{"id":686,"date":"2025-08-28T08:57:55","date_gmt":"2025-08-28T08:57:55","guid":{"rendered":"https:\/\/cnkuangya.com\/?page_id=686"},"modified":"2025-10-24T10:37:12","modified_gmt":"2025-10-24T10:37:12","slug":"dc-mcb","status":"publish","type":"page","link":"https:\/\/cnkuangya.com\/ar\/dc-mcb\/","title":{"rendered":"\u0642\u0627\u0637\u0639 \u062f\u0627\u0631\u0629 \u0627\u0644\u062a\u064a\u0627\u0631 \u0627\u0644\u0645\u0633\u062a\u0645\u0631"},"content":{"rendered":"\n\n\n<div class=\"wp-block-stackable-columns alignfull stk-block-columns stk-block stk-59a1e4e stk-block-background stk--has-background-overlay\" data-block-id=\"59a1e4e\"><style>.stk-59a1e4e {background-color:#000000 !important;background-image:url(https:\/\/cnkuangya.com\/wp-content\/uploads\/2025\/09\/banner-1.png) !important;background-size:custom !important;min-height:var(--stk--preset--block-height--none, 0px) !important;padding-top:var(--stk--preset--spacing--none, 0px) !important;padding-right:var(--stk--preset--spacing--none, 0px) !important;padding-bottom:var(--stk--preset--spacing--none, 0px) !important;padding-left:var(--stk--preset--spacing--none, 0px) !important;margin-top:var(--stk--preset--spacing--none, 0px) !important;}.stk-59a1e4e:before{background-color:#000000 !important;opacity:0.4 !important;}.stk-59a1e4e > .stk-separator__top .stk-separator__wrapper{transform:scaleX(1) !important;height:110px !important;}.stk-59a1e4e > .stk-separator__bottom .stk-separator__wrapper{height:201px !important;}<\/style><div class=\"stk-row stk-inner-blocks stk-block-content stk-content-align stk-59a1e4e-column\">\n<div class=\"wp-block-stackable-column stk-block-column stk-column stk-block stk-c21d6af\" data-v=\"4\" data-block-id=\"c21d6af\"><style>.stk-c21d6af {margin-top:var(--stk--preset--spacing--none, 0px) !important;margin-bottom:var(--stk--preset--spacing--none, 0px) !important;}<\/style><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-c21d6af-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-c21d6af-inner-blocks\">\n<!-- ===== Hero Section (Tight Spacing, White Text) ===== -->\n<section class=\"hero-section\">\n  <div class=\"hero-container\">\n    <h1>\n      <span class=\"highlight\">DC MCB<\/span> (Miniature Circuit Breaker) for \n      <span class=\"highlight\">Solar, ESS &#038; EV<\/span> Systems\n    <\/h1>\n    <p class=\"hero-sub\">\n      Safe and reliable DC circuit protection up to <strong>1000V \/ 125A<\/strong>\n    <\/p>\n\n    <ul class=\"hero-list\">\n      <li>Wide range: 1P to 4P, up to <strong>1000V \/ 125A<\/strong><\/li>\n      <li>Safe arc extinguishing for DC circuits<\/li>\n      <li>Ideal for <span class=\"highlight\">Solar PV, ESS<\/span>, and <span class=\"highlight\">EV charging<\/span><\/li>\n      <li>Compliant with \n        <a href=\"https:\/\/webstore.iec.ch\/publication\/6028\" target=\"_blank\" rel=\"noopener\">IEC 60947-2<\/a> \/ \n        <a href=\"https:\/\/standardscatalog.ul.com\/standards\/en\/standard_489\" target=\"_blank\" rel=\"noopener\">UL standards<\/a>\n      <\/li>\n    <\/ul>\n\n    <div class=\"hero-buttons\">\n      <a href=\"#models\" class=\"btn btn-outline\">Compare Models<\/a>\n      <a href=\"\/contact-us\" class=\"btn btn-solid\">Get Quote<\/a>\n    <\/div>\n  <\/div>\n<\/section>\n\n<!-- ===== CSS ===== -->\n<style>\n.hero-section {\n  margin: 0 !important;\n  padding: 40px 20px !important; \/* \u63a7\u5236\u4e0a\u4e0b\u95f4\u8ddd *\/\n  background: url('https:\/\/cnkuangya.com\/wp-content\/uploads\/2025\/09\/hero-bg.jpg') center\/cover no-repeat;\n  color: #fff; \/* \u4fdd\u6301\u5168\u5c40\u6587\u5b57\u4e3a\u767d\u8272 *\/\n  text-align: left;\n}\n.hero-container {\n  max-width: 1200px;\n  margin: 0 auto;\n}\n.hero-section h1 {\n  font-size: 36px;\n  font-weight: 700;\n  margin-bottom: 20px;\n  color: #fff; \/* \u5f3a\u5236\u767d\u8272 *\/\n}\n.hero-sub {\n  font-size: 18px;\n  margin-bottom: 20px;\n  color: #f3f4f6; \/* \u6d45\u7070\uff0c\u4e0d\u662f\u9ed1 *\/\n}\n.hero-list {\n  list-style: none;\n  margin: 0 0 20px;\n  padding: 0;\n}\n.hero-list li {\n  margin-bottom: 8px;\n  font-size: 16px;\n  color: #fff; \/* \u4fdd\u6301\u767d\u8272 *\/\n}\n.hero-list a {\n  color: #FD5732; \/* \u7ea2\u8272\u9ad8\u4eae\u94fe\u63a5 *\/\n  text-decoration: underline;\n}\n.hero-buttons {\n  display: flex;\n  gap: 12px;\n}\n.btn {\n  display: inline-block;\n  padding: 10px 22px;\n  border-radius: 6px;\n  font-weight: 600;\n  transition: .2s;\n}\n.btn-outline {\n  border: 2px solid #FD5732;\n  color: #FD5732;\n  background: transparent;\n}\n.btn-outline:hover {\n  background: #FD5732;\n  color: #fff;\n}\n.btn-solid {\n  background: linear-gradient(90deg, #B5220E, #FD5732);\n  border: none;\n  color: #fff;\n}\n.btn-solid:hover {\n  opacity: .9;\n}\n.highlight { color: #FD5732; font-weight: 700; }\n<\/style>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n<div data-wp-context=\"{&quot;notices&quot;:[],&quot;hideNextPreviousButtons&quot;:false,&quot;isDisabledPrevious&quot;:true,&quot;isDisabledNext&quot;:false,&quot;ariaLabelPrevious&quot;:&quot;\\u0627\\u0644\\u0645\\u0646\\u062a\\u062c\\u0627\\u062a \\u0627\\u0644\\u0633\\u0627\\u0628\\u0642\\u0629&quot;,&quot;ariaLabelNext&quot;:&quot;\\u0627\\u0644\\u0645\\u0646\\u062a\\u062c\\u0627\\u062a \\u0627\\u0644\\u062a\\u0627\\u0644\\u064a\\u0629&quot;,&quot;collection&quot;:&quot;woocommerce\\\/product-collection\\\/hand-picked&quot;}\" data-wp-init=\"callbacks.onRender\" data-wp-interactive=\"woocommerce\/product-collection\" data-wp-router-region=\"wc-product-collection-0\" data-__private-preview-state=\"{&quot;isPreview&quot;:false,&quot;previewMessage&quot;:&quot;Actual products will vary depending on the page being viewed.&quot;}\" data-block-name=\"woocommerce\/product-collection\" data-collection=\"woocommerce\/product-collection\/hand-picked\" data-dimensions=\"{&quot;widthType&quot;:&quot;fill&quot;}\" data-display-layout=\"{&quot;type&quot;:&quot;flex&quot;,&quot;columns&quot;:6,&quot;shrinkColumns&quot;:true}\" data-hide-controls=\"[&quot;inherit&quot;,&quot;hand-picked&quot;,&quot;filterable&quot;,&quot;order&quot;]\" data-query-context-includes=\"[&quot;collection&quot;]\" data-query-id=\"0\" data-query=\"{&quot;perPage&quot;:9,&quot;pages&quot;:0,&quot;offset&quot;:0,&quot;postType&quot;:&quot;product&quot;,&quot;order&quot;:&quot;asc&quot;,&quot;orderBy&quot;:&quot;post__in&quot;,&quot;search&quot;:&quot;&quot;,&quot;exclude&quot;:[],&quot;inherit&quot;:false,&quot;taxQuery&quot;:[],&quot;isProductCollectionBlock&quot;:true,&quot;featured&quot;:false,&quot;woocommerceOnSale&quot;:false,&quot;woocommerceStockStatus&quot;:[&quot;instock&quot;,&quot;outofstock&quot;,&quot;onbackorder&quot;],&quot;woocommerceAttributes&quot;:[],&quot;woocommerceHandPickedProducts&quot;:[&quot;1101&quot;,&quot;1105&quot;,&quot;1118&quot;,&quot;1109&quot;,&quot;1112&quot;,&quot;1115&quot;,&quot;1107&quot;,&quot;1120&quot;],&quot;filterable&quot;:false,&quot;relatedBy&quot;:{&quot;categories&quot;:true,&quot;tags&quot;:true}}\" data-tag-name=\"div\" class=\"wp-block-woocommerce-product-collection is-layout-flow wp-block-woocommerce-product-collection-is-layout-flow\">\t\t<div data-wp-interactive=\"woocommerce\/store-notices\" class=\"wc-block-components-notices alignwide\">\n\t\t\t<template