Item Styling *\/\n    details.sec9-accordion {\n        background-color: var(--sec9-card-bg);\n        border: 1px solid var(--sec9-border);\n        border-radius: var(--sec9-radius);\n        overflow: hidden;\n        transition: border-color 0.2s ease, box-shadow 0.2s ease;\n    }\n\n    details.sec9-accordion:hover {\n        border-color: var(--sec9-border-hover);\n    }\n\n    \/* Open State Styling *\/\n    details.sec9-accordion[open] {\n        border-color: var(--sec9-accent); \/* Active Border Color *\/\n        border-left: 4px solid var(--sec9-accent); \/* Left Accent Bar *\/\n        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.03);\n    }\n    \n    \/* Adjust padding for left border on open state *\/\n    details.sec9-accordion[open] summary {\n        padding-left: 20px; \/* Compensate for border width *\/\n    }\n\n    \/* Summary (Question) *\/\n    summary.faq-summary {\n        list-style: none;\n        padding: 20px 24px;\n        cursor: pointer;\n        display: flex;\n        justify-content: space-between;\n        align-items: center;\n        font-weight: 600;\n        font-size: 1.05rem;\n        color: var(--sec9-text-title);\n        transition: color 0.2s ease, padding 0.2s ease;\n    }\n\n    \/* Remove default triangle *\/\n    summary.faq-summary::-webkit-details-marker {\n        display: none;\n    }\n\n    details.sec9-accordion[open] summary.faq-summary {\n        color: var(--sec9-text-title); \n        border-bottom: 1px solid #f1f5f9;\n    }\n\n    \/* Custom Icon (+\/-) *\/\n    .faq-icon {\n        flex-shrink: 0;\n        width: 20px;\n        height: 20px;\n        position: relative;\n        margin-left: 16px;\n    }\n\n    .faq-icon::before,\n    .faq-icon::after {\n        content: '';\n        position: absolute;\n        background-color: var(--sec9-accent);\n        top: 50%;\n        left: 50%;\n        transform: translate(-50%, -50%);\n        transition: transform 0.2s ease;\n    }\n\n    .faq-icon::before { width: 14px; height: 2px; } \/* Horizontal *\/\n    .faq-icon::after { width: 2px; height: 14px; } \/* Vertical *\/\n\n    \/* Rotate to minus when open *\/\n    details.sec9-accordion[open] .faq-icon::after {\n        transform: translate(-50%, -50%) rotate(90deg); \/* Merges into horizontal line *\/\n    }\n\n    \/* Answer Content *\/\n    .faq-content {\n        padding: 0 24px 24px 24px;\n        padding-top: 16px;\n        color: var(--sec9-text-body);\n        font-size: 0.95rem;\n        line-height: 1.6;\n    }\n\n    .faq-content p {\n        margin: 0 0 16px 0;\n    }\n\n    .faq-content p:last-child {\n        margin-bottom: 0;\n    }\n\n    \/* --- SEO RESOURCE BOX --- *\/\n    .seo-resource-box {\n        max-width: 480px;\n        background-color: #f8fafc; \/* Slight contrast box *\/\n        border-left: 4px solid var(--sec9-accent);\n        padding: 24px 32px;\n        border-radius: 0 var(--sec9-radius) var(--sec9-radius) 0;\n    }\n\n    .seo-title {\n        display: block;\n        font-size: 1.125rem;\n        font-weight: 700;\n        color: var(--sec9-text-title);\n        margin-bottom: 16px;\n        position: relative;\n    }\n\n    .seo-list {\n        list-style: none;\n        padding: 0;\n        margin: 0;\n        display: flex;\n        flex-direction: column;\n        gap: 12px;\n    }\n\n    .seo-link {\n        text-decoration: none;\n        color: var(--sec9-text-body);\n        font-weight: 500;\n        font-size: 0.95rem;\n        transition: color 0.2s ease;\n        display: flex;\n        align-items: center;\n    }\n\n    .seo-link:hover {\n        color: var(--sec9-accent-hover);\n        text-decoration: underline;\n    }\n\n    .seo-link::before {\n        content: '\u2192';\n        margin-right: 8px;\n        color: var(--sec9-accent);\n        font-weight: bold;\n    }\n\n    \/* --- RESPONSIVE --- *\/\n    @media (max-width:999px) {\n        #sec9-faq-resources {\n            padding: var(--sec9-padding-tablet);\n        }\n    }\n\n    @media (max-width:689px) {\n        #sec9-faq-resources {\n            padding: var(--sec9-padding-mobile);\n        }\n\n        .sec9-h2 {\n            font-size: 1.75rem;\n        }\n\n        .faq-container {\n            flex-direction: column; \/* Stack columns *\/\n            gap: 16px;\n        }\n\n        .faq-col {\n            min-width: 100%;\n        }\n        \n        \/* Adjust open state left border width on mobile for space *\/\n        details.sec9-accordion[open] {\n            border-left-width: 4px; \n        }\n    }\n<\/style>\n\n<!-- SEC9 MODULE START -->\n<section id=\"sec9-faq-resources\">\n    <div class=\"sec9-inner\">\n        \n        <!-- Header -->\n        <header class=\"sec9-header\">\n            <span class=\"sec9-eyebrow\">FAQ &#038; Resources<\/span>\n            <h2 class=\"sec9-h2\">Frequently Asked Questions on Current Limiting Transformer Fuses<\/h2>\n            <p class=\"sec9-intro\">\n                Review these common engineering queries regarding the purpose, coordination, and application boundaries of current-limiting backup fuses to assist with your project evaluation.\n            <\/p>\n        <\/header>\n\n        <!-- FAQ Dual Columns -->\n        <div class=\"faq-container\">\n            \n            <!