{"id":1352,"date":"2025-11-27T07:45:32","date_gmt":"2025-11-27T07:45:32","guid":{"rendered":"https:\/\/xbrele.com\/?page_id=1352"},"modified":"2025-12-01T05:59:05","modified_gmt":"2025-12-01T05:59:05","slug":"contact-box","status":"publish","type":"page","link":"https:\/\/xbrele.com\/es\/switchgear-parts\/contact-box\/","title":{"rendered":"Serie de cajas de contacto epoxi (12 kV \u2013 40,5 kV)"},"content":{"rendered":"\n<div class=\"wp-block-stackable-columns alignfull stk-block-columns stk-block stk-ad02337\" data-block-id=\"ad02337\"><div class=\"stk-row stk-inner-blocks stk-block-content stk-content-align stk-ad02337-column alignfull\">\n<div class=\"wp-block-stackable-column stk-block-column stk-column stk-block stk-b7641a8\" data-v=\"4\" data-block-id=\"b7641a8\"><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-b7641a8-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-b7641a8-inner-blocks\">\n<section id=\"sec1-contact-box-hero\" style=\"position:relative;overflow:hidden;background-color:#020617;color:#e5e7eb;padding:200px 0 128px;\">\n  <style>\n    \/* \u57fa\u7840\u5b57\u4f53\u4e0e\u5bb9\u5668 *\/\n    #sec1-contact-box-hero { \n      font-family:system-ui,-apple-system,BlinkMacSystemFont,\"Segoe UI\",Arial,sans-serif; 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font-size:12px; \n    }\n    .spec-label { \n      text-transform:uppercase; letter-spacing:.12em; color:#9ca3af; \n      margin-bottom:2px; font-size:11px; \n    }\n    .spec-value { \n      font-weight:500; color:#e5e7eb; \n    }\n\n    \/* \u54cd\u5e94\u5f0f\u9002\u914d *\/\n    @media(max-width:1000px){ \n      #sec1-contact-box-hero .hero-grid{grid-template-columns:1fr;} \n    }\n    @media(max-width:690px){ \n      #sec1-contact-box-hero h1{font-size:30px;} \n      #sec1-contact-box-hero .hero-shell{padding:0 18px;} \n    }\n  <\/style>\n\n  <div class=\"hero-shell\">\n    <div class=\"hero-grid\">\n\n      <div>\n        <div class=\"kicker\">Switchgear Insulation Components<\/div>\n\n        <h1>Epoxy Contact Box Series (12kV &#8211; 40.5kV)<\/h1>\n\n        <p class=\"sub\">\n          XBRELE\u2019s <strong>Contact Boxes<\/strong> (also known as <strong>Switchgear Spouts<\/strong> or <strong>Static Contact Housings<\/strong>) are precision-molded using APG Epoxy Resin. Designed for KYN28 and UniGear panels, they ensure superior dielectric strength and PD &lt; 5pC reliability for Medium Voltage systems.\n        <\/p>\n\n        <div class=\"badges\">\n          <span class=\"badge\">APG Technology<\/span>\n          <span class=\"badge\">12kV \/ 24kV \/ 40.5kV<\/span>\n          <span class=\"badge\">KYN28 Compatible<\/span>\n          <span class=\"badge\">IEC 60694 Standard<\/span>\n        <\/div>\n      <\/div>\n\n      <aside class=\"hero-card\">\n        <h3>Series Overview<\/h3>\n        <p>\n          The CH3 series provides a safe insulation interface between the vacuum circuit breaker handcart and the busbar compartment, featuring high impulse withstand voltage (BIL) and mechanical robustness.\n        <\/p>\n\n        <div class=\"spec-grid\">\n          <div>\n            <div class=\"spec-label\">Voltage Class<\/div>\n            <div class=\"spec-value\">12 \/ 24 \/ 40.5 kV<\/div>\n          <\/div>\n          <div>\n            <div class=\"spec-label\">Current Range<\/div>\n            <div class=\"spec-value\">630A \u2013 4000A<\/div>\n          <\/div>\n          <div>\n            <div class=\"spec-label\">Material<\/div>\n            <div class=\"spec-value\">Epoxy Resin (APG)<\/div>\n          <\/div>\n          <div>\n            <div class=\"spec-label\">Partial Discharge<\/div>\n            <div class=\"spec-value\">&lt; 5 pC<\/div>\n          <\/div>\n        <\/div>\n      <\/aside>\n\n    <\/div>\n  <\/div>\n<\/section>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-stackable-columns alignfull stk-block-columns stk-block stk-b11d756\" data-block-id=\"b11d756\"><div class=\"stk-row stk-inner-blocks stk-block-content stk-content-align stk-b11d756-column alignfull\">\n<div class=\"wp-block-stackable-column stk-block-column stk-column stk-block stk-a841776\" data-v=\"4\" data-block-id=\"a841776\"><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-a841776-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-a841776-inner-blocks\">\n<section id=\"sec2-contact-box-overview\" style=\"background:#ffffff;padding:90px 0 105px;color:#0f172a;\">\n  <style>\n    \/* \u6837\u5f0f\u4fdd\u6301\u4e0d\u53d8\uff0c\u4ec5\u66ff\u6362 ID *\/\n    #sec2-contact-box-overview{font-family:system-ui,-apple-system,BlinkMacSystemFont,\"Segoe UI\",Arial,sans-serif;}\n    #sec2-contact-box-overview .ckg-shell{max-width:1600px;margin:0 auto;padding:0 5vw;}\n    #sec2-contact-box-overview .overview-grid{display:grid;grid-template-columns:minmax(0,1.4fr) minmax(0,1fr);gap:52px;align-items:center;}\n    #sec2-contact-box-overview .kicker{text-transform:uppercase;letter-spacing:.16em;font-size:12px;font-weight:600;color:#38bdf8;margin-bottom:10px;}\n    #sec2-contact-box-overview h2{font-size:28px;margin:0 0 14px;color:#0f172a;}\n    #sec2-contact-box-overview p{font-size:16px;line-height:1.85;margin:0 0 16px;color:#4b5563;}\n    #sec2-contact-box-overview .apps-box{background:#f9fafb;padding:22px 24px 20px;border-radius:18px;border:1px solid #e5e7eb;}\n    #sec2-contact-box-overview .apps-box h3{font-size:15px;margin:0 0 12px;text-transform:uppercase;letter-spacing:.14em;color:#6b7280;}\n    #sec2-contact-box-overview ul{list-style:none;padding:0;margin:0;display:grid;gap:10px;font-size:14px;color:#374151;}\n    #sec2-contact-box-overview ul li{position:relative;padding-left:16px;line-height:1.7;}\n    #sec2-contact-box-overview ul li::before{content:\"\";position:absolute;left:0;top:8px;width:6px;height:6px;border-radius:999px;background:#38bdf8;}\n    @media(max-width:1000px){#sec2-contact-box-overview .overview-grid{grid-template-columns:1fr;}}\n  <\/style>\n\n  <div class=\"ckg-shell\">\n    <div class=\"overview-grid\">\n      \n      <div>\n        <div class=\"kicker\">Product Overview<\/div>\n        \n        <h2>Reliable Insulation Interface for Medium Voltage Switchgear<\/h2>\n\n        <p>\n          XBRELE <strong>Contact Boxes<\/strong> (technically referred to as <strong>Switchgear Spouts<\/strong> or <strong>Static Contact Housings<\/strong>) serve as the critical insulation interface in air-insulated switchgear cabinets. They isolate the static contacts from the busbar compartment, ensuring safe operation for <strong>12kV, 24kV, and 40.5kV<\/strong> distribution networks.\n        <\/p>\n\n        <p>\n          Manufactured using advanced <strong>APG (Automatic Pressure Gelation)<\/strong> technology with high-grade epoxy resin, our contact boxes offer superior dielectric strength and void-free mechanical stability. Unlike standard insulators, XBRELE\u2019s <strong>epoxy contact boxes<\/strong> undergo rigorous testing to guarantee a <strong>Partial Discharge (PD) of < 5pC<\/strong>, preventing insulation breakdown over long operational cycles.\n        <\/p>\n\n        <p>\n          Designed for seamless compatibility, our CH3 series is the standard choice for <strong>KYN28A-12<\/strong>, KYN61, and UniGear ZS1 type armored removable AC metal-enclosed switchgear. Compliance with international standards, such as \n          <a href=\"https:\/\/webstore.iec.ch\/publication\/62444\" style=\"color:#2563EB;text-decoration:none;\" target=\"_blank\" rel=\"dofollow noopener\">\n            IEC 62271-1 High-voltage switchgear\n          <\/a>, ensures our <strong>medium voltage contact boxes<\/strong> meet global safety requirements for creepage distance and impulse withstand voltage (BIL).