data-wp-each--notice=\"state.notices\" data-wp-each-key=\"context.notice.id\">\n\t\t\t\t<div\n\t\t\t\t\tclass=\"wc-block-components-notice-banner\"\n\t\t\t\t\tdata-wp-init=\"callbacks.scrollIntoView\"\n\t\t\t\t\tdata-wp-class--is-error=\"state.isError\"\n\t\t\t\t\tdata-wp-class--is-success=\"state.isSuccess\"\n\t\t\t\t\tdata-wp-class--is-info=\"state.isInfo\"\n\t\t\t\t\tdata-wp-class--is-dismissible=\"context.notice.dismissible\"\n\t\t\t\t\tdata-wp-bind--role=\"state.role\"\n\t\t\t\t\tdata-wp-watch=\"callbacks.injectIcon\"\n\t\t\t\t>\n\t\t\t\t\t<div class=\"wc-block-components-notice-banner__content\">\n\t\t\t\t\t\t<span data-wp-init=\"callbacks.renderNoticeContent\" aria-live=\"assertive\" aria-atomic=\"true\"><\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<button\n\t\t\t\t\t\tdata-wp-bind--hidden=\"!context.notice.dismissible\"\n\t\t\t\t\t\tclass=\"wc-block-components-button wp-element-button wc-block-components-notice-banner__dismiss contained\"\n\t\t\t\t\t\taria-label=\"\u0625\u062e\u0641\u0627\u0621 \u0647\u0630\u0647 \u0627\u0644\u0645\u0644\u0627\u062d\u0638\u0629\"\n\t\t\t\t\t\tdata-wp-on--click=\"actions.removeNotice\"\n\t\t\t\t\t>\n\t\t\t\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 24 24\">\n\t\t\t\t\t\t\t<path d=\"M13 11.8l6.1-6.3-1-1-6.1 6.2-6.1-6.2-1 1 6.1 6.3-6.5 6.7 1 1 6.5-6.6 6.5 6.6 1-1z\" \/>\n\t\t\t\t\t\t<\/svg>\n\t\t\t\t\t<\/button>\n\t\t\t\t<\/div>\n\t\t\t<\/template>\n\t\t<\/div>\n\t\t\n<h2 class=\"wp-block-heading has-text-align-center\" style=\"margin-bottom:1rem\">Choose Your&nbsp;DC MCB&nbsp;Model<br><\/h2>\n\n\n<ul data-block-name=\"woocommerce\/product-template\" class=\"wc-block-product-template__responsive columns-6 wc-block-product-template wp-block-woocommerce-product-template is-layout-flow wp-block-woocommerce-product-template-is-layout-flow\" data-wp-on--scroll=\"actions.watchScroll\" data-wp-init=\"callbacks.initResizeObserver\"><li class=\"wc-block-product post-1101 product type-product status-publish has-post-thumbnail product_cat-dc-mcb first instock shipping-taxable product-type-simple\"\n\t\t\t\t\t\n\t\t\t\tdata-wp-interactive=\"woocommerce\/product-collection\"\n\t\t\t\tdata-wp-context='{\"productId\":1101}'\n\t\t\t\tdata-wp-key=\"product-item-1101\"\n\t\t\t\n\t\t\t\t>\n\t\t\t\t\t\n<div data-block-name=\"woocommerce\/product-image\" data-image-sizing=\"thumbnail\" data-is-descendent-of-query-loop=\"true\" data-show-sale-badge=\"false\" class=\"wc-block-components-product-image wc-block-grid__product-image wc-block-components-product-image--aspect-ratio-auto wp-block-woocommerce-product-image\"><a href=\"https:\/\/cnkuangya.com\/ar\/product\/dc-circuit-breaker-1p-250v-kydb63\/\" style=\"\" data-wp-on--click=\"woocommerce\/product-collection::actions.viewProduct\"><img decoding=\"async\" width=\"300\" height=\"300\" src=\"https:\/\/cnkuangya.com\/wp-content\/uploads\/2025\/09\/1-300x300.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"dc circuit breaker 1p 250v\" data-testid=\"product-image\" data-image-id=\"2064\" style=\"object-fit:cover;\" loading=\"lazy\" srcset=\"https:\/\/cnkuangya.com\/wp-content\/uploads\/2025\/09\/1-300x300.webp 300w, https:\/\/cnkuangya.com\/wp-content\/uploads\/2025\/09\/1-150x150.webp 150w, https:\/\/cnkuangya.com\/wp-content\/uploads\/2025\/09\/1-768x768.webp 768w, https:\/\/cnkuangya.com\/wp-content\/uploads\/2025\/09\/1-12x12.webp 12w, https:\/\/cnkuangya.com\/wp-content\/uploads\/2025\/09\/1-600x600.webp 600w, https:\/\/cnkuangya.com\/wp-content\/uploads\/2025\/09\/1-100x100.webp 100w, https:\/\/cnkuangya.com\/wp-content\/uploads\/2025\/09\/1.webp 800w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><div class=\"wc-block-components-product-image__inner-container\">\n\n<\/div><\/a><\/div>\n\n<h2 style=\"font-size:clamp(14px, 0.875rem + ((1vw - 3.2px) * 0.313), 18px);line-height:1.4; margin-bottom:0.75rem;margin-top:0;\" class=\"has-text-align-center wp-block-post-title\"><a data-wp-on--click=\"woocommerce\/product-collection::actions.viewProduct\" href=\"https:\/\/cnkuangya.com\/ar\/product\/dc-circuit-breaker-1p-250v-kydb63\/\" target=\"_self\">DC Circuit Breaker 1P 250V | KYDB-63-1P<\/a><\/h2>\n\n\t\t\t\t<\/li><li class=\"wc-block-product post-1105 product type-product status-publish has-post-thumbnail product_cat-dc-mcb  instock shipping-taxable product-type-simple\"\n\t\t\t\t\t\n\t\t\t\tdata-wp-interactive=\"woocommerce\/product-collection\"\n\t\t\t\tdata-wp-context='{\"productId\":1105}'\n\t\t\t\tdata-wp-key=\"product-item-1105\"\n\t\t\t\n\t\t\t\t>\n\t\t\t\t\t\n<div data-block-name=\"woocommerce\/product-image\" data-image-sizing=\"thumbnail\" data-is-descendent-of-query-loop=\"true\" data-show-sale-badge=\"false\" class=\"wc-block-components-product-image wc-block-grid__product-image wc-block-components-product-image--aspect-ratio-auto wp-block-woocommerce-product-image\"><a href=\"https:\/\/cnkuangya.com\/ar\/product\/dc-circuit-breaker-2p-500v-kydb63\/\" style=\"\" data-wp-on--click=\"woocommerce\/product-collection::actions.viewProduct\"><img decoding=\"async\" width=\"300\" height=\"300\" src=\"https:\/\/cnkuangya.com\/wp-content\/uploads\/2025\/09\/1-1-300x300.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"dc circuit breaker 2p 500v\" data-testid=\"product-image\" data-image-id=\"2069\" style=\"object-fit:cover;\" loading=\"lazy\" srcset=\"https:\/\/cnkuangya.com\/wp-content\/uploads\/2025\/09\/1-1-300x300.webp 300w, https:\/\/cnkuangya.com\/wp-content\/uploads\/2025\/09\/1-1-150x150.webp 150w, https:\/\/cnkuangya.com\/wp-content\/uploads\/2025\/09\/1-1-768x768.webp 768w, https:\/\/cnkuangya.com\/wp-content\/uploads\/2025\/09\/1-1-12x12.webp 12w, https:\/\/cnkuangya.com\/wp-content\/uploads\/2025\/09\/1-1-600x600.webp 600w, https:\/\/cnkuangya.com\/wp-content\/uploads\/2025\/09\/1-1-100x100.webp 100w, https:\/\/cnkuangya.com\/wp-content\/uploads\/2025\/09\/1-1.webp 800w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><div class=\"wc-block-components-product-image__inner-container\">\n\n<\/div><\/a><\/div>\n\n<h2 style=\"font-size:clamp(14px, 0.875rem + ((1vw - 3.2px) * 0.313), 18px);line-height:1.4; margin-bottom:0.75rem;margin-top:0;\" class=\"has-text-align-center wp-block-post-title\"><a data-wp-on--click=\"woocommerce\/product-collection::actions.viewProduct\" href=\"https:\/\/cnkuangya.com\/ar\/product\/dc-circuit-breaker-2p-500v-kydb63\/\" target=\"_self\">DC Circuit Breaker 2P 500V | KYDB-63-2P<\/a><\/h2>\n\n\t\t\t\t<\/li><li class=\"wc-block-product post-1118 product type-product status-publish has-post-thumbnail product_cat-dc-mcb  instock shipping-taxable product-type-simple\"\n\t\t\t\t\t\n\t\t\t\tdata-wp-interactive=\"woocommerce\/product-collection\"\n\t\t\t\tdata-wp-context='{\"productId\":1118}'\n\t\t\t\tdata-wp-key=\"product-item-1118\"\n\t\t\t\n\t\t\t\t>\n\t\t\t\t\t\n<div data-block-name=\"woocommerce\/product-image\" data-image-sizing=\"thumbnail\" data-is-descendent-of-query-loop=\"true\" data-show-sale-badge=\"false\" class=\"wc-block-components-product-image wc-block-grid__product-image wc-block-components-product-image--aspect-ratio-auto wp-block-woocommerce-product-image\"><a href=\"https:\/\/cnkuangya.com\/ar\/product\/dc-circuit-breaker-3p-750v-125a-kydb125\/\" style=\"\" data-wp-on--click=\"woocommerce\/product-collection::actions.viewProduct\"><img decoding=\"async\" width=\"300\" height=\"300\" src=\"https:\/\/cnkuangya.com\/wp-content\/uploads\/2025\/09\/1-6-300x300.