-- Left Column (Q1-Q5) -->\n            <div class=\"faq-col\">\n                \n                <!-- Q1 (Default Open) -->\n                <details class=\"sec9-accordion\" open>\n                    <summary class=\"faq-summary\">\n                        What is a current limiting fuse used for in transformer protection systems?\n                        <div class=\"faq-icon\"><\/div>\n                    <\/summary>\n                    <div class=\"faq-content\">\n                        <p>It is primarily used to rapidly interrupt high-magnitude fault currents and provide essential backup protection. By limiting the peak fault current and significantly reducing the let-through energy (I\u00b2t), it minimizes thermal and electrodynamic stress on transformer components during severe short-circuit events.<\/p>\n                    <\/div>\n                <\/details>\n\n                <!-- Q2 -->\n                <details class=\"sec9-accordion\">\n                    <summary class=\"faq-summary\">\n                        What is the difference between a current limiting fuse and a regular expulsion fuse?\n                        <div class=\"faq-icon\"><\/div>\n                    <\/summary>\n                    <div class=\"faq-content\">\n                        <p>While a regular expulsion fuse interrupts the circuit after a natural current zero-crossing, a current-limiting fuse forces the arc to extinguish within the first half-cycle. This aggressive arc-quenching limits the peak current to a value significantly lower than the prospective fault current.<\/p>\n                    <\/div>\n                <\/details>\n\n                <!-- Q3 -->\n                <details class=\"sec9-accordion\">\n                    <summary class=\"faq-summary\">\n                        Do current limiting fuses reduce fault current?\n                        <div class=\"faq-icon\"><\/div>\n                    <\/summary>\n                    <div class=\"faq-content\">\n                        <p>Yes, they actively restrict the peak fault current and drastically reduce the total let-through energy during high-current short-circuit events. However, the exact reduction capability depends on the specific fuse class, current rating, and the system&#8217;s prospective fault current level.<\/p>\n                    <\/div>\n                <\/details>\n\n                <!-- Q4 -->\n                <details class=\"sec9-accordion\">\n                    <summary class=\"faq-summary\">\n                        How does a current limiting backup fuse work?\n                        <div class=\"faq-icon\"><\/div>\n                    <\/summary>\n                    <div class=\"faq-content\">\n                        <p>During a severe fault, the internal fuse element melts almost instantly, creating an electrical arc. The surrounding filler medium (such as high-purity silica sand) rapidly cools and partitions this arc. This generates a high internal resistance that suppresses the fault current before it can reach its peak.<\/p>\n                    <\/div>\n                <\/details>\n\n                <!-- Q5 -->\n                <details class=\"sec9-accordion\">\n                    <summary class=\"faq-summary\">\n                        Can a current limiting fuse replace all other protective devices?\n                        <div class=\"faq-icon\"><\/div>\n                    <\/summary>\n                    <div class=\"faq-content\">\n                        <p>No. A current-limiting backup fuse is not designed for full-range protection. It must be coordinated with a low-current protective device, such as a Bay-O-Net assembly. The low-current device handles standard overloads, while the current-limiting fuse strictly clears high-magnitude short circuits.<\/p>\n                    <\/div>\n                <\/details>\n\n            <\/div>\n\n            <!-- Right Column (Q6-Q10) -->\n            <div class=\"faq-col\">\n                \n                <!-- Q6 -->\n                <details class=\"sec9-accordion\">\n                    <summary class=\"faq-summary\">\n                        How do I select the right voltage class and current rating?\n                        <div class=\"faq-icon\"><\/div>\n                    <\/summary>\n                    <div class=\"faq-content\">\n                        <p>Selection begins by matching the system&#8217;s nominal voltage to the appropriate fuse voltage class (e.g., 15.5kV, 25kV). Next, determine the rated current based on the transformer&#8217;s full-load current and expected inrush envelope. Finally, verify the breaking capacity against site fault levels.<\/p>\n                    <\/div>\n                <\/details>\n\n                <!-- Q7 -->\n                <details class=\"sec9-accordion\">\n                    <summary class=\"faq-summary\">\n                        What is the role of coordination in backup fuse applications?\n                        <div class=\"faq-icon\"><\/div>\n                    <\/summary>\n                    <div class=\"faq-content\">\n                        <p>Coordination ensures that protective devices operate in the correct, selective sequence. Proper time-current curve (TCC) coordination guarantees that low-level faults are cleared by the primary expulsion device, reserving the current-limiting backup fuse strictly for catastrophic short circuits.