\n        <\/p>\n\n        <p style=\"margin-top:14px;font-size:14px;color:#4b5563;\">\n          For a complete range of insulators, bushings, and other <strong>switchgear components<\/strong>, please visit our main\n          <a href=\"https:\/\/xbrele.com\/switchgear-parts\/\" style=\"color:#2563EB;text-decoration:none;\">\n            Switchgear Parts &#038; Accessories pillar page\n          <\/a>.\n        <\/p>\n      <\/div>\n\n      <aside class=\"apps-box\">\n        <h3>Typical Applications<\/h3>\n        <ul>\n          <li><strong>Medium Voltage Switchgear:<\/strong> Standard insulation for KYN28\/GZS1 and KYN61 (40.5kV) vacuum circuit breaker cabinets.<\/li>\n          <li><strong>Power Distribution Utilities:<\/strong> High-reliability <strong>contact spouts<\/strong> for 12kV-24kV substations and grid infrastructure.<\/li>\n          <li><strong>Industrial Plants:<\/strong> Heavy-duty <strong>epoxy contact boxes<\/strong> (up to 4000A) for high-load main incomer panels.<\/li>\n          <li><strong>Retrofitting Projects:<\/strong> Specialized dimensions (e.g., JYN2-12) for upgrading older <strong>switchgear insulation<\/strong> systems.<\/li>\n        <\/ul>\n      <\/aside>\n      \n    <\/div>\n  <\/div>\n<\/section>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-stackable-columns alignfull stk-block-columns stk-block stk-b9719eb\" data-block-id=\"b9719eb\"><div class=\"stk-row stk-inner-blocks stk-block-content stk-content-align stk-b9719eb-column alignfull\">\n<div class=\"wp-block-stackable-column stk-block-column stk-column stk-block stk-55d0b55\" data-v=\"4\" data-block-id=\"55d0b55\"><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-55d0b55-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-55d0b55-inner-blocks\">\n\n<section id=\"sec3-product-grid\" style=\"padding:80px 0; 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}\n\n    .modal-body-scroll { padding: 30px; overflow-y: auto; flex-grow: 1; }\n    \n    .modal-table { width: 100%; border-collapse: collapse; font-size: 14px; border: 1px solid #E2E8F0; }\n    .modal-table tr:nth-child(even) { background-color: #F8FAFC; }\n    .modal-table th { text-align: left; padding: 12px 16px; color: #64748B; font-weight: 600; width: 45%; border-bottom: 1px solid #E2E8F0; border-right: 1px solid #E2E8F0; }\n    .modal-table td { text-align: left; padding: 12px 16px; color: #334155; font-weight: 500; border-bottom: 1px solid #E2E8F0; }\n\n    .modal-footer { \n      padding: 20px 30px; background: #F8FAFC; border-top: 1px solid #E2E8F0; \n      display: flex; justify-content: space-between; align-items: center; \n    }\n    .footer-btn { \n      background: #0F172A; color: #fff; padding: 10px 24px; border-radius: 6px; \n      font-weight: 600; font-size: 14px; text-decoration: none; transition: background 0.2s; \n    }\n    .footer-btn:hover { background: #1E293B; }\n\n    \/* \u79fb\u52a8\u7aef\u9002\u914d *\/\n    @media (max-width: 900px) {\n      .modal-content { grid-template-columns: 1fr; max-height: 90vh; display: flex; flex-direction: column; }\n      .modal-img-col { height: 250px; padding: 10px; border-right: none; border-bottom: 1px solid #E2E8F0; flex-shrink: 0; }\n      .acc-grid { grid-template-columns: 1fr 1fr; gap: 12px; }\n    }\n  <\/style>\n\n  <div class=\"acc-container\">\n    <div class=\"acc-header\">\n      <h2>Complete Contact Box Series<\/h2>\n      <p>12kV &#8211; 40.5kV epoxy resin contact boxes. Verified specifications for KYN28, KYN61, and JYN cabinets.<\/p>\n    <\/div>\n\n    <div class=\"acc-tabs\">\n      <button class=\"acc-tab-btn\" onclick=\"filterGrid('all', this)\">All Models (16)<\/button>\n      <button class=\"acc-tab-btn active\" onclick=\"filterGrid('12kv', this)\">12kV Series (10)<\/button>\n      <button class=\"acc-tab-btn\" onclick=\"filterGrid('24kv', this)\">24kV Series (2)<\/button>\n      <button class=\"acc-tab-btn\" onclick=\"filterGrid('40kv', this)\">40.5kV Series (4)<\/button>\n    <\/div>\n\n    <div class=\"acc-grid\">\n      \n      <div class=\"acc-card\" data-category=\"12kv\" onclick=\"openDiagram('CH3-12\/150', '12kV', '630~1250A', '202 mm', '147\u00d7147 mm', 'Standard KYN28', 'https:\/\/xbrele.com\/wp-content\/uploads\/2025\/11\/xbrele-contact-box-ch3-12kv-150-drawing.webp')\">\n        <div class=\"acc-img-wrap\">\n          <span class=\"acc-badge badge-12kv\">12kV<\/span>\n          <img decoding=\"async\" src=\"https:\/\/xbrele.com\/wp-content\/uploads\/2025\/11\/xbrele-epoxy-contact-box-ch3-12kv-150.webp\" alt=\"XBRELE 12kV Epoxy Contact Box CH3-150 for KYN28 Switchgear\">\n        <\/div>\n        <div class=\"acc-body\">\n          <div class=\"acc-title\">CH3-12\/150 Standard<\/div>\n          <ul class=\"acc-specs\">\n            <li><span>Current<\/span> <span>630~1250A<\/span><\/li>\n            <li><span>Depth<\/span> <span>202 mm<\/span><\/li>\n            <li><span>Size<\/span> <span>147\u00d7147 mm<\/span><\/li>\n          <\/ul>\n          <div class=\"acc-link\">View Specs &#038; Drawing<\/div>\n        <\/div>\n      <\/div>\n\n      <div class=\"acc-card\" data-category=\"12kv\" onclick=\"openDiagram('CH3-12\/180', '12kV', '1250A', '174 mm', '176\u00d7176 mm', 'Standard Type', 'https:\/\/xbrele.com\/wp-content\/uploads\/2025\/11\/xbrele-contact-box-ch3-12kv-180-drawing.webp')\">\n        <div class=\"acc-img-wrap\">\n          <span class=\"acc-badge badge-12kv\">12kV<\/span>\n          <img decoding=\"async\" src=\"https:\/\/xbrele.com\/wp-content\/uploads\/2025\/11\/xbrele-epoxy-contact-box-ch3-12kv-180.webp\" alt=\"XBRELE Standard 12kV Contact Box CH3-180 Depth 174mm\">\n        <\/div>\n        <div class=\"acc-body\">\n          <div class=\"acc-title\">CH3-12\/180 Standard<\/div>\n          <ul class=\"acc-specs\">\n            <li><span>Current<\/span> <span>1250A<\/span><\/li>\n            <li><span>Depth<\/span> <span>174 mm<\/span><\/li>\n            <li><span>Size<\/span> <span>176\u00d7176 mm<\/span><\/li>\n          <\/ul>\n          <div class=\"acc-link\">View Specs &#038; Drawing<\/div>\n        <\/div>\n      <\/div>\n\n      <div class=\"acc-card\" data-category=\"12kv\" onclick=\"openDiagram('CH3-12\/180 Large', '12kV', '1250A', '205.5 mm', '176\u00d7176 mm', 'Large Mouth Design', 'https:\/\/xbrele.com\/wp-content\/uploads\/2025\/11\/xbrele-large-mouth-contact-box-12kv-180-drawing.webp')\">\n        <div class=\"acc-img-wrap\">\n          <span class=\"acc-badge badge-12kv\">12kV<\/span>\n          <img decoding=\"async\" src=\"https:\/\/xbrele.com\/wp-content\/uploads\/2025\/11\/xbrele-large-mouth-contact-box-12kv-180.webp\" alt=\"XBRELE Large Mouth 12kV Contact Box CH3-180 for 1250A VCB\">\n        <\/div>\n        <div class=\"acc-body\">\n          <div class=\"acc-title\">CH3-12\/180 Large<\/div>\n          <ul class=\"acc-specs\">\n            <li><span>Current<\/span> <span>1250A<\/span><\/li>\n            <li><span>Depth<\/span> <span>205.5 mm<\/span><\/li>\n            <li><span>Size<\/span> <span>176\u00d7176 mm<\/span><\/li>\n          <\/ul>\n          <div class=\"acc-link\">View Specs &#038; Drawing<\/div>\n        <\/div>\n      <\/div>\n\n      <div class=\"acc-card\" data-category=\"12kv\" onclick=\"openDiagram('CH3-12\/180 Vent', '12kV', '1250A', '211 mm', '170\u00d7176 mm', 'Air Cooling Port', 'https:\/\/xbrele.com\/wp-content\/uploads\/2025\/11\/xbrele-ventilated-contact-box-12kv-180-drawing.webp')\">\n        <div class=\"acc-img-wrap\">\n          <span class=\"acc-badge badge-12kv\">12kV<\/span>\n          <img decoding=\"async\" src=\"https:\/\/xbrele.com\/wp-content\/uploads\/2025\/11\/xbrele-ventilated-contact-box-12kv-180.webp\" alt=\"XBRELE Ventilated 12kV Contact Box CH3-180 with Air Cooling Port\">\n        <\/div>\n        <div class=\"acc-body\">\n          <div class=\"acc-title\">CH3-12\/180 Vent<\/div>\n          <ul class=\"acc-specs\">\n            <li><span>Current<\/span> <span>1250A<\/span><\/li>\n            <li><span>Depth<\/span> <span>211 mm<\/span><\/li>\n            <li><span>Feature<\/span> <span>Forced Air<\/span><\/li>\n          <\/ul>\n          <div class=\"acc-link\">View Specs &#038; Drawing<\/div>\n        <\/div>\n      <\/div>\n\n      <div class=\"acc-card\" data-category=\"12kv\" onclick=\"openDiagram('CH3-12\/190', '12kV', '1600A', '190 mm', 'Dia 145 mm', 'Heavy Duty', 'https:\/\/xbrele.com\/wp-content\/uploads\/2025\/11\/xbrele-high-current-contact-box-12kv-190-drawing.webp')\">\n        <div class=\"acc-img-wrap\">\n          <span class=\"acc-badge badge-12kv\">12kV<\/span>\n          <img decoding=\"async\" src=\"https:\/\/xbrele.com\/wp-content\/uploads\/2025\/11\/xbrele-high-current-contact-box-12kv-190.webp\" alt=\"XBRELE High Current 1600A Contact Box CH3-190 Heavy Duty\">\n        <\/div>\n        <div class=\"acc-body\">\n          <div class=\"acc-title\">CH3-12\/190<\/div>\n          <ul class=\"acc-specs\">\n            <li><span>Current<\/span> <span>1600A<\/span><\/li>\n            <li><span>Depth<\/span> <span>190 mm<\/span><\/li>\n            <li><span>Dia<\/span> <span>145 mm<\/span><\/li>\n          <\/ul>\n          <div class=\"acc-link\">View Specs &#038; Drawing<\/div>\n        <\/div>\n      <\/div>\n\n      <div class=\"acc-card\" data-category=\"12kv\" onclick=\"openDiagram('CH3-12\/208', '12kV', '1600~2000A', '208 mm', '208\u00d7208 mm', 'Main Busbar Incomer', 'https:\/\/xbrele.com\/wp-content\/uploads\/2025\/11\/xbrele-heavy-duty-contact-box-12kv-208-drawing.webp')\">\n        <div class=\"acc-img-wrap\">\n          <span class=\"acc-badge badge-12kv\">12kV<\/span>\n          <img decoding=\"async\" src=\"https:\/\/xbrele.com\/wp-content\/uploads\/2025\/11\/xbrele-heavy-duty-contact-box-12kv-208.webp\" alt=\"XBRELE 2000A Heavy Duty Contact Box CH3-208 for Main Busbar\">\n        <\/div>\n        <div class=\"acc-body\">\n          <div class=\"acc-title\">CH3-12\/208<\/div>\n          <ul class=\"acc-specs\">\n            <li><span>Current<\/span> <span>1600~2000A<\/span><\/li>\n            <li><span>Depth<\/span> <span>208 mm<\/span><\/li>\n            <li><span>Size<\/span> <span>208\u00d7208 mm<\/span><\/li>\n          <\/ul>\n          <div class=\"acc-link\">View Specs &#038; Drawing<\/div>\n        <\/div>\n      <\/div>\n\n      <div class=\"acc-card\" data-category=\"12kv\" onclick=\"openDiagram('CH3-12\/250', '12kV', '2500~3150A', '244 mm', '250\u00d7250 mm', 'Ultra High Capacity', 'https:\/\/xbrele.com\/wp-content\/uploads\/2025\/11\/xbrele-ultra-current-contact-box-12kv-250-drawing.webp')\">\n        <div class=\"acc-img-wrap\">\n          <span class=\"acc-badge badge-12kv\">12kV<\/span>\n          <img decoding=\"async\" src=\"https:\/\/xbrele.com\/wp-content\/uploads\/2025\/11\/xbrele-ultra-current-contact-box-12kv-250.webp\" alt=\"XBRELE 3150A Ultra High Current Contact Box CH3-250\">\n        <\/div>\n        <div class=\"acc-body\">\n          <div class=\"acc-title\">CH3-12\/250<\/div>\n          <ul class=\"acc-specs\">\n            <li><span>Current<\/span> <span>2500~3150A<\/span><\/li>\n            <li><span>Depth<\/span> <span>244 mm<\/span><\/li>\n            <li><span>Size<\/span> <span>250\u00d7250 mm<\/span><\/li>\n          <\/ul>\n          <div class=\"acc-link\">View Specs &#038; Drawing<\/div>\n        <\/div>\n      <\/div>\n\n      <div class=\"acc-card\" data-category=\"12kv\" onclick=\"openDiagram('CH3-12\/250 Vent', '12kV', '2500~3150A', '245.5 mm', '250\u00d7250 mm', 'With Ventilation Port', 'https:\/\/xbrele.com\/wp-content\/uploads\/2025\/11\/xbrele-forced-cooling-contact-box-12kv-250-drawing.webp')\">\n        <div class=\"acc-img-wrap\">\n          <span class=\"acc-badge badge-12kv\">12kV<\/span>\n          <img decoding=\"async\" src=\"https:\/\/xbrele.com\/wp-content\/uploads\/2025\/11\/xbrele-forced-cooling-contact-box-12kv-250.webp\" alt=\"XBRELE Forced Air Cooling Contact Box CH3-250 for 3150A\">\n        <\/div>\n        <div class=\"acc-body\">\n          <div class=\"acc-title\">CH3-12\/250 Vent<\/div>\n          <ul class=\"acc-specs\">\n            <li><span>Current<\/span> <span>2500~3150A<\/span><\/li>\n            <li><span>Depth<\/span> <span>245.5 mm<\/span><\/li>\n            <li><span>Feature<\/span> <span>Air Cooling<\/span><\/li>\n          <\/ul>\n          <div class=\"acc-link\">View Specs &#038; Drawing<\/div>\n        <\/div>\n      <\/div>\n\n      <div class=\"acc-card\" data-category=\"12kv\" onclick=\"openDiagram('CH3-12\/270', '12kV', '4000A', '270 mm', '270\u00d7270 mm', 'Extreme Capacity 4kA', 'https:\/\/xbrele.com\/wp-content\/uploads\/2025\/11\/xbrele-extreme-capacity-contact-box-12kv-270-drawing.webp')\">\n        <div class=\"acc-img-wrap\">\n          <span class=\"acc-badge badge-12kv\">12kV<\/span>\n          <img decoding=\"async\" src=\"https:\/\/xbrele.com\/wp-content\/uploads\/2025\/11\/xbrele-extreme-capacity-contact-box-12kv-270.webp\" alt=\"XBRELE 4000A Extreme Capacity Square Contact Box CH3-270\">\n        <\/div>\n        <div class=\"acc-body\">\n          <div class=\"acc-title\">CH3-12\/270<\/div>\n          <ul class=\"acc-specs\">\n            <li><span>Current<\/span> <span>4000A<\/span><\/li>\n            <li><span>Depth<\/span> <span>270 mm<\/span><\/li>\n            <li><span>Size<\/span> <span>270\u00d7270 mm<\/span><\/li>\n          <\/ul>\n          <div class=\"acc-link\">View Specs &#038; Drawing<\/div>\n        <\/div>\n      <\/div>\n\n      <div class=\"acc-card\" data-category=\"12kv\" onclick=\"openDiagram('JYN2-12', '12kV', '630~1250A', '165 mm', '165\u00d7111 mm', 'Retrofit \/ JYN Type', 'https:\/\/xbrele.com\/wp-content\/uploads\/2025\/11\/xbrele-retrofit-contact-box-jyn2-12kv-drawing.webp')\">\n        <div class=\"acc-img-wrap\">\n          <span class=\"acc-badge badge-12kv\">12kV<\/span>\n          <img decoding=\"async\" src=\"https:\/\/xbrele.com\/wp-content\/uploads\/2025\/11\/xbrele-retrofit-contact-box-jyn2-12kv.webp\" alt=\"XBRELE Retrofit Contact Box JYN2-12kV for Old Style Cabinet\">\n        <\/div>\n        <div class=\"acc-body\">\n          <div class=\"acc-title\">JYN2-12 Classic<\/div>\n          <ul class=\"acc-specs\">\n            <li><span>Current<\/span> <span>630~1250A<\/span><\/li>\n            <li><span>Depth<\/span> <span>165 mm<\/span><\/li>\n            <li><span>App<\/span> <span>JYN Cabinet<\/span><\/li>\n          <\/ul>\n          <div class=\"acc-link\">View Specs &#038; Drawing<\/div>\n        <\/div>\n      <\/div>\n\n      <div class=\"acc-card\" data-category=\"24kv\" onclick=\"openDiagram('CH3-24\/225', '24kV', '630~1600A', '291 mm', '225\u00d7225 mm', '24kV Double Insulation', 'https:\/\/xbrele.com\/wp-content\/uploads\/2025\/11\/xbrele-24kv-insulation-contact-box-ch3-225-drawing.webp')\">\n        <div class=\"acc-img-wrap\">\n          <span class=\"acc-badge badge-24kv\">24kV<\/span>\n          <img decoding=\"async\" src=\"https:\/\/xbrele.com\/wp-content\/uploads\/2025\/11\/xbrele-24kv-insulation-contact-box-ch3-225.webp\" alt=\"XBRELE 24kV Double Insulation Contact Box CH3-225\">\n        <\/div>\n        <div class=\"acc-body\">\n          <div class=\"acc-title\">CH3-24\/225<\/div>\n          <ul class=\"acc-specs\">\n            <li><span>Current<\/span> <span>630~1600A<\/span><\/li>\n            <li><span>Depth<\/span> <span>291 mm<\/span><\/li>\n            <li><span>Size<\/span> <span>225\u00d7225 mm<\/span><\/li>\n          <\/ul>\n          <div class=\"acc-link\">View Specs &#038; Drawing<\/div>\n        <\/div>\n      <\/div>\n\n      <div class=\"acc-card\" data-category=\"24kv\" onclick=\"openDiagram('CH3-24\/250', '24kV', '2000~4000A', '296 mm', '250\u00d7250 mm', 'High Current 24kV', 'https:\/\/xbrele.com\/wp-content\/uploads\/2025\/11\/xbrele-24kv-heavy-contact-box-ch3-250-drawing.webp')\">\n        <div class=\"acc-img-wrap\">\n          <span class=\"acc-badge badge-24kv\">24kV<\/span>\n          <img decoding=\"async\" src=\"https:\/\/xbrele.com\/wp-content\/uploads\/2025\/11\/xbrele-24kv-heavy-contact-box-ch3-250.webp\" alt=\"XBRELE 24kV Heavy Duty Contact Box CH3-250\">\n        <\/div>\n        <div class=\"acc-body\">\n          <div class=\"acc-title\">CH3-24\/250<\/div>\n          <ul class=\"acc-specs\">\n            <li><span>Current<\/span> <span>2000~4000A<\/span><\/li>\n            <li><span>Depth<\/span> <span>296 mm<\/span><\/li>\n            <li><span>Size<\/span> <span>250\u00d7250 mm<\/span><\/li>\n          <\/ul>\n          <div class=\"acc-link\">View Specs &#038; Drawing<\/div>\n        <\/div>\n      <\/div>\n\n      <div class=\"acc-card\" data-category=\"40kv\" onclick=\"openDiagram('CH3-40.5 (2-Way)', '40.5kV', '1250~2500A', '660 mm', 'See Drawing', 'Improved 2-Way Structure', 'https:\/\/xbrele.com\/wp-content\/uploads\/2025\/11\/xbrele-40kv-contact-box-660-2way-drawing.webp')\">\n        <div class=\"acc-img-wrap\">\n          <span class=\"acc-badge badge-40kv\">40.5kV<\/span>\n          <img decoding=\"async\" src=\"https:\/\/xbrele.com\/wp-content\/uploads\/2025\/11\/xbrele-40kv-contact-box-660-2way.webp\" alt=\"XBRELE Improved 2-Way 40.5kV Contact Box for KYN61\">\n        <\/div>\n        <div class=\"acc-body\">\n          <div class=\"acc-title\">CH3-40.5 2-Way<\/div>\n          <ul class=\"acc-specs\">\n            <li><span>Current<\/span> <span>Standard<\/span><\/li>\n            <li><span>Depth<\/span> <span>660 mm<\/span><\/li>\n            <li><span>App<\/span> <span>KYN61<\/span><\/li>\n          <\/ul>\n          <div class=\"acc-link\">View Specs &#038; Drawing<\/div>\n        <\/div>\n      <\/div>\n\n      <div class=\"acc-card\" data-category=\"40kv\" onclick=\"openDiagram('CH3-40.5 (3-Way)', '40.5kV', '1250~2500A', '660 mm', 'See Drawing', 'Shielded 3-Way Structure', 'https:\/\/xbrele.com\/wp-content\/uploads\/2025\/11\/xbrele-40kv-contact-box-660-3way-drawing.webp')\">\n        <div class=\"acc-img-wrap\">\n          <span class=\"acc-badge badge-40kv\">40.5kV<\/span>\n          <img decoding=\"async\" src=\"https:\/\/xbrele.com\/wp-content\/uploads\/2025\/11\/xbrele-40kv-contact-box-660-3way.webp\" alt=\"XBRELE Shielded 3-Way 40.5kV Contact Box with Screen\">\n        <\/div>\n        <div class=\"acc-body\">\n          <div class=\"acc-title\">CH3-40.5 3-Way<\/div>\n          <ul class=\"acc-specs\">\n            <li><span>Current<\/span> <span>Standard<\/span><\/li>\n            <li><span>Depth<\/span> <span>660 mm<\/span><\/li>\n            <li><span>Type<\/span> <span>Shielded<\/span><\/li>\n          <\/ul>\n          <div class=\"acc-link\">View Specs &#038; Drawing<\/div>\n        <\/div>\n      <\/div>\n\n      <div class=\"acc-card\" data-category=\"40kv\" onclick=\"openDiagram('CH3-40.5 ABB', '40.5kV', '2500~4000A', '248 mm', 'See Drawing', 'Flat Structure', 'https:\/\/xbrele.com\/wp-content\/uploads\/2025\/11\/xbrele-40kv-contact-box-abb-type-drawing.webp')\">\n        <div class=\"acc-img-wrap\">\n          <span class=\"acc-badge badge-40kv\">40.5kV<\/span>\n          <img decoding=\"async\" src=\"https:\/\/xbrele.com\/wp-content\/uploads\/2025\/11\/xbrele-40kv-contact-box-abb-type.webp\" alt=\"XBRELE ABB Compatible 40.5kV Contact Box Flat Structure\">\n        <\/div>\n        <div class=\"acc-body\">\n          <div class=\"acc-title\">CH3-40.5 ABB<\/div>\n          <ul class=\"acc-specs\">\n            <li><span>Current<\/span> <span>2500~4000A<\/span><\/li>\n            <li><span>Structure<\/span> <span>Flat<\/span><\/li>\n            <li><span>Type<\/span> <span>ABB Type<\/span><\/li>\n          <\/ul>\n          <div class=\"acc-link\">View Specs &#038; Drawing<\/div>\n        <\/div>\n      <\/div>\n\n      <div class=\"acc-card\" data-category=\"40kv\" onclick=\"openDiagram('CH3-40.5 Slanted', '40.5kV', '1250~2500A', '583 mm', 'See Drawing', 'Oblique Mouth Design', 'https:\/\/xbrele.com\/wp-content\/uploads\/2025\/11\/xbrele-40kv-contact-box-slanted-drawing.webp')\">\n        <div class=\"acc-img-wrap\">\n          <span class=\"acc-badge badge-40kv\">40.5kV<\/span>\n          <img decoding=\"async\" src=\"https:\/\/xbrele.com\/wp-content\/uploads\/2025\/11\/xbrele-40kv-contact-box-slanted.webp\" alt=\"XBRELE Slanted Mouth 40.5kV Contact Box for Special Busbar\">\n        <\/div>\n        <div class=\"acc-body\">\n          <div class=\"acc-title\">CH3-40.5 Slanted<\/div>\n          <ul class=\"acc-specs\">\n            <li><span>Type<\/span> <span>Oblique<\/span><\/li>\n            <li><span>Depth<\/span> <span>583 mm<\/span><\/li>\n            <li><span>App<\/span> <span>Special Busbar<\/span><\/li>\n          <\/ul>\n          <div class=\"acc-link\">View Specs &#038; Drawing<\/div>\n        <\/div>\n      <\/div>\n\n    <\/div>\n  <\/div>\n\n  <div id=\"accModal\" class=\"diagram-modal\" onclick=\"closeModal(event)\">\n    <div class=\"modal-content\">\n      <span class=\"modal-close\" onclick=\"closeModal(event)\">&times;<\/span>\n      <div class=\"modal-img-col\">\n        <img decoding=\"async\" id=\"mImg\" src=\"\" alt=\"Technical Diagram\">\n      <\/div>\n      <div class=\"modal-data-col\">\n        <div class=\"modal-header\">\n          <h3 id=\"mTitle\" class=\"modal-title-lg\">&#8212;<\/h3>\n          <div class=\"modal-subtitle\">Epoxy Resin Contact Box Series<\/div>\n        <\/div>\n        \n        <div class=\"modal-body-scroll\">\n          <table class=\"modal-table\">\n            <tr><th>Rated Voltage<\/th><td id=\"mVolt\" class=\"highlight-val\">&#8212;<\/td><\/tr>\n            <tr><th>Rated Current<\/th><td id=\"mCurrent\">&#8212;<\/td><\/tr>\n            \n            <tr><th>Lightning Impulse (BIL)<\/th><td style=\"color:#0F172A; font-weight:700;\">75 kV (12kV) \/ 125 kV (24kV)<\/td><\/tr>\n            <tr><th>PF Withstand<\/th><td>42 kV (12kV) \/ 65 kV (24kV)<\/td><\/tr>\n            <tr><th>Partial Discharge<\/th><td>&lt; 5 pC<\/td><\/tr>\n\n            <tr><th>Depth (L)<\/th><td id=\"mSize\">&#8212;<\/td><\/tr>\n            <tr><th>Mounting Size (W\u00d7H)<\/th><td id=\"mDia\">&#8212;<\/td><\/tr>\n            <tr><th>Application Feature<\/th><td id=\"mApp\">&#8212;<\/td><\/tr>\n            <tr><th>Material<\/th><td>Epoxy Resin (APG)<\/td><\/tr>\n            <tr><th>Standard<\/th><td>IEC 60694 \/ GB 3906<\/td><\/tr>\n          <\/table>\n        <\/div>\n\n        <div class=\"modal-footer\">\n          <a href=\"https:\/\/xbrele.com\/contact\/\" class=\"footer-btn\">Download Drawing<\/a>\n        <\/div>\n      <\/div>\n    <\/div>\n  <\/div>\n\n  <script>\n    \/\/ Tab \u7b5b\u9009\u903b\u8f91 (\u9ed8\u8ba4\u663e\u793a 12kV)\n    function filterGrid(category, btn) {\n      const cards = document.querySelectorAll('.acc-card');\n      const btns = document.querySelectorAll('.acc-tab-btn');\n      \n      if(btn) {\n        btns.forEach(b => b.classList.remove('active'));\n        btn.classList.add('active');\n      }\n\n      cards.forEach(card => {\n        card.classList.remove('show');\n        if (category === 'all' || card.dataset.category === category) {\n          card.style.display = 'flex';\n          setTimeout(() => card.classList.add('show'), 10);\n        } else {\n          card.style.display = 'none';\n        }\n      });\n    }\n\n    \/\/ \u521d\u59cb\u5316\n    document.addEventListener('DOMContentLoaded', () => {\n      const defaultBtn = document.querySelector('.acc-tab-btn.active');\n      filterGrid('12kv', defaultBtn);\n    });\n\n    \/\/ \u5f39\u7a97\u903b\u8f91\n    const modal = document.getElementById('accModal');\n    const mImg = document.getElementById('mImg');\n    const mTitle = document.getElementById('mTitle');\n    