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"dc circuit breaker 3p 750v 125a\" data-testid=\"product-image\" data-image-id=\"2096\" style=\"object-fit:cover;\" loading=\"lazy\" srcset=\"https:\/\/cnkuangya.com\/wp-content\/uploads\/2025\/09\/1-6-300x300.webp 300w, https:\/\/cnkuangya.com\/wp-content\/uploads\/2025\/09\/1-6-150x150.webp 150w, https:\/\/cnkuangya.com\/wp-content\/uploads\/2025\/09\/1-6-768x768.webp 768w, https:\/\/cnkuangya.com\/wp-content\/uploads\/2025\/09\/1-6-12x12.webp 12w, https:\/\/cnkuangya.com\/wp-content\/uploads\/2025\/09\/1-6-600x600.webp 600w, https:\/\/cnkuangya.com\/wp-content\/uploads\/2025\/09\/1-6-100x100.webp 100w, https:\/\/cnkuangya.com\/wp-content\/uploads\/2025\/09\/1-6.webp 800w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><div class=\"wc-block-components-product-image__inner-container\">\n\n<\/div><\/a><\/div>\n\n<h2 style=\"font-size:clamp(14px, 0.875rem + ((1vw - 3.2px) * 0.313), 18px);line-height:1.4; margin-bottom:0.75rem;margin-top:0;\" class=\"has-text-align-center wp-block-post-title\"><a data-wp-on--click=\"woocommerce\/product-collection::actions.viewProduct\" href=\"https:\/\/cnkuangya.com\/ar\/product\/dc-circuit-breaker-3p-750v-125a-kydb125\/\" target=\"_self\">DC Circuit Breaker 3P 750V 125A | KYDB-125-3P<\/a><\/h2>\n\n\t\t\t\t<\/li><li class=\"wc-block-product post-1109 product type-product status-publish has-post-thumbnail product_cat-dc-mcb last instock shipping-taxable product-type-simple\"\n\t\t\t\t\t\n\t\t\t\tdata-wp-interactive=\"woocommerce\/product-collection\"\n\t\t\t\tdata-wp-context='{\"productId\":1109}'\n\t\t\t\tdata-wp-key=\"product-item-1109\"\n\t\t\t\n\t\t\t\t>\n\t\t\t\t\t\n<div data-block-name=\"woocommerce\/product-image\" data-image-sizing=\"thumbnail\" data-is-descendent-of-query-loop=\"true\" data-show-sale-badge=\"false\" class=\"wc-block-components-product-image wc-block-grid__product-image wc-block-components-product-image--aspect-ratio-auto wp-block-woocommerce-product-image\"><a href=\"https:\/\/cnkuangya.com\/ar\/product\/dc-circuit-breaker-4p-1000v-kydb63\/\" style=\"\" data-wp-on--click=\"woocommerce\/product-collection::actions.viewProduct\"><img decoding=\"async\" width=\"300\" height=\"300\" src=\"https:\/\/cnkuangya.com\/wp-content\/uploads\/2025\/09\/1-3-300x300.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"dc circuit breaker 4p 1000v\" data-testid=\"product-image\" data-image-id=\"2079\" style=\"object-fit:cover;\" loading=\"lazy\" srcset=\"https:\/\/cnkuangya.com\/wp-content\/uploads\/2025\/09\/1-3-300x300.webp 300w, https:\/\/cnkuangya.com\/wp-content\/uploads\/2025\/09\/1-3-150x150.webp 150w, https:\/\/cnkuangya.com\/wp-content\/uploads\/2025\/09\/1-3-768x768.webp 768w, https:\/\/cnkuangya.com\/wp-content\/uploads\/2025\/09\/1-3-12x12.webp 12w, https:\/\/cnkuangya.com\/wp-content\/uploads\/2025\/09\/1-3-600x600.webp 600w, https:\/\/cnkuangya.com\/wp-content\/uploads\/2025\/09\/1-3-100x100.webp 100w, https:\/\/cnkuangya.com\/wp-content\/uploads\/2025\/09\/1-3.webp 800w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><div class=\"wc-block-components-product-image__inner-container\">\n\n<\/div><\/a><\/div>\n\n<h2 style=\"font-size:clamp(14px, 0.875rem + ((1vw - 3.2px) * 0.313), 18px);line-height:1.4; margin-bottom:0.75rem;margin-top:0;\" class=\"has-text-align-center wp-block-post-title\"><a data-wp-on--click=\"woocommerce\/product-collection::actions.viewProduct\" href=\"https:\/\/cnkuangya.com\/ar\/product\/dc-circuit-breaker-4p-1000v-kydb63\/\" target=\"_self\">DC Circuit Breaker 4P 1000V | KYDB-63-4P<\/a><\/h2>\n\n\t\t\t\t<\/li><li class=\"wc-block-product post-1112 product type-product status-publish has-post-thumbnail product_cat-dc-mcb first instock shipping-taxable product-type-simple\"\n\t\t\t\t\t\n\t\t\t\tdata-wp-interactive=\"woocommerce\/product-collection\"\n\t\t\t\tdata-wp-context='{\"productId\":1112}'\n\t\t\t\tdata-wp-key=\"product-item-1112\"\n\t\t\t\n\t\t\t\t>\n\t\t\t\t\t\n<div data-block-name=\"woocommerce\/product-image\" data-image-sizing=\"thumbnail\" data-is-descendent-of-query-loop=\"true\" data-show-sale-badge=\"false\" class=\"wc-block-components-product-image wc-block-grid__product-image wc-block-components-product-image--aspect-ratio-auto wp-block-woocommerce-product-image\"><a href=\"https:\/\/cnkuangya.com\/ar\/product\/dc-circuit-breaker-1p-250v-125a-kydb125\/\" style=\"\" data-wp-on--click=\"woocommerce\/product-collection::actions.viewProduct\"><img decoding=\"async\" width=\"300\" height=\"300\" src=\"https:\/\/cnkuangya.com\/wp-content\/uploads\/2025\/09\/6-300x300.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"dc circuit breaker 1p 250v 125a\" data-testid=\"product-image\" data-image-id=\"2089\" style=\"object-fit:cover;\" loading=\"lazy\" srcset=\"https:\/\/cnkuangya.com\/wp-content\/uploads\/2025\/09\/6-300x300.webp 300w, https:\/\/cnkuangya.com\/wp-content\/uploads\/2025\/09\/6-150x150.webp 150w, https:\/\/cnkuangya.com\/wp-content\/uploads\/2025\/09\/6-768x768.webp 768w, https:\/\/cnkuangya.com\/wp-content\/uploads\/2025\/09\/6-12x12.webp 12w, https:\/\/cnkuangya.com\/wp-content\/uploads\/2025\/09\/6-600x600.webp 600w, https:\/\/cnkuangya.com\/wp-content\/uploads\/2025\/09\/6-100x100.webp 100w, https:\/\/cnkuangya.com\/wp-content\/uploads\/2025\/09\/6.webp 800w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><div class=\"wc-block-components-product-image__inner-container\">\n\n<\/div><\/a><\/div>\n\n<h2 style=\"font-size:clamp(14px, 0.875rem + ((1vw - 3.2px) * 0.313), 18px);line-height:1.4; margin-bottom:0.75rem;margin-top:0;\" class=\"has-text-align-center wp-block-post-title\"><a data-wp-on--click=\"woocommerce\/product-collection::actions.viewProduct\" href=\"https:\/\/cnkuangya.com\/ar\/product\/dc-circuit-breaker-1p-250v-125a-kydb125\/\" target=\"_self\">DC Circuit Breaker 1P 250V 125A | KYDB-125-1P<\/a><\/h2>\n\n\t\t\t\t<\/li><li class=\"wc-block-product post-1115 product type-product status-publish has-post-thumbnail product_cat-dc-mcb  instock shipping-taxable product-type-simple\"\n\t\t\t\t\t\n\t\t\t\tdata-wp-interactive=\"woocommerce\/product-collection\"\n\t\t\t\tdata-wp-context='{\"productId\":1115}'\n\t\t\t\tdata-wp-key=\"product-item-1115\"\n\t\t\t\n\t\t\t\t>\n\t\t\t\t\t\n<div data-block-name=\"woocommerce\/product-image\" data-image-sizing=\"thumbnail\" data-is-descendent-of-query-loop=\"true\" data-show-sale-badge=\"false\" class=\"wc-block-components-product-image wc-block-grid__product-image wc-block-components-product-image--aspect-ratio-auto wp-block-woocommerce-product-image\"><a href=\"https:\/\/cnkuangya.com\/ar\/product\/dc-circuit-breaker-2p-500v-125a-kydb125\/\" style=\"\" data-wp-on--click=\"woocommerce\/product-collection::actions.viewProduct\"><img decoding=\"async\" width=\"300\" height=\"300\" src=\"https:\/\/cnkuangya.com\/wp-content\/uploads\/2025\/09\/1-5-300x300.