<\/p>\n                    <\/div>\n                <\/details>\n\n                <!-- Q8 -->\n                <details class=\"sec9-accordion\">\n                    <summary class=\"faq-summary\">\n                        Are current limiting fuses resettable after operation?\n                        <div class=\"faq-icon\"><\/div>\n                    <\/summary>\n                    <div class=\"faq-content\">\n                        <p>No, current limiting fuses are non-resettable, one-time operation devices. Once the internal element melts and clears a fault, the entire fuse cartridge must be safely removed and replaced with a new unit of the exact same specification to safely restore system protection.<\/p>\n                    <\/div>\n                <\/details>\n\n                <!-- Q9 -->\n                <details class=\"sec9-accordion\">\n                    <summary class=\"faq-summary\">\n                        What project data should be prepared before requesting an RFQ?\n                        <div class=\"faq-icon\"><\/div>\n                    <\/summary>\n                    <div class=\"faq-content\">\n                        <p>To ensure accurate engineering selection, please prepare the system operating voltage, prospective short-circuit fault level, required current rating range, dimensional interface constraints (such as tube diameter and terminal thread size), and any specific protection coordination guidelines.<\/p>\n                    <\/div>\n                <\/details>\n\n                <!-- Q10 -->\n                <details class=\"sec9-accordion\">\n                    <summary class=\"faq-summary\">\n                        Can these fuses be used for household electronics or car-audio circuits?\n                        <div class=\"faq-icon\"><\/div>\n                    <\/summary>\n                    <div class=\"faq-content\">\n                        <p>No. The current limiting backup fuses detailed here are engineered exclusively for medium-voltage utility and industrial transformer protection (e.g., 15kV to 40kV). They are fundamentally incompatible with consumer electronics, 13A household plugs, residential breakers, or 12V automotive retrofits.<\/p>\n                    <\/div>\n                <\/details>\n\n            <\/div>\n\n        <\/div>\n\n        <!-- SEO Resource Box -->\n        <div class=\"seo-resource-box\">\n            <span class=\"seo-title\">Related Resources<\/span>\n            <ul class=\"seo-list\">\n                <!-- Internal Link -->\n                <li>\n                    <a href=\"\/transformer-accessories\/\" class=\"seo-link\">\n                        Explore Transformer Accessories Pillar\n                    <\/a>\n                <\/li>\n                <!-- External Authority Link -->\n                <li>\n                    <a href=\"https:\/\/www.nfpa.org\/codes-and-standards\/nfpa-70-standard-development\/70\" class=\"seo-link\" target=\"_blank\" rel=\"noopener\">\n                        NFPA 70 (NEC) \u2013 National Electrical Code\n                    <\/a>\n                <\/li>\n            <\/ul>\n        <\/div>\n\n    <\/div>\n<\/section>\n<!-- SEC9 MODULE END -->\n<\/div><\/div><\/div>\n<\/div><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Transformer Accessories Series Current Limiting Fuses for Distribution Transformer Protection Medium-voltage current limiting fuse solutions engineered for rapid fault-current cutoff, high interrupting capability, and reliable coordination in distribution transformer protection schemes. Backup Protection Integration \u2022 Fast Technical Response \u2022 Export Documentation Request Quote View Specifications Product Type Current Limiting Fuse Protection Function High Fault Interruption [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":781,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-793","page","type-page","status-publish","hentry"],"blocksy_meta":{"has_hero_section":"disabled","vertical_spacing_source":"custom","content_area_spacing":"bottom","styles_descriptor":{"styles":{"desktop":"","tablet":"","mobile":""},"google_fonts":[],"version":6}},"_hostinger_reach_plugin_has_subscription_block":false,"_hostinger_reach_plugin_is_elementor":false,"_links":{"self":[{"href":"https:\/\/zeeyielec.com\/pt\/wp-json\/wp\/v2\/pages\/793","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/zeeyielec.com\/pt\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/zeeyielec.com\/pt\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/zeeyielec.com\/pt\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/zeeyielec.com\/pt\/wp-json\/wp\/v2\/comments?post=793"}],"version-history":[{"count":8,"href":"https:\/\/zeeyielec.com\/pt\/wp-json\/wp\/v2\/pages\/793\/revisions"}],"predecessor-version":[{"id":1048,"href":"https:\/\/zeeyielec.com\/pt\/wp-json\/wp\/v2\/pages\/793\/revisions\/1048"}],"up":[{"embeddable":true,"href":"https:\/\/zeeyielec.com\/pt\/wp-json\/wp\/v2\/pages\/781"}],"wp:attachment":[{"href":"https:\/\/zeeyielec.com\/pt\/wp-json\/wp\/v2\/media?parent=793"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}