const mVolt = document.getElementById('mVolt');\n    const mCurrent = document.getElementById('mCurrent');\n    const mSize = document.getElementById('mSize'); \/\/ Depth\n    const mDia = document.getElementById('mDia');   \/\/ Mounting Size\n    const mApp = document.getElementById('mApp');\n\n    function openDiagram(title, volt, current, depth, dia, app, imgSrc) {\n      mTitle.innerText = title;\n      mVolt.innerText = volt;\n      mCurrent.innerText = current;\n      mSize.innerText = depth;\n      mDia.innerText = dia;\n      mApp.innerText = app;\n      mImg.src = imgSrc;\n      \n      modal.classList.add('open');\n      document.body.style.overflow = 'hidden';\n    }\n\n    function closeModal(e) {\n      if (e.target.id === 'accModal' || e.target.classList.contains('modal-close')) {\n        modal.classList.remove('open');\n        document.body.style.overflow = 'auto';\n      }\n    }\n  <\/script>\n<\/section>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-stackable-columns alignfull stk-block-columns stk-block stk-96b2fda\" data-block-id=\"96b2fda\"><div class=\"stk-row stk-inner-blocks stk-block-content stk-content-align stk-96b2fda-column alignfull\">\n<div class=\"wp-block-stackable-column stk-block-column stk-column stk-block stk-6835866\" data-v=\"4\" data-block-id=\"6835866\"><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-6835866-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-6835866-inner-blocks\">\n<section id=\"sec4-contact-box-reliability\" style=\"background:#ffffff;padding:90px 0 100px;\">\n  <style>\n    \/* \u6837\u5f0f\u590d\u7528\uff0c\u4ec5\u66ff\u6362 ID *\/\n    #sec4-contact-box-reliability{font-family:system-ui,-apple-system,BlinkMacSystemFont,\"Segoe UI\",Arial,sans-serif;color:#0F172A;}\n    #sec4-contact-box-reliability .features-shell{max-width:1600px;margin:0 auto;padding:0 5vw;}\n    #sec4-contact-box-reliability .sec-header{max-width:820px;margin:0 auto 40px;text-align:center;}\n    #sec4-contact-box-reliability .kicker{text-transform:uppercase;letter-spacing:.16em;font-size:12px;font-weight:600;color:#38BDF8;margin-bottom:8px;}\n    #sec4-contact-box-reliability h2{font-size:28px;margin:0 0 10px;color:#0F172A;}\n    #sec4-contact-box-reliability .sec-header p{margin:0;font-size:15px;color:#4B5563;line-height:1.8;}\n\n    #sec4-contact-box-reliability .grid{\n      display:grid;\n      grid-template-columns:repeat(3,minmax(0,1fr));\n      gap:24px;\n      margin-top:40px;\n    }\n\n    #sec4-contact-box-reliability .card{\n      border-radius:20px;\n      border:1px solid #E5E7EB;\n      background:#F9FAFB;\n      padding:22px 22px 24px;\n      box-shadow:0 14px 32px rgba(15,23,42,.04);\n      display:flex;\n      flex-direction:column;\n      height:100%;\n    }\n\n    #sec4-contact-box-reliability .card h3{font-size:17px;margin:0 0 8px;color:#0F172A;}\n    #sec4-contact-box-reliability .card .tag{\n      display:inline-flex;\n      padding:3px 10px;\n      border-radius:999px;\n      font-size:11px;\n      letter-spacing:.12em;\n      text-transform:uppercase;\n      background:#0F172A;\n      color:#E5E7EB;\n      margin-bottom:12px;\n    }\n\n    #sec4-contact-box-reliability .card p{font-size:14px;color:#374151;line-height:1.8;margin:0 0 10px;}\n    #sec4-contact-box-reliability .card ul{list-style:none;padding:0;margin:6px 0 0;font-size:14px;color:#4B5563;}\n    #sec4-contact-box-reliability .card li{\n      position:relative;\n      padding-left:16px;\n      margin-bottom:6px;\n      line-height:1.7;\n    }\n    #sec4-contact-box-reliability .card li::before{\n      content:\"\";\n      position:absolute;\n      left:0;\n      top:8px;\n      width:6px;\n      height:6px;\n      border-radius:999px;\n      background:#38BDF8;\n    }\n\n    @media(max-width:1000px){\n      #sec4-contact-box-reliability .grid{grid-template-columns:repeat(2,minmax(0,1fr));}\n    }\n    @media(max-width:690px){\n      #sec4-contact-box-reliability .features-shell{padding:0 18px;}\n      #sec4-contact-box-reliability .grid{grid-template-columns:1fr;}\n      #sec4-contact-box-reliability h2{font-size:24px;}\n    }\n  <\/style>\n\n  <div class=\"features-shell\">\n    <div class=\"sec-header\">\n      <div class=\"kicker\">Engineered for Zero-Defect Insulation<\/div>\n      <h2>Core Technologies of XBRELE Epoxy Contact Box Series<\/h2>\n      <p>\n        XBRELE <strong>contact boxes<\/strong> (switchgear spouts) are manufactured using advanced APG (Automatic Pressure Gelation) technology, ensuring superior dielectric strength and void-free insulation structure. Our products meet rigorous international standards for <strong>Partial Discharge<\/strong> and <strong>Impulse Withstand Voltage<\/strong>, providing reliable isolation for 12-40.5kV switchgear. For more insulation components, visit our \n        <a href=\"https:\/\/xbrele.com\/switchgear-parts\/\" style=\"color:#2563EB;text-decoration:none;\">\n          Switchgear Parts pillar page\n        <\/a>.\n      <\/p>\n    <\/div>\n\n    <div class=\"grid\">\n\n      <article class=\"card\">\n        <span class=\"tag\">Insulation Quality<\/span>\n        <h3>Low Partial Discharge (PD &lt; 5pC)<\/h3>\n        <p>\n          Internal defects in epoxy insulation can lead to catastrophic failure. XBRELE <strong>contact boxes<\/strong> undergo strict PD testing to guarantee long-term reliability.\n        <\/p>\n        <ul>\n          <li><strong>Void-Free APG Casting:<\/strong> Advanced molding eliminates air pockets, ensuring a dense, homogeneous epoxy structure.<\/li>\n          <li><strong>Strict PD Limits:<\/strong> Every unit is tested to ensure Partial Discharge is <strong>less than 5pC<\/strong> at rated voltage.<\/li>\n          <li><strong>Extended Service Life:<\/strong> Low PD levels prevent insulation degradation, significantly extending the lifespan of your <strong>switchgear components<\/strong>.<\/li>\n        <\/ul>\n      <\/article>\n\n      <article class=\"card\">\n        <span class=\"tag\">Safety &#038; Protection<\/span>\n        <h3>High Impulse Withstand Voltage (BIL)<\/h3>\n        <p>\n          Designed to protect against lightning surges and switching transients, our <strong>epoxy contact boxes<\/strong> offer exceptional insulation margins.\n        <\/p>\n        <ul>\n          <li><strong>IEC 60694 Compliant:<\/strong> Meets or exceeds standard BIL requirements: 75kV (12kV), 125kV (24kV), and 185kV (40.5kV).<\/li>\n          <li><strong>High Creepage Distance:<\/strong> Optimized surface geometry ensures safe operation even in high-humidity or polluted environments.<\/li>\n          <li><strong>Reference Standard:<\/strong> Performance verified against \n            <a href=\"https:\/\/ieeexplore.ieee.org\/document\/4113799\" target=\"_blank\" rel=\"noopener\" style=\"color:#2563EB;text-decoration:none;\">\n              IEEE\/IEC standards\n            <\/a> for high-voltage switchgear insulation.\n          <\/li>\n        <\/ul>\n      <\/article>\n\n      <article class=\"card\">\n        <span class=\"tag\">Quality Assurance<\/span>\n        <h3>X-Ray Flaw Detection for Structural Integrity<\/h3>\n        <p>\n          Hidden cracks or poor bonding between copper inserts and epoxy can compromise safety. We use X-Ray technology to see what others can&#8217;t.\n        <\/p>\n        <ul>\n          <li><strong>Non-Destructive Testing (NDT):<\/strong> 100% X-Ray inspection detects internal fissures, bubbles, or insert misalignments.<\/li>\n          <li><strong>Precise Insert Bonding:<\/strong> Ensures robust mechanical connection between the <strong>static contact housing<\/strong> and the busbar system.<\/li>\n          <li><strong>Visual Verification:<\/strong> Guarantees that every <strong>contact spout<\/strong> leaving our factory is structurally sound and ready for installation.