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"dc circuit breaker 2p 500v 125a\" data-testid=\"product-image\" data-image-id=\"2090\" style=\"object-fit:cover;\" loading=\"lazy\" srcset=\"https:\/\/cnkuangya.com\/wp-content\/uploads\/2025\/09\/1-5-300x300.webp 300w, https:\/\/cnkuangya.com\/wp-content\/uploads\/2025\/09\/1-5-150x150.webp 150w, https:\/\/cnkuangya.com\/wp-content\/uploads\/2025\/09\/1-5-768x768.webp 768w, https:\/\/cnkuangya.com\/wp-content\/uploads\/2025\/09\/1-5-12x12.webp 12w, https:\/\/cnkuangya.com\/wp-content\/uploads\/2025\/09\/1-5-600x600.webp 600w, https:\/\/cnkuangya.com\/wp-content\/uploads\/2025\/09\/1-5-100x100.webp 100w, https:\/\/cnkuangya.com\/wp-content\/uploads\/2025\/09\/1-5.webp 800w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><div class=\"wc-block-components-product-image__inner-container\">\n\n<\/div><\/a><\/div>\n\n<h2 style=\"font-size:clamp(14px, 0.875rem + ((1vw - 3.2px) * 0.313), 18px);line-height:1.4; margin-bottom:0.75rem;margin-top:0;\" class=\"has-text-align-center wp-block-post-title\"><a data-wp-on--click=\"woocommerce\/product-collection::actions.viewProduct\" href=\"https:\/\/cnkuangya.com\/ar\/product\/dc-circuit-breaker-2p-500v-125a-kydb125\/\" target=\"_self\">DC Circuit Breaker 2P 500V 125A | KYDB-125-2P<\/a><\/h2>\n\n\t\t\t\t<\/li><li class=\"wc-block-product post-1107 product type-product status-publish has-post-thumbnail product_cat-dc-mcb  instock shipping-taxable product-type-simple\"\n\t\t\t\t\t\n\t\t\t\tdata-wp-interactive=\"woocommerce\/product-collection\"\n\t\t\t\tdata-wp-context='{\"productId\":1107}'\n\t\t\t\tdata-wp-key=\"product-item-1107\"\n\t\t\t\n\t\t\t\t>\n\t\t\t\t\t\n<div data-block-name=\"woocommerce\/product-image\" data-image-sizing=\"thumbnail\" data-is-descendent-of-query-loop=\"true\" data-show-sale-badge=\"false\" class=\"wc-block-components-product-image wc-block-grid__product-image wc-block-components-product-image--aspect-ratio-auto wp-block-woocommerce-product-image\"><a href=\"https:\/\/cnkuangya.com\/ar\/product\/dc-circuit-breaker-3p-750v-kydb63\/\" style=\"\" data-wp-on--click=\"woocommerce\/product-collection::actions.viewProduct\"><img decoding=\"async\" width=\"300\" height=\"300\" src=\"https:\/\/cnkuangya.com\/wp-content\/uploads\/2025\/09\/1-2-300x300.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"dc circuit breaker 3p 750v\" data-testid=\"product-image\" data-image-id=\"2074\" style=\"object-fit:cover;\" loading=\"lazy\" srcset=\"https:\/\/cnkuangya.com\/wp-content\/uploads\/2025\/09\/1-2-300x300.webp 300w, https:\/\/cnkuangya.com\/wp-content\/uploads\/2025\/09\/1-2-150x150.webp 150w, https:\/\/cnkuangya.com\/wp-content\/uploads\/2025\/09\/1-2-768x768.webp 768w, https:\/\/cnkuangya.com\/wp-content\/uploads\/2025\/09\/1-2-12x12.webp 12w, https:\/\/cnkuangya.com\/wp-content\/uploads\/2025\/09\/1-2-600x600.webp 600w, https:\/\/cnkuangya.com\/wp-content\/uploads\/2025\/09\/1-2-100x100.webp 100w, https:\/\/cnkuangya.com\/wp-content\/uploads\/2025\/09\/1-2.webp 800w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><div class=\"wc-block-components-product-image__inner-container\">\n\n<\/div><\/a><\/div>\n\n<h2 style=\"font-size:clamp(14px, 0.875rem + ((1vw - 3.2px) * 0.313), 18px);line-height:1.4; margin-bottom:0.75rem;margin-top:0;\" class=\"has-text-align-center wp-block-post-title\"><a data-wp-on--click=\"woocommerce\/product-collection::actions.viewProduct\" href=\"https:\/\/cnkuangya.com\/ar\/product\/dc-circuit-breaker-3p-750v-kydb63\/\" target=\"_self\">DC Circuit Breaker 3P 750V | KYDB-63-3P<\/a><\/h2>\n\n\t\t\t\t<\/li><li class=\"wc-block-product post-1120 product type-product status-publish has-post-thumbnail product_cat-dc-mcb last instock shipping-taxable product-type-simple\"\n\t\t\t\t\t\n\t\t\t\tdata-wp-interactive=\"woocommerce\/product-collection\"\n\t\t\t\tdata-wp-context='{\"productId\":1120}'\n\t\t\t\tdata-wp-key=\"product-item-1120\"\n\t\t\t\n\t\t\t\t>\n\t\t\t\t\t\n<div data-block-name=\"woocommerce\/product-image\" data-image-sizing=\"thumbnail\" data-is-descendent-of-query-loop=\"true\" data-show-sale-badge=\"false\" class=\"wc-block-components-product-image wc-block-grid__product-image wc-block-components-product-image--aspect-ratio-auto wp-block-woocommerce-product-image\"><a href=\"https:\/\/cnkuangya.com\/ar\/product\/dc-circuit-breaker-4p-1000v-125a-kydb125\/\" style=\"\" data-wp-on--click=\"woocommerce\/product-collection::actions.viewProduct\"><img decoding=\"async\" width=\"300\" height=\"300\" src=\"https:\/\/cnkuangya.com\/wp-content\/uploads\/2025\/09\/1-7-300x300.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"dc circuit breaker 4p 1000v 125a\" data-testid=\"product-image\" data-image-id=\"2102\" style=\"object-fit:cover;\" loading=\"lazy\" srcset=\"https:\/\/cnkuangya.com\/wp-content\/uploads\/2025\/09\/1-7-300x300.webp 300w, https:\/\/cnkuangya.com\/wp-content\/uploads\/2025\/09\/1-7-150x150.webp 150w, https:\/\/cnkuangya.com\/wp-content\/uploads\/2025\/09\/1-7-768x768.webp 768w, https:\/\/cnkuangya.com\/wp-content\/uploads\/2025\/09\/1-7-12x12.webp 12w, https:\/\/cnkuangya.com\/wp-content\/uploads\/2025\/09\/1-7-600x600.webp 600w, https:\/\/cnkuangya.com\/wp-content\/uploads\/2025\/09\/1-7-100x100.webp 100w, https:\/\/cnkuangya.com\/wp-content\/uploads\/2025\/09\/1-7.webp 800w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><div class=\"wc-block-components-product-image__inner-container\">\n\n<\/div><\/a><\/div>\n\n<h2 style=\"font-size:clamp(14px, 0.875rem + ((1vw - 3.2px) * 0.313), 18px);line-height:1.4; margin-bottom:0.75rem;margin-top:0;\" class=\"has-text-align-center wp-block-post-title\"><a data-wp-on--click=\"woocommerce\/product-collection::actions.viewProduct\" href=\"https:\/\/cnkuangya.com\/ar\/product\/dc-circuit-breaker-4p-1000v-125a-kydb125\/\" target=\"_self\">DC Circuit Breaker 4P 1000V 125A | KYDB-125-4P<\/a><\/h2>\n\n\t\t\t\t<\/li><\/ul><\/div>\n\n\n\n<div class=\"wp-block-stackable-columns alignfull stk-block-columns stk-block stk-41d1c42\" data-block-id=\"41d1c42\"><div class=\"stk-row stk-inner-blocks stk-block-content stk-content-align stk-41d1c42-column\">\n<div class=\"wp-block-stackable-column stk-block-column stk-column stk-block stk-37f8a85\" data-v=\"4\" data-block-id=\"37f8a85\"><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-37f8a85-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-37f8a85-inner-blocks\">\n<!-- ===== SEC3 \u2014 Model Comparison & Application Guidance ===== -->\n<section id=\"sec-comparison\" class=\"ky-sec3\">\n  <div class=\"ky-container ky-flex\">\n    <!-- \u5de6\u4fa7\u5bf9\u6bd4\u8868 + \u56fe\u7247 -->\n    <div class=\"ky-col ky-col-table\">\n      <h3 class=\"ky-title\">KYDB Series Comparison<\/h3>\n      <table class=\"ky-table\">\n        <thead>\n          <tr>\n            <th>Series<\/th>\n            <th>Rated Current<\/th>\n            <th>Voltage Options<\/th>\n            <th>Applications<\/th>\n            <th>Standards<\/th>\n          <\/tr>\n        <\/thead>\n        <tbody>\n          <tr>\n            <td><strong>KYDB-63<\/strong><\/td>\n            <td>Up to 63A<\/td>\n            <td>250V \/ 500V \/ 750V \/ 1000V<\/td>\n            <td>Residential PV, small ESS, DC panels<\/td>\n            <td>\n              <a href=\"https:\/\/webstore.iec.ch\/publication\/248\" target=\"_blank\" rel=\"Dofollow noopener\">IEC 60947-2<\/a>, \n              <a href=\"https:\/\/standardscatalog.ul.com\/standards\/en\/standard_489\" target=\"_blank\" rel=\"Dofollow noopener\">UL 489<\/a>\n            <\/td>\n          <\/tr>\n          <tr>\n            <td><strong>KYDB-125<\/strong><\/td>\n            <td>Up to 125A<\/td>\n            <td>250V \/ 500V \/ 750V \/ 1000V<\/td>\n            <td>C&#038;I solar, EV charging, industrial ESS<\/td>\n            <td>\n              <a href=\"https:\/\/webstore.iec.ch\/publication\/248\" target=\"_blank\" rel=\"Dofollow noopener\">IEC 60947-2<\/a>, \n              <a href=\"https:\/\/standardscatalog.ul.com\/standards\/en\/standard_489\" target=\"_blank\" rel=\"Dofollow noopener\">UL 489<\/a>\n            <\/td>\n          <\/tr>\n        <\/tbody>\n      <\/table>\n\n      <!-- \u4fdd\u7559\u56fe\u7247 -->\n      <div class=\"ky-table-img\">\n        <img decoding=\"async\" src=\"https:\/\/cnkuangya.com\/wp-content\/uploads\/2025\/09\/Residential-Rooftop.webp\" \n             alt=\"Residential rooftop PV installation with Kuangya DC MCBs\">\n      <\/div>\n    <\/div>\n\n    <!-- \u53f3\u4fa7\u8bf4\u660e\u6587\u5b57 -->\n    <div class=\"ky-col ky-col-text\">\n      <h3 class=\"ky-title\">DC MCB Series Selection Guide<\/h3>\n      <p>\n        When selecting a <strong>DC MCB (Miniature Circuit Breaker)<\/strong> for solar PV, ESS, or EV charging projects, \n        the current rating and installation scale are key factors. Kuangya offers two ranges optimized for different needs.\n      <\/p>\n      <p>\n        <strong>KYDB-63 Series<\/strong> \u2014 Designed for up to <strong>63A<\/strong>, it is ideal for \n        <em>residential solar DC circuits<\/em> and <em>small-scale ESS racks<\/em>. Compact and reliable, \n        it ensures safe arc extinguishing at up to 1000VDC, making it a cost-effective choice for rooftops up to 10 kW.\n      <\/p>\n      <p>\n        <strong>KYDB-125 Series<\/strong> \u2014 Rated up to <strong>125A<\/strong>, this model supports \n        <em>commercial PV systems<\/em>, <em>EV charging hubs<\/em>, and <em>industrial ESS containers<\/em>. \n        With higher breaking capacity, it guarantees compliance with both \n        <a href=\"https:\/\/webstore.iec.ch\/publication\/248\" target=\"_blank\" rel=\"nofollow noopener\">IEC 60947-2<\/a> \n        and <a href=\"https:\/\/standardscatalog.ul.com\/standards\/en\/standard_489\" target=\"_blank\" rel=\"nofollow noopener\">UL 489<\/a>.\n      <\/p>\n      <p>\n        Kuangya DC MCBs integrate seamlessly with \n        <a href=\"\/dc-fuse\">DC Fuse<\/a>, <a href=\"\/dc-spd\">DC SPD<\/a>, \n        <a href=\"\/dc-switch-disconnector\">DC Switch Disconnectors<\/a>, and \n        <a href=\"\/pv-combiner-box\">PV Combiner Boxes<\/a>, ensuring complete protection coordination.\n      <\/p>\n      <p>\n        \ud83d\udccc <em>Tip:<\/em> Choose <strong>KYDB-63<\/strong> for residential or small ESS, \n        and <strong>KYDB-125<\/strong> for commercial solar, EV charging, or large-scale ESS. \n        For customized selection, reach out via our <a href=\"\/contact-us\">Enquiry Form<\/a>.\n      <\/p>\n      <!-- \u8865\u5145 SEO \u6587\u6848 -->\n      <p><strong>All Kuangya DC MCBs are factory-tested under high-voltage DC conditions, ensuring consistent reliability and safety.<\/strong><\/p>\n          <\/div>\n  <\/div>\n\n  <style>\n    .ky-sec3{padding:60px 0;background:#fff;}\n    .ky-sec3 .ky-container{display:grid;grid-template-columns:1fr 1fr;gap:32px;align-items:start;}\n    .ky-sec3 .ky-title{font-size:20px;font-weight:800;color:#111827;margin-bottom:14px;}\n    \/* \u8868\u683c *\/\n    .ky-table{width:100%;border-collapse:collapse;font-size:14px;margin-bottom:18px;background:#fff;}\n    .ky-table th,.ky-table td{border:1px solid #E5E7EB;padding:8px 10px;text-align:left;}\n    .ky-table th{background:#F9FAFB;font-weight:700;}\n    .ky-table td strong{color:#B5220E;}\n    .ky-table td a{color:#B5220E;text-decoration:underline;font-weight:600;}\n    .ky-table td a:hover{color:#8f1b0f;}\n    \/* \u56fe\u7247 *\/\n    .ky-table-img{width:100%;margin-top:16px;border-radius:12px;overflow:hidden;box-shadow:0 4px 14px rgba(0,0,0,.08);}\n    .ky-table-img img{width:100%;height:220px;object-fit:cover;object-position:center;display:block;}\n    \/* \u6587\u6848 *\/\n    .ky-col-text p{font-size:14px;line-height:1.7;color:#4B5563;margin:0 0 14px;}\n    .ky-col-text a{color:#B5220E;font-weight:600;text-decoration:underline;}\n    .ky-col-text a:hover{color:#8f1b0f;}\n    \/* \u54cd\u5e94\u5f0f *\/\n    @media(max-width:900px){\n      .ky-sec3 .ky-container{grid-template-columns:1fr;}\n      .ky-table-img img{height:200px;}\n    }\n  <\/style>\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-d94b14a\" data-block-id=\"d94b14a\"><div class=\"stk-row stk-inner-blocks stk-block-content stk-content-align stk-d94b14a-column alignfull\">\n<div class=\"wp-block-stackable-column stk-block-column stk-column stk-block stk-906dfe6\" data-v=\"4\" data-block-id=\"906dfe6\"><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-906dfe6-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-906dfe6-inner-blocks\">\n<!-- ===== SEC4 \u2014 What is a DC MCB ===== -->\n<section id=\"sec-what\" class=\"ky-sec4\">\n  <div class=\"ky-container\">\n    <h3 class=\"ky-title-center\">What is a DC MCB?<\/h3>\n    <div class=\"ky-grid\">\n      <!-- Card 1 -->\n      <div class=\"ky-card\">\n        <h4><span class=\"ky-icon\">\u26a1<\/span> Why it matters<\/h4>\n        <p>\n          A <strong>DC MCB (Miniature Circuit Breaker)<\/strong> is essential in modern \n          <strong>solar<\/strong> and <strong>ESS projects<\/strong>, protecting against overloads and short circuits. \n          Unlike AC breakers, a <strong>solar DC MCB<\/strong> is engineered to extinguish persistent DC arcs, \n          ensuring safety in rooftop arrays, battery systems, and <strong>EV charging<\/strong>. \n          Compliance with <a href=\"https:\/\/webstore.iec.ch\/publication\/248\" target=\"_blank\" rel=\"Dofollow noopener\">IEC 60947-2<\/a> \n          and <a href=\"https:\/\/standardscatalog.ul.com\/standards\/en\/standard_489\" target=\"_blank\" rel=\"Dofollow noopener\">UL 489<\/a> \n          provides global reliability.\n        <\/p>\n      <\/div>\n      <!-- Card 2 -->\n      <div class=\"ky-card\">\n        <h4><span class=\"ky-icon\">\ud83d\udd27<\/span> What\u2019s inside<\/h4>\n        <p>\n          Kuangya <strong>DC MCBs<\/strong> feature arc extinguishing chambers, robust silver-alloy contacts, \n          and modular poles from 1P to 4P. Rated up to <strong>1000VDC \/ 125A<\/strong>, they handle the demands \n          of high-power PV arrays and <strong>energy storage systems<\/strong>. Their precision design ensures \n          stable breaking capacity, long service life, and consistent <strong>DC circuit protection<\/strong> \n          under harsh operating conditions.\n        <\/p>\n      <\/div>\n      <!-- Card 3 -->\n      <div class=\"ky-card\">\n        <h4><span class=\"ky-icon\">\ud83c\udfe0<\/span> Where it\u2019s used<\/h4>\n        <p>\n          <strong>DC MCBs<\/strong> are widely applied in <strong>residential solar rooftops<\/strong>, \n          <strong>commercial PV plants<\/strong>, <strong>ESS racks<\/strong>, and <strong>EV charging hubs<\/strong>. \n          They isolate faults before they damage inverters or batteries, ensuring uninterrupted operation. \n          From small rooftop systems to <strong>large industrial ESS containers<\/strong>, Kuangya breakers \n          deliver safe and bankable protection for every scale of project.\n        <\/p>\n      <\/div>\n      <!-- Card 4 -->\n      <div class=\"ky-card\">\n        <h4><span class=\"ky-icon\">\ud83d\udee0\ufe0f<\/span> Install &#038; service<\/h4>\n        <p>\n          All Kuangya <strong>DC breakers<\/strong> are <strong>DIN-rail mounted<\/strong>, compact, and \n          designed for easy service. Their modular design allows field replacement without downtime, \n          reducing O&#038;M costs. With clear labeling, quick wiring, and robust housing, these \n          <strong>DC distribution breakers<\/strong> ensure installer efficiency and long-term \n          maintainability in demanding solar and ESS environments.