<\/li>\n        <\/ul>\n      <\/article>\n\n    <\/div>\n  <\/div>\n<\/section>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-stackable-columns alignfull stk-block-columns stk-block stk-bbc5fa0\" data-block-id=\"bbc5fa0\"><div class=\"stk-row stk-inner-blocks stk-block-content stk-content-align stk-bbc5fa0-column alignfull\">\n<div class=\"wp-block-stackable-column stk-block-column stk-column stk-block stk-fc0028e\" data-v=\"4\" data-block-id=\"fc0028e\"><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-fc0028e-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-fc0028e-inner-blocks\">\n<section id=\"sec5-contact-box-quality\" style=\"background:#0B1220;padding:72px 0 78px;color:#E5E7EB;\">\n  <style>\n    \/* \u6837\u5f0f\u590d\u7528\uff0c\u4ec5\u66ff\u6362 ID *\/\n    #sec5-contact-box-quality{font-family:system-ui,-apple-system,BlinkMacSystemFont,\"Segoe UI\",Arial,sans-serif;}\n    #sec5-contact-box-quality .quality-shell{max-width:1500px;margin:0 auto;padding:0 5vw;}\n    #sec5-contact-box-quality .sec-header{max-width:820px;margin:0 auto 32px;text-align:center;}\n    #sec5-contact-box-quality .kicker{text-transform:uppercase;letter-spacing:.16em;font-size:12px;font-weight:600;color:#38BDF8;margin-bottom:8px;}\n    #sec5-contact-box-quality h2{font-size:26px;margin:0 0 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.qa-label{font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:#93C5FD;margin-bottom:3px;}\n    #sec5-contact-box-quality .qa-card h3{font-size:15px;margin:0 0 4px;color:#E5F0FF;}\n    #sec5-contact-box-quality .qa-card p{font-size:13px;color:#CBD5F5;margin:0 0 4px;line-height:1.65;}\n    #sec5-contact-box-quality .qa-block{margin-top:10px;padding-top:10px;border-top:1px solid rgba(148,163,184,.35);}\n    #sec5-contact-box-quality .qa-block:first-of-type{margin-top:6px;padding-top:0;border-top:none;}\n    #sec5-contact-box-quality .qa-block h4{font-size:13.5px;margin:0 0 3px;color:#E5F0FF;}\n    #sec5-contact-box-quality .qa-block ul{list-style:none;padding:0;margin:0;font-size:12.5px;color:#E5E7EB;}\n    #sec5-contact-box-quality .qa-block li{position:relative;padding-left:12px;margin-bottom:2px;line-height:1.6;}\n    #sec5-contact-box-quality .qa-block li::before{\n      content:\"\";position:absolute;left:0;top:7px;\n      width:5px;height:5px;border-radius:999px;background:#38BDF8;\n    }\n    #sec5-contact-box-quality .qa-note{font-size:12px;color:#9CA3AF;margin-top:4px;}\n\n    @media(max-width:1000px){#sec5-contact-box-quality .grid{grid-template-columns:1fr;}}\n    @media(max-width:690px){\n      #sec5-contact-box-quality .quality-shell{padding:0 18px;}\n      #sec5-contact-box-quality h2{font-size:22px;}\n    }\n  <\/style>\n\n  <div class=\"quality-shell\">\n    <div class=\"sec-header\">\n      <div class=\"kicker\">Quality Control<\/div>\n      <h2>Manufacturing &#038; Testing of Epoxy Contact Box Series<\/h2>\n      <p>\n        XBRELE combines advanced <strong>APG (Automatic Pressure Gelation)<\/strong> casting, precision mold design, and rigorous 100% routine testing to ensure that our <strong>contact boxes<\/strong> (switchgear spouts) deliver zero-defect insulation performance for 12-40.5kV medium voltage switchgear.\n      <\/p>\n    <\/div>\n\n    <div class=\"grid\">\n      <article class=\"process-card\">\n        <h3>APG Casting &#038; Assembly Process<\/h3>\n        <p>\n          Our manufacturing line for <strong>epoxy resin components<\/strong> is optimized to eliminate internal voids, ensure high mechanical strength, and achieve precise dimensional tolerance for seamless KYN28\/UniGear integration.\n        <\/p>\n\n        <ul class=\"step-list\">\n\n          <li class=\"step\">\n            <div class=\"step-badge\">01<\/div>\n            <div>\n              <h4>Mold Preparation &#038; Pre-heating<\/h4>\n              <p>Molds are cleaned and pre-heated to precise temperatures. Copper inserts (static contact housings) are positioned with high accuracy to ensure alignment.<\/p>\n            <\/div>\n          <\/li>\n\n          <li class=\"step\">\n            <div class=\"step-badge\">02<\/div>\n            <div>\n              <h4>APG Vacuum Casting<\/h4>\n              <p>Epoxy resin is injected under vacuum and high pressure using <strong>APG technology<\/strong>. This eliminates air bubbles, ensuring high dielectric strength and < 5pC partial discharge.<\/p>\n            <\/div>\n          <\/li>\n\n          <li class=\"step\">\n            <div class=\"step-badge\">03<\/div>\n            <div>\n              <h4>Curing &#038; Demolding<\/h4>\n              <p>Controlled curing cycles prevent internal stress and micro-cracking. Once cured, the <strong>contact box<\/strong> is demolded and inspected for surface finish.<\/p>\n            <\/div>\n          <\/li>\n\n          <li class=\"step\">\n            <div class=\"step-badge\">04<\/div>\n            <div>\n              <h4>X-Ray Flaw Detection<\/h4>\n              <p>Every batch undergoes X-Ray inspection to verify the bonding between the copper insert and the epoxy matrix, ensuring no hidden structural defects.<\/p>\n            <\/div>\n          <\/li>\n\n          <li class=\"step\">\n            <div class=\"step-badge\">05<\/div>\n            <div>\n              <h4>Final Testing &#038; Packing<\/h4>\n              <p>Routine tests for dimension, withstand voltage, and visual appearance are conducted before the <strong>switchgear components<\/strong> are packed for shipment.<\/p>\n            <\/div>\n          <\/li>\n\n        <\/ul>\n      <\/article>\n\n      <section class=\"qa-card\">\n        <div class=\"qa-section\">\n          <div class=\"qa-label\">QA Standards<\/div>\n          <h3>Routine &#038; Type Tests<\/h3>\n          <p>\n            All <strong>contact boxes<\/strong> are tested in accordance with IEC 60694 \/ GB 3906 standards to guarantee safety and reliability in critical power distribution networks.\n          <\/p>\n        <\/div>\n\n        <div class=\"qa-block\">\n          <h4>Dielectric Performance<\/h4>\n          <ul>\n            <li><strong>Power Frequency Withstand Voltage:<\/strong> 42kV (1min) for 12kV units; 65kV for 24kV; 95kV for 40.5kV.<\/li>\n            <li><strong>Partial Discharge (PD) Test:<\/strong> Guaranteed < 5pC at 1.1x rated voltage to prevent insulation aging.<\/li>\n            <li><strong>Impulse Voltage (BIL):<\/strong> Verified to withstand lightning impulses up to 75kV-185kV (Peak).<\/li>\n          <\/ul>\n        <\/div>\n\n        <div class=\"qa-block\">\n          <h4>Mechanical &#038; Physical Properties<\/h4>\n          <ul>\n            <li><strong>Cantilever Load Test:<\/strong> Verifies the mechanical strength of the terminal to withstand busbar stress.<\/li>\n            <li><strong>Glass Transition Temperature (Tg):<\/strong> Ensures material stability under high operating temperatures.<\/li>\n            <li>\n              Test procedures reference guidance from\n              <a href=\"https:\/\/ieeexplore.ieee.org\/document\/4113799\" target=\"_blank\" rel=\"noopener\" style=\"color:#93C5FD;text-decoration:none;\">\n                IEEE\/IEC standards\n              <\/a>\n              for solid electrical insulation.\n            <\/li>\n          <\/ul>\n        <\/div>\n\n        <div class=\"qa-block\">\n          <h4>Dimensional Verification<\/h4>\n          <ul>\n            <li>Precision check of mounting hole centers and aperture diameters.<\/li>\n            <li>Verification of insert thread quality and depth.<\/li>\n            <li>Surface creepage distance measurement.