\n        <\/p>\n      <\/div>\n    <\/div>\n  <\/div>\n\n  <style>\n    .ky-sec4 {\n      width: 100%;\n      background: #f9fafb;\n      padding: 60px 20px;\n    }\n    .ky-sec4 .ky-container {\n      max-width: 1280px;\n      margin: 0 auto;\n    }\n    .ky-title-center {\n      text-align: center;\n      font-size: 22px;\n      font-weight: 800;\n      color: #111827;\n      margin-bottom: 40px;\n    }\n    .ky-grid {\n      display: grid;\n      grid-template-columns: repeat(2, 1fr);\n      gap: 28px;\n    }\n    .ky-card {\n      background: #fff;\n      border-radius: 14px;\n      padding: 24px;\n      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);\n      transition: all 0.2s ease;\n    }\n    .ky-card:hover {\n      transform: translateY(-3px);\n      box-shadow: 0 6px 16px rgba(0, 0, 0, 0.1);\n    }\n    .ky-card h4 {\n      font-size: 16px;\n      font-weight: 700;\n      margin: 0 0 12px;\n      color: #111827;\n      display: flex;\n      align-items: center;\n      gap: 6px;\n    }\n    .ky-card p {\n      font-size: 14px;\n      line-height: 1.65;\n      color: #4b5563;\n      margin: 0;\n    }\n    .ky-card p strong {\n      color: #111827;\n    }\n    .ky-icon {\n      font-size: 18px;\n      line-height: 1;\n    }\n    \/* \u54cd\u5e94\u5f0f *\/\n    @media (max-width: 900px) {\n      .ky-grid {\n        grid-template-columns: 1fr;\n      }\n    }\n  <\/style>\n<\/section>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-stackable-columns stk-block-columns stk-block stk-46de40f\" data-block-id=\"46de40f\"><div class=\"stk-row stk-inner-blocks stk-block-content stk-content-align stk-46de40f-column\">\n<div class=\"wp-block-stackable-column stk-block-column stk-column stk-block stk-16cc214\" data-v=\"4\" data-block-id=\"16cc214\"><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-16cc214-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-16cc214-inner-blocks\">\n<style>\n\/* Section wrapper *\/\n.ky-apps {\n  max-width: 1280px;\n  margin: 0 auto;\n  padding: 40px 20px;\n  font-family: Arial, sans-serif;\n}\n\n\/* Title *\/\n.ky-apps h2 {\n  text-align: center;\n  font-size: 28px;\n  font-weight: 700;\n  margin-bottom: 12px;\n}\n.ky-apps p.lead {\n  text-align: center;\n  max-width: 800px;\n  margin: 0 auto 32px;\n  color: #374151;\n  font-size: 15px;\n  line-height: 1.6;\n}\n\n\/* Grid - \u56fa\u5b9a\u4e09\u5217 *\/\n.ky-app-grid {\n  display: grid;\n  grid-template-columns: repeat(3, 1fr);\n  gap: 20px;\n}\n@media(max-width: 900px) {\n  .ky-app-grid { grid-template-columns: repeat(2, 1fr); }\n}\n@media(max-width: 640px) {\n  .ky-app-grid { grid-template-columns: 1fr; }\n}\n\n\/* Card *\/\n.ky-app {\n  display: flex;\n  flex-direction: column;\n  border-radius: 14px;\n  overflow: hidden;\n  box-shadow: 0 2px 6px rgba(0,0,0,0.08);\n  transition: transform .2s ease, box-shadow .2s ease;\n}\n.ky-app:hover {\n  transform: translateY(-4px);\n  box-shadow: 0 6px 16px rgba(0,0,0,0.12);\n}\n\n\/* Image *\/\n.ky-app-media {\n  height: 200px;\n  background-size: cover;\n  background-position: center;\n}\n\n\/* Body *\/\n.ky-app-body {\n  background: #fff;\n  padding: 14px;\n}\n.ky-app-body h3 {\n  font-size: 16px;\n  font-weight: 700;\n  margin: 0 0 6px;\n  color: #111827;\n}\n.ky-app-body p {\n  font-size: 13px;\n  color: #4B5563;\n  margin: 0;\n}\n<\/style>\n\n<section class=\"ky-apps\">\n  <h2>Applications &#038; Use Cases<\/h2>\n  <p class=\"lead\">\n    Kuangya <strong>DC MCB<\/strong> delivers reliable <strong>DC circuit protection<\/strong> \n    for <strong>solar PV<\/strong>, <strong>ESS<\/strong>, and <strong>EV charging<\/strong> scenarios.\n    It isolates faults, protects inverters\/batteries, and coordinates with \n    <a href=\"\/dc-fuse\">DC fuses<\/a>, <a href=\"\/dc-spd\">DC SPDs<\/a>, \n    and <a href=\"\/dc-switch-disconnector\">DC disconnectors<\/a> inside \n    <a href=\"\/pv-combiner-box\">PV combiner boxes<\/a>.\n  <\/p>\n\n  <div class=\"ky-app-grid\">\n    <article class=\"ky-app\">\n      <div class=\"ky-app-media\" style=\"background-image:url('https:\/\/cnkuangya.com\/wp-content\/uploads\/2025\/09\/Residential-Rooftop.webp')\"><\/div>\n      <div class=\"ky-app-body\">\n        <h3>Residential Rooftop Solar<\/h3>\n        <p>String-level <strong>DC MCB<\/strong> for 600\u20131000V PV rooftops; ideal with <a href=\"\/dc-fuse\">DC fuse<\/a> + <a href=\"\/dc-spd\">SPD<\/a> coordination.<\/p>\n      <\/div>\n    <\/article>\n    \n    <article class=\"ky-app\">\n      <div class=\"ky-app-media\" style=\"background-image:url('https:\/\/cnkuangya.com\/wp-content\/uploads\/2025\/09\/Commercial-Industrial-Rooftop-.webp')\"><\/div>\n      <div class=\"ky-app-body\">\n        <h3>Commercial &#038; Industrial PV Arrays<\/h3>\n        <p>High-current feeders protected by <strong>DC MCB 1000V<\/strong> for C&#038;I rooftops and carports.<\/p>\n      <\/div>\n    <\/article>\n    \n    <article class=\"ky-app\">\n      <div class=\"ky-app-media\" style=\"background-image:url('https:\/\/cnkuangya.com\/wp-content\/uploads\/2025\/09\/Ground-Mount-Arrays.webp')\"><\/div>\n      <div class=\"ky-app-body\">\n        <h3>Ground-Mounted Solar Systems<\/h3>\n        <p>Combiner arrays using <strong>miniature DC circuit breakers<\/strong> for safer maintenance.<\/p>\n      <\/div>\n    <\/article>\n\n    <article class=\"ky-app\">\n      <div class=\"ky-app-media\" style=\"background-image:url('https:\/\/cnkuangya.com\/wp-content\/uploads\/2025\/09\/ESS-DC-Bus-Coupling.webp')\"><\/div>\n      <div class=\"ky-app-body\">\n        <h3>ESS Battery Racks &#038; Containers<\/h3>\n        <p>Protection up to <strong>125A<\/strong>; integrates with BMS and <strong>DC distribution<\/strong>.<\/p>\n      <\/div>\n    <\/article>\n\n    <article class=\"ky-app\">\n      <div class=\"ky-app-media\" style=\"background-image:url('https:\/\/cnkuangya.com\/wp-content\/uploads\/2025\/09\/Carports-EV-Canopies.webp')\"><\/div>\n      <div class=\"ky-app-body\">\n        <h3>EV Charging Hubs \/ Carports<\/h3>\n        <p>Protects feeders in <strong>EV charging<\/strong> sites with upstream disconnects.<\/p>\n      <\/div>\n    <\/article>\n\n    <article class=\"ky-app\">\n      <div class=\"ky-app-media\" style=\"background-image:url('https:\/\/cnkuangya.com\/wp-content\/uploads\/2025\/09\/MicrogridOff-Grid.png')\"><\/div>\n      <div class=\"ky-app-body\">\n        <h3>Microgrid &#038; Off-Grid Systems<\/h3>\n        <p>Rugged <strong>solar DC MCB<\/strong> ensures isolation for remote microgrids in harsh conditions.<\/p>\n      <\/div>\n    <\/article>\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-a0e9ad1\" data-block-id=\"a0e9ad1\"><div class=\"stk-row stk-inner-blocks stk-block-content stk-content-align stk-a0e9ad1-column alignfull\">\n<div class=\"wp-block-stackable-column stk-block-column stk-column stk-block stk-5b17085\" data-v=\"4\" data-block-id=\"5b17085\"><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-5b17085-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-5b17085-inner-blocks\">\n<!-- ===== SEC6 \u2014 Application Guidance (Full-width) ===== -->\n<section id=\"sec-guidance\" class=\"ky-sec6\">\n  <div class=\"ky-wrap\">\n    <h3 class=\"ky6-title\">Application Guidance<\/h3>\n    <p class=\"ky6-intro\">\n      Not sure which <strong>DC MCB<\/strong> to choose? Use the quick guidance below.