<\/li>\n          <\/ul>\n          <div class=\"qa-note\">\n            For detailed test reports or to view other insulation products like bushings and insulators, please visit our\n            <a href=\"https:\/\/xbrele.com\/switchgear-parts\/\" style=\"color:#93C5FD;text-decoration:none;\">\n              Switchgear Parts pillar page\n            <\/a>.\n          <\/div>\n        <\/div>\n      <\/section>\n    <\/div>\n  <\/div>\n<\/section>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-stackable-columns alignfull stk-block-columns stk-block stk-5ee92b7\" data-block-id=\"5ee92b7\"><div class=\"stk-row stk-inner-blocks stk-block-content stk-content-align stk-5ee92b7-column alignfull\">\n<div class=\"wp-block-stackable-column stk-block-column stk-column stk-block stk-41e353a\" data-v=\"4\" data-block-id=\"41e353a\"><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-41e353a-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-41e353a-inner-blocks\">\n<section id=\"sec6-contact-box-delivery\" style=\"background:#F9FAFB;padding:88px 0 96px;\">\n  <style>\n    \/* \u6837\u5f0f\u590d\u7528\uff0c\u4ec5\u66ff\u6362 ID *\/\n    #sec6-contact-box-delivery{font-family:system-ui,-apple-system,BlinkMacSystemFont,\"Segoe UI\",Arial,sans-serif;color:#0F172A;}\n    #sec6-contact-box-delivery .delivery-shell{max-width:1600px;margin:0 auto;padding:0 5vw;}\n    #sec6-contact-box-delivery .sec-header{max-width:860px;margin:0 auto 40px;text-align:center;}\n    #sec6-contact-box-delivery .kicker{text-transform:uppercase;letter-spacing:.16em;font-size:12px;font-weight:600;color:#38BDF8;margin-bottom:8px;}\n    #sec6-contact-box-delivery h2{font-size:28px;margin:0 0 10px;color:#0F172A;}\n    #sec6-contact-box-delivery .sec-header p{margin:0;font-size:15px;color:#4B5563;line-height:1.8;}\n    #sec6-contact-box-delivery .grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}\n    #sec6-contact-box-delivery .card{border-radius:20px;border:1px solid #E5E7EB;background:#FFFFFF;padding:20px 20px 22px;box-shadow:0 16px 34px rgba(15,23,42,.04);display:flex;flex-direction:column;height:100%;}\n    #sec6-contact-box-delivery .card-label{font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:#6B7280;margin-bottom:6px;}\n    #sec6-contact-box-delivery .card h3{font-size:17px;margin:0 0 8px;color:#0F172A;}\n    #sec6-contact-box-delivery .card p{font-size:14px;color:#4B5563;line-height:1.8;margin:0 0 10px;}\n    #sec6-contact-box-delivery .card ul{list-style:none;padding:0;margin:4px 0 0;font-size:13.5px;color:#374151;}\n    #sec6-contact-box-delivery .card li{position:relative;padding-left:14px;margin-bottom:6px;line-height:1.7;}\n    #sec6-contact-box-delivery .card li::before{content:\"\";position:absolute;left:0;top:7px;width:6px;height:6px;border-radius:999px;background:#38BDF8;}\n    #sec6-contact-box-delivery .cta-row{margin-top:32px;display:flex;justify-content:center;}\n    #sec6-contact-box-delivery .cta-btn{display:inline-block;padding:11px 30px;border-radius:8px;background:#0F172A;color:#F9FAFB;font-size:15px;font-weight:600;text-decoration:none;letter-spacing:.03em;box-shadow:0 12px 28px rgba(15,23,42,.2);transition:all .25s ease;white-space:nowrap;}\n    #sec6-contact-box-delivery .cta-btn:hover{background:#1F2937;box-shadow:0 16px 32px rgba(15,23,42,.28);transform:translateY(-1px);}\n    @media(max-width:1000px){#sec6-contact-box-delivery .grid{grid-template-columns:repeat(2,minmax(0,1fr));}}\n    @media(max-width:690px){\n      #sec6-contact-box-delivery .delivery-shell{padding:0 18px;}\n      #sec6-contact-box-delivery .grid{grid-template-columns:1fr;}\n      #sec6-contact-box-delivery h2{font-size:24px;}\n    }\n  <\/style>\n\n  <div class=\"delivery-shell\">\n    <div class=\"sec-header\">\n      <div class=\"kicker\">Delivery &#038; Project Support<\/div>\n      <h2>Global Supply Chain for Switchgear Components<\/h2>\n      <p>\n        XBRELE ensures rapid delivery of <strong>12kV-40.5kV epoxy contact boxes<\/strong> and <strong>switchgear spouts<\/strong> to panel builders worldwide. We coordinate mold customization, secure packaging, and technical support for both OEM production and retrofit maintenance projects.\n      <\/p>\n    <\/div>\n\n    <div class=\"grid\">\n\n      <article class=\"card\">\n        <div class=\"card-label\">Fast Replacement<\/div>\n        <h3>Stock Availability for Standard Models<\/h3>\n        <p>\n          We maintain a strategic inventory of high-demand models like CH3-12\/150 and CH3-12\/250 to support urgent maintenance needs for KYN28\/UniGear panels.\n        <\/p>\n        <ul>\n          <li><strong>In-Stock Items:<\/strong> Ship within 3-5 days for standard 12kV contact boxes.<\/li>\n          <li><strong>Bulk OEM Orders:<\/strong> 15-20 days production lead time for large batches.<\/li>\n          <li><strong>Retrofit Kits:<\/strong> JYN2-12 and older <strong>static contact housing<\/strong> replacements available.<\/li>\n          <li><strong>Sample Policy:<\/strong> Express delivery for prototype verification.<\/li>\n        <\/ul>\n      <\/article>\n\n      <article class=\"card\">\n        <div class=\"card-label\">OEM Customization<\/div>\n        <h3>Mold Design for Special Busbar Systems<\/h3>\n        <p>\n          Beyond standard catalogs, XBRELE offers mold customization services to fit unique busbar geometries or specific <strong>medium voltage switchgear<\/strong> designs.\n        <\/p>\n        <ul>\n          <li><strong>Dimensional Adaptation:<\/strong> Custom mounting hole spacing and aperture diameters.<\/li>\n          <li><strong>Special Shapes:<\/strong> Slanted mouth, ABB-compatible flat structures, or shielded types.<\/li>\n          <li><strong>Insert Material:<\/strong> Copper or brass insert options based on conductivity requirements.<\/li>\n          <li><strong>Private Labeling:<\/strong> Custom laser marking for OEM brand partners.<\/li>\n        <\/ul>\n      <\/article>\n\n      <article class=\"card\">\n        <div class=\"card-label\">Export Packaging<\/div>\n        <h3>Secure Transport for Epoxy Components<\/h3>\n        <p>\n          Epoxy resin requires careful handling to prevent surface chipping. We use reinforced packaging to ensure every <strong>contact spout<\/strong> arrives in perfect condition.\n        <\/p>\n        <ul>\n          <li><strong>Individual Boxing:<\/strong> Each contact box is wrapped in foam and boxed separately.<\/li>\n          <li><strong>Palletization:<\/strong> Heavy-duty wooden pallets with shrink wrap for sea\/air freight.<\/li>\n          <li><strong>Impact Protection:<\/strong> Corner guards and internal cushioning to absorb transport shock.<\/li>\n          <li><strong>Documentation:<\/strong> Full test reports and COC included with every shipment.<\/li>\n        <\/ul>\n      <\/article>\n\n    <\/div>\n\n    <div class=\"cta-row\">\n      <a href=\"https:\/\/xbrele.com\/switchgear-parts\/\" class=\"cta-btn\">\n        Explore All Switchgear Parts\n      <\/a>\n    <\/div>\n  <\/div>\n<\/section>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-stackable-columns alignfull stk-block-columns stk-block stk-93ad074\" data-block-id=\"93ad074\"><div class=\"stk-row stk-inner-blocks stk-block-content stk-content-align stk-93ad074-column alignfull\">\n<div class=\"wp-block-stackable-column stk-block-column stk-column stk-block stk-5dfd2a8\" data-v=\"4\" data-block-id=\"5dfd2a8\"><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-5dfd2a8-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-5dfd2a8-inner-blocks\">\n<section id=\"sec7-contact-box-faq\" style=\"padding:80px 0 100px;background:#ffffff;\">\n  <style>\n    \/* \u6837\u5f0f\u590d\u7528\uff0c\u4ec5\u66ff\u6362 ID *\/\n    #sec7-contact-box-faq{font-family:system-ui,-apple-system,BlinkMacSystemFont,\"Segoe UI\",Arial,sans-serif;color:#0F172A;}\n    #sec7-contact-box-faq .faq-shell{max-width:1200px;margin:0 auto;padding:0 5vw;}\n    #sec7-contact-box-faq .faq-header{max-width:900px;margin:0 auto 48px;text-align:center;}\n    #sec7-contact-box-faq .faq-kicker{text-transform:uppercase;letter-spacing:.16em;font-size:12px;font-weight:600;background:#F0F9FF;padding:4px 12px;border-radius:99px;color:#0284C7;margin-bottom:10px;display:inline-block;}\n    #sec7-contact-box-faq h2{font-size:30px;margin:0 0 14px;color:#0F172A;line-height:1.2;}\n    #sec7-contact-box-faq .faq-header p{margin:0 auto;font-size:16px;color:#4B5563;line-height:1.7;max-width:750px;}\n    #sec7-contact-box-faq .faq-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;align-items:flex-start;}\n    #sec7-contact-box-faq details{border-radius:12px;border:1px solid #E2E8F0;background:#FFFFFF;padding:20px 24px;transition:all .2s ease;box-shadow:0 2px 4px rgba(0,0,0,0.02);}\n    #sec7-contact-box-faq details:hover{border-color:#CBD5E1;box-shadow:0 4px 12px rgba(0,0,0,0.04);}\n    #sec7-contact-box-faq details[open]{background:#F8FAFC;border-color:#CBD5E1;}\n    #sec7-contact-box-faq summary{list-style:none;cursor:pointer;font-size:16px;font-weight:600;color:#1E293B;display:flex;justify-content:space-between;align-items:center;line-height:1.5;}\n    #sec7-contact-box-faq summary::-webkit-details-marker{display:none;}\n    #sec7-contact-box-faq .faq-icon{flex-shrink:0;width:24px;height:24px;border-radius:99px;background:#F1F5F9;color:#64748B;display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:bold;margin-left:12px;}\n    #sec7-contact-box-faq details[open] .faq-icon{background:#2563EB;color:#FFFFFF;transform:rotate(45deg);}\n    #sec7-contact-box-faq .faq-answer{margin-top:12px;font-size:15px;color:#475569;line-height:1.75;}\n    @media(max-width:690px){\n      #sec7-contact-box-faq .faq-grid{grid-template-columns:1fr;}\n      #sec7-contact-box-faq h2{font-size:24px;}\n      #sec7-contact-box-faq details{padding:16px;}\n    }\n  <\/style>\n\n  <div class=\"faq-shell\">\n    <div class=\"faq-header\">\n      <div class=\"faq-kicker\">FAQ \u00b7 Epoxy Contact Box<\/div>\n      <h2>Common Questions About Switchgear Contact Boxes<\/h2>\n      <p>\n        Technical answers regarding <strong>contact box<\/strong> selection, material properties, partial discharge limits, and compatibility with <strong>KYN28<\/strong> and other medium voltage switchgear cabinets.\n      <\/p>\n    <\/div>\n\n    <div class=\"faq-grid\">\n      \n      <details open>\n        <summary>\n          <span>What is the function of a contact box in MV switchgear?<\/span>\n          <span class=\"faq-icon\">+<\/span>\n        <\/summary>\n        <div class=\"faq-answer\">\n          A <strong>contact box<\/strong> (also known as a <strong>switchgear spout<\/strong> or static contact housing) acts as an insulation barrier and support structure. It isolates the high-voltage static contacts from the grounded metal compartment, ensuring safe connection with the vacuum circuit breaker handcart in 12kV-40.5kV air-insulated switchgear.\n        <\/div>\n      <\/details>\n\n      <details>\n        <summary>\n          <span>Why use Epoxy Resin (APG) instead of other materials?<\/span>\n          <span class=\"faq-icon\">+<\/span>\n        <\/summary>\n        <div class=\"faq-answer\">\n          <strong>Epoxy resin<\/strong> molded via the <strong>APG (Automatic Pressure Gelation)<\/strong> process offers superior dielectric strength, mechanical toughness, and moisture resistance compared to porcelain or DMC. The void-free casting ensures low <strong>partial discharge<\/strong> (< 5pC), which is critical for the long-term reliability of medium voltage distribution equipment.\n        <\/div>\n      <\/details>\n\n      <details>\n        <summary>\n          <span>How do I choose the right contact box for KYN28 switchgear?<\/span>\n          <span class=\"faq-icon\">+<\/span>\n        <\/summary>\n        <div class=\"faq-answer\">\n          Selection depends on three factors: <strong>Rated Voltage<\/strong> (12kV vs 24kV), <strong>Rated Current<\/strong> (630A-1250A use standard CH3-150\/180; 1600A+ use CH3-250\/270), and the <strong>Pole Distance<\/strong> (150mm, 210mm, or 275mm) of your cabinet. XBRELE offers standard models compatible with most KYN28A-12 and UniGear ZS1 panels.\n        <\/div>\n      <\/details>\n\n      <details>\n        <summary>\n          <span>What causes partial discharge in contact boxes?<\/span>\n          <span class=\"faq-icon\">+<\/span>\n        <\/summary>\n        <div class=\"faq-answer\">\n          Partial discharge is often caused by internal air voids in the insulation or poor bonding between the copper insert and the epoxy. This can lead to eventual insulation breakdown. XBRELE prevents this by using X-Ray inspection and strict APG process controls, guaranteeing a PD level well below IEC standards.\n        <\/div>\n      <\/details>\n\n      <details>\n        <summary>\n          <span>Which standards do your contact boxes comply with?<\/span>\n          <span class=\"faq-icon\">+<\/span>\n        <\/summary>\n        <div class=\"faq-answer\">\n          Our products are designed and tested in accordance with <strong>IEC 60694<\/strong> (Common specifications for high-voltage switchgear) and <strong>GB 3906<\/strong>. This includes type tests for Lightning Impulse Withstand Voltage (BIL) and Power Frequency Withstand Voltage. For more details, refer to\n          <a href=\"https:\/\/webstore.iec.ch\/publication\/62444\" target=\"_blank\" rel=\"noopener\" style=\"color:#2563EB;text-decoration:underline;\">IEC 62271-1<\/a> standards.\n        <\/div>\n      <\/details>\n\n      <details>\n        <summary>\n          <span>Do you offer contact boxes for 40.5kV systems?<\/span>\n          <span class=\"faq-icon\">+<\/span>\n        <\/summary>\n        <div class=\"faq-answer\">\n          Yes, we manufacture heavy-duty <strong>40.5kV contact boxes<\/strong> (CH3-40.5 series) for KYN61 switchgear. These include 2-way and 3-way shielded designs suitable for high-voltage applications up to 2500A. View our full range on the\n          <a href=\"https:\/\/xbrele.com\/switchgear-parts\/\" style=\"color:#2563EB;text-decoration:underline;\">\n            Switchgear Parts pillar page\n          <\/a>.\n        <\/div>\n      <\/details>\n\n    <\/div>\n  <\/div>\n<\/section>\n<\/div><\/div><\/div>\n<\/div><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Switchgear Insulation Components Epoxy Contact Box Series (12kV &#8211; 40.5kV) XBRELE\u2019s Contact Boxes (also known as Switchgear Spouts or Static Contact Housings) are precision-molded using APG Epoxy Resin. Designed for KYN28 and UniGear panels, they ensure superior dielectric strength and PD &lt; 5pC reliability for Medium Voltage systems. APG Technology 12kV \/ 24kV \/ 40.5kV [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":1422,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_gspb_post_css":"","footnotes":""},"class_list":["post-1352","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}},"_links":{"self":[{"href":"https:\/\/xbrele.com\/es\/wp-json\/wp\/v2\/pages\/1352","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/xbrele.com\/es\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/xbrele.com\/es\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/xbrele.com\/es\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/xbrele.com\/es\/wp-json\/wp\/v2\/comments?post=1352"}],"version-history":[{"count":32,"href":"https:\/\/xbrele.com\/es\/wp-json\/wp\/v2\/pages\/1352\/revisions"}],"predecessor-version":[{"id":1710,"href":"https:\/\/xbrele.com\/es\/wp-json\/wp\/v2\/pages\/1352\/revisions\/1710"}],"up":[{"embeddable":true,"href":"https:\/\/xbrele.com\/es\/wp-json\/wp\/v2\/pages\/1422"}],"wp:attachment":[{"href":"https:\/\/xbrele.com\/es\/wp-json\/wp\/v2\/media?parent=1352"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}