\n      These pair well with <a href=\"\/dc-fuse\">DC Fuse<\/a>, <a href=\"\/dc-spd\">DC SPD<\/a>,\n      <a href=\"\/dc-switch-disconnector\">DC Switch Disconnectors<\/a> and\n      <a href=\"\/pv-combiner-box\">PV Combiner Boxes<\/a> for a coordinated protection scheme.\n    <\/p>\n\n    <div class=\"ky6-grid\">\n      <!-- Card 1 -->\n      <article class=\"ky6-card\">\n        <div class=\"ky6-head\">\n          <span class=\"ky6-tag ky6-tag-63\">63A<\/span>\n          <h4>Residential Rooftop PV<\/h4>\n          <p class=\"ky6-sub\">Small PV arrays (up to ~10&nbsp;kW), string protection<\/p>\n        <\/div>\n        <ul class=\"ky6-points\">\n          <li>Recommended: <strong>KYDB-63 (1P \/ 2P \/ 3P \/ 4P)<\/strong><\/li>\n          <li>Typical: <strong>250\u20131000VDC<\/strong>, fast arc quenching<\/li>\n          <li>Place at string\/feeder; coordinate with <a href=\"\/dc-fuse\">DC Fuses<\/a> &amp; <a href=\"\/dc-spd\">SPDs<\/a><\/li>\n        <\/ul>\n        <div class=\"ky6-cta\">\n          <a class=\"ky6-btn\" href=\"#mcb-selector\">Compare KYDB-63<\/a>\n          <a class=\"ky6-link\" href=\"https:\/\/cnkuangya.com\/product\/dc-circuit-breaker-1p-250v-kydb63\/\">1P<\/a>\n          <span>\u00b7<\/span>\n          <a class=\"ky6-link\" href=\"https:\/\/cnkuangya.com\/product\/dc-circuit-breaker-2p-500v-kydb63\/\">2P<\/a>\n          <span>\u00b7<\/span>\n          <a class=\"ky6-link\" href=\"https:\/\/cnkuangya.com\/product\/dc-circuit-breaker-3p-750v-kydb63\/\">3P<\/a>\n          <span>\u00b7<\/span>\n          <a class=\"ky6-link\" href=\"https:\/\/cnkuangya.com\/product\/dc-circuit-breaker-4p-1000v-kydb63\/\">4P<\/a>\n        <\/div>\n      <\/article>\n\n      <!-- Card 2 -->\n      <article class=\"ky6-card\">\n        <div class=\"ky6-head\">\n          <span class=\"ky6-tag ky6-tag-125\">125A<\/span>\n          <h4>Commercial &amp; Industrial Rooftop<\/h4>\n          <p class=\"ky6-sub\">Multiple strings, higher feeder current<\/p>\n        <\/div>\n        <ul class=\"ky6-points\">\n          <li>Recommended: <strong>KYDB-125 (1P \/ 2P)<\/strong><\/li>\n          <li>Feeder &amp; sub-array protection up to <strong>125A<\/strong><\/li>\n          <li>Coordinate with upstream <a href=\"\/dc-switch-disconnector\">DC disconnectors<\/a><\/li>\n        <\/ul>\n        <div class=\"ky6-cta\">\n          <a class=\"ky6-btn\" href=\"#mcb-selector\">Compare KYDB-125<\/a>\n          <a class=\"ky6-link\" href=\"https:\/\/cnkuangya.com\/product\/dc-circuit-breaker-1p-250v-125a-kydb125\/\">1P<\/a>\n          <span>\u00b7<\/span>\n          <a class=\"ky6-link\" href=\"https:\/\/cnkuangya.com\/product\/dc-circuit-breaker-2p-500v-125a-kydb125\/\">2P<\/a>\n        <\/div>\n      <\/article>\n\n      <!-- Card 3 -->\n      <article class=\"ky6-card\">\n        <div class=\"ky6-head\">\n          <span class=\"ky6-tag ky6-tag-125\">125A<\/span>\n          <h4>Ground-Mounted \/ Utility PV &amp; ESS<\/h4>\n          <p class=\"ky6-sub\">Large combiner outputs, DC bus &amp; containerized ESS<\/p>\n        <\/div>\n        <ul class=\"ky6-points\">\n          <li>Recommended: <strong>KYDB-125 (3P \/ 4P)<\/strong><\/li>\n          <li>For <strong>750 \/ 1000VDC<\/strong> mains, higher breaking capacity<\/li>\n          <li>Integrates with <a href=\"\/pv-combiner-box\">PV combiner<\/a> &amp; <a>DC distribution<\/a><\/li>\n        <\/ul>\n        <div class=\"ky6-cta\">\n          <a class=\"ky6-btn\" href=\"#mcb-selector\">Compare KYDB-125<\/a>\n          <a class=\"ky6-link\" href=\"https:\/\/cnkuangya.com\/product\/dc-circuit-breaker-3p-750v-125a-kydb125\/\">3P<\/a>\n          <span>\u00b7<\/span>\n          <a class=\"ky6-link\" href=\"https:\/\/cnkuangya.com\/product\/dc-circuit-breaker-4p-1000v-125a-kydb125\/\">4P<\/a>\n        <\/div>\n      <\/article>\n\n      <!-- Card 4 -->\n      <article class=\"ky6-card\">\n        <div class=\"ky6-head\">\n          <span class=\"ky6-tag ky6-tag-125\">125A<\/span>\n          <h4>EV Charging Hubs \/ Carports<\/h4>\n          <p class=\"ky6-sub\">DC feeders &amp; auxiliaries in EV charging sites<\/p>\n        <\/div>\n        <ul class=\"ky6-points\">\n          <li>Recommended: <strong>KYDB-125 (2P \/ 4P)<\/strong><\/li>\n          <li>Coordinate with <a href=\"\/dc-spd\">DC SPD<\/a> and upstream isolation<\/li>\n          <li>Label &amp; document per <a href=\"https:\/\/www.iec.ch\/homepage\" target=\"_blank\" rel=\"nofollow noopener\">IEC<\/a> \/ <a href=\"https:\/\/www.ul.com\/\" target=\"_blank\" rel=\"nofollow noopener\">UL<\/a> practice<\/li>\n        <\/ul>\n        <div class=\"ky6-cta\">\n          <a class=\"ky6-btn\" href=\"#mcb-selector\">Compare Models<\/a>\n          <a class=\"ky6-link\" href=\"https:\/\/cnkuangya.com\/product\/dc-circuit-breaker-2p-500v-125a-kydb125\/\">2P<\/a>\n          <span>\u00b7<\/span>\n          <a class=\"ky6-link\" href=\"https:\/\/cnkuangya.com\/product\/dc-circuit-breaker-4p-1000v-125a-kydb125\/\">4P<\/a>\n        <\/div>\n      <\/article>\n    <\/div>\n\n    <p class=\"ky6-note\">\n      * Final sizing depends on <a href=\"https:\/\/www.iec.ch\/homepage\" target=\"_blank\" rel=\"Dofollow noopener\">IEC 60947-2<\/a> \/ \n      <a href=\"https:\/\/www.ul.com\/\" target=\"_blank\" rel=\"Dofollow noopener\">UL 489<\/a> compliance, cable ampacity, fault level and system architecture.\n      Need help? <a href=\"\/contact-us\">Talk to our engineers<\/a>.\n    <\/p>\n  <\/div>\n\n  <style>\n    :root{\n      --ky-brand:#B5220E;--ky-accent:#FD5732;\n      --ky-text:#111827;--ky-muted:#4B5563;\n      --ky-border:#E5E7EB;--ky-white:#FFF;\n      --ky-bg:#F9FAFB;\n    }\n    .ky-sec6{\n      width:100%;\n      background:linear-gradient(180deg,#fafafa 0%, #f1f5f9 100%);\n      padding:56px 20px;\n    }\n    .ky-sec6 .ky-wrap{max-width:1280px;margin:0 auto}\n    .ky6-title{font-size:22px;font-weight:800;color:var(--ky-text);text-align:center;margin:0 0 8px}\n    .ky6-intro{\n      max-width:900px;margin:0 auto 22px;\n      text-align:center;color:var(--ky-muted);font-size:14px;line-height:1.7;\n    }\n    .ky6-intro a{color:var(--ky-brand);text-decoration:underline;font-weight:600}\n    .ky6-intro a:hover{color:#8f1b0f}\n\n    .ky6-grid{\n      display:grid;grid-template-columns:repeat(4,1fr);gap:16px;\n    }\n    @media(max-width:1100px){.ky6-grid{grid-template-columns:repeat(2,1fr)}}\n    @media(max-width:640px){.ky6-grid{grid-template-columns:1fr}}\n\n    .ky6-card{\n      display:flex;flex-direction:column;gap:10px;\n      background:var(--ky-white);border:1px solid var(--ky-border);border-radius:16px;\n      padding:14px 14px 12px;box-shadow:0 1px 2px rgba(0,0,0,.04);\n      transition:.18s ease;min-height:242px;\n    }\n    .ky6-card:hover{transform:translateY(-2px);box-shadow:0 10px 24px rgba(0,0,0,.08)}\n\n    .ky6-head h4{font-size:16px;margin:2px 0 2px 0;color:var(--ky-text);font-weight:800}\n    .ky6-sub{margin:0;color:var(--ky-muted);font-size:12px}\n    .ky6-tag{\n      display:inline-block;padding:2px 8px;border-radius:999px;\n      font-size:11px;font-weight:800;margin-bottom:6px\n    }\n    .ky6-tag-63{background:#fde4e0;color:#7d140a;border:1px solid #f6b8ac}\n    .ky6-tag-125{background:#fee9bf;color:#8a5a00;border:1px solid #f7d48b}\n\n    .ky6-points{margin:0;padding-left:18px}\n    .ky6-points li{color:#374151;font-size:13px;margin:4px 0}\n    .ky6-points a{color:var(--ky-brand);text-decoration:underline}\n\n    .ky6-cta{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-top:auto}\n.ky6-btn {\n  display:inline-block;\n  background:var(--ky-brand);\n  color:#fff !important;   \/* \u5f3a\u5236\u767d\u8272\u6587\u5b57 *\/\n  border:1px solid var(--ky-brand);\n  padding:6px 10px;\n  border-radius:10px;\n  font-size:12px;\n  font-weight:700;\n  text-decoration:none !important; \/* \u907f\u514d\u88ab\u5168\u5c40a\u8986\u76d6 *\/\n  line-height:1.4;\n}\n.ky6-btn:hover {\n  background:#8f1b0f;\n  border-color:#8f1b0f;\n  color:#fff !important;   \/* \u4fdd\u8bc1hover\u65f6\u4e5f\u4e3a\u767d\u8272 *\/\n}\n\n    .ky6-link{font-size:12px;color:var(--ky-brand);text-decoration:underline}\n    .ky6-link:hover{color:#8f1b0f}\n\n    .ky6-note{\n      margin:18px 0 0 0;text-align:center;color:#6b7280;font-size:12px;\n    }\n    .ky6-note a{color:var(--ky-brand);text-decoration:underline}\n  <\/style>\n<\/section>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-stackable-columns stk-block-columns stk-block stk-13063e7\" data-block-id=\"13063e7\"><div class=\"stk-row stk-inner-blocks stk-block-content stk-content-align stk-13063e7-column\">\n<div class=\"wp-block-stackable-column stk-block-column stk-column stk-block stk-6e2431d\" data-v=\"4\" data-block-id=\"6e2431d\"><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-6e2431d-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-6e2431d-inner-blocks\">\n<!-- ===== SEC6 \u2014 Wiring & Installation (add-on section) ===== -->\n<section id=\"sec-wiring\" class=\"ky-sec6w\">\n  <div class=\"ky6w-wrap\">\n    <h3 class=\"ky6w-title\">Wiring &amp; Installation Guide<\/h3>\n    <p class=\"ky6w-intro\">\n      Practical notes for installing <strong>DC MCB<\/strong> in <strong>solar PV<\/strong>, <strong>ESS<\/strong> and\n      <strong>EV charging<\/strong> systems. Coordinate the breaker with\n      <a href=\"\/dc-fuse\">DC fuses<\/a>, <a href=\"\/dc-spd\">DC SPDs<\/a>,\n      <a href=\"\/dc-switch-disconnector\">DC disconnectors<\/a> and\n      <a href=\"\/pv-combiner-box\">PV combiner boxes<\/a>.\n    <\/p>\n\n    <!-- mini cards: accessories \/ wiring \/ labeling -->\n    <div class=\"ky6w-grid\">\n      <article class=\"ky6w-card\">\n        <h4>Wiring Accessories<\/h4>\n        <ul class=\"ky6w-list\">\n          <li><strong>MC4 leads \/ ring or fork lugs<\/strong> for PV strings and feeders.<\/li>\n          <li><strong>Comb busbar<\/strong> (phase combs) or <strong>Cu links<\/strong> for multi-pole bridges.<\/li>\n          <li><strong>DIN-rail EN&nbsp;60715<\/strong> mounting; allow air gaps for heat dissipation.<\/li>\n          <li>Use the correct <strong>torque<\/strong> for terminals (see datasheet); re-check after 24\u201348&nbsp;h.<\/li>\n        <\/ul>\n      <\/article>\n\n      <article class=\"ky6w-card\">\n        <h4>Cabling &amp; Protection<\/h4>\n        <ul class=\"ky6w-list\">\n          <li>Size cables by <strong>continuous current<\/strong> + <strong>temperature derating<\/strong>.<\/li>\n          <li>Keep <strong>feeder runs short<\/strong> and avoid tight bundles to reduce temperature rise.<\/li>\n          <li>For strings: MCB provides isolation; coordinate with a <a href=\"\/dc-fuse\">gPV fuse<\/a>.<\/li>\n          <li>Add upstream <a href=\"\/dc-spd\">SPD<\/a> and <a href=\"\/dc-switch-disconnector\">main disconnector<\/a>.<\/li>\n        <\/ul>\n      <\/article>\n\n      <article class=\"ky6w-card\">\n        <h4>Polarity &amp; Labeling<\/h4>\n        <ul class=\"ky6w-list\">\n          <li>Clearly label <strong>+ \/ \u2212<\/strong>, pole count and <strong>V<sub>DC<\/sub><\/strong> rating at the device.<\/li>\n          <li>Use <strong>handle-tie<\/strong> kits when poles must trip together (2P\/3P\/4P).<\/li>\n          <li>Keep minimum bend radius; route away from sharp edges and hot surfaces.<\/li>\n          <li>Record settings, torque and test results in the O&amp;M log.<\/li>\n        <\/ul>\n      <\/article>\n    <\/div>\n\n    <!-- voltage vs poles quick table -->\n    <div class=\"ky6w-table-wrap\">\n      <h4 class=\"ky6w-sub\">Typical DC Voltage by Pole Configuration<\/h4>\n      <p class=\"ky6w-note\">\n        Values below reflect common system groupings for Kuangya KYDB series; always verify the exact rating on the product label\n        and the datasheet (<strong>IEC&nbsp;60947-2<\/strong> \/ <strong>UL&nbsp;489<\/strong>).\n      <\/p>\n      <div class=\"ky6w-table\">\n        <div class=\"ky6w-row ky6w-head\">\n          <div>Pole option<\/div><div>Typical V<sub>DC<\/sub><\/div><div>Typical application<\/div>\n        <\/div>\n        <div class=\"ky6w-row\">\n          <div><strong>1P<\/strong><\/div>\n          <div>250&nbsp;V&nbsp;DC<\/div>\n          <div>Small DC panels, auxiliaries, single-pole isolation<\/div>\n        <\/div>\n        <div class=\"ky6w-row\">\n          <div><strong>2P<\/strong><\/div>\n          <div>500&nbsp;V&nbsp;DC<\/div>\n          <div>PV strings (\u00b1), EV auxiliaries, balanced two-wire feeders<\/div>\n        <\/div>\n        <div class=\"ky6w-row\">\n          <div><strong>3P<\/strong><\/div>\n          <div>750&nbsp;V&nbsp;DC<\/div>\n          <div>ESS rack segments, higher-voltage sub-arrays<\/div>\n        <\/div>\n        <div class=\"ky6w-row\">\n          <div><strong>4P<\/strong><\/div>\n          <div>1000&nbsp;V&nbsp;DC<\/div>\n          <div>PV combiner outputs, containerized ESS \/ DC distribution<\/div>\n        <\/div>\n      <\/div>\n    <\/div>\n\n    <!-- micro FAQ -->\n    <div class=\"ky6w-faq\">\n      <details class=\"ky6w-q\">\n        <summary>Why does the allowable <strong>DC voltage<\/strong> increase with more poles?<\/summary>\n        <div class=\"ky6w-a\">\n          <p>\n            Multi-pole DC MCBs place <em>poles in series<\/em> so the total arc distance is increased and the\n            voltage stress is divided across internal arc chambers. For example, 2P \u2248 500&nbsp;VDC and 4P \u2248 1000&nbsp;VDC\n            for the KYDB series. Note that <strong>breaking capacity<\/strong> still follows the device rating\u2014adding poles\n            does not multiply the short-circuit rating. Always use the manufacturer\u2019s approved pole kits so the\n            poles trip together.\n          <\/p>\n        <\/div>\n      <\/details>\n\n      <details class=\"ky6w-q\">\n        <summary>Can I wire poles in <strong>parallel<\/strong> to increase current?<\/summary>\n        <div class=\"ky6w-a\">\n          <p>\n            Parallel poles are <strong>not recommended<\/strong> unless explicitly stated by the manufacturer.\n            Unequal impedance causes current imbalance and nuisance tripping. Choose the correct frame (e.g. <strong>KYDB-125<\/strong>)\n            and size cables per derating instead.\n          <\/p>\n        <\/div>\n      <\/details>\n    <\/div>\n\n    <div class=\"ky6w-cta\">\n      <a class=\"ky6w-btn\" href=\"\/contact-us\">Need a wiring pack? Talk to our engineers<\/a>\n    <\/div>\n  <\/div>\n\n  <style>\n    :root{\n      --ky6w-brand:#B5220E; --ky6w-text:#111827; --ky6w-muted:#4B5563;\n      --ky6w-border:#E5E7EB; --ky6w-bg:#FFFFFF; --ky6w-surface:#F8FAFC;\n    }\n    .ky-sec6w{width:100%;padding:56px 20px;background:#fff}\n    .ky6w-wrap{max-width:1280px;margin:0 auto}\n    .ky6w-title{margin:0 0 8px;text-align:center;font-weight:800;font-size:22px;color:var(--ky6w-text)}\n    .ky6w-intro{max-width:980px;margin:0 auto 22px;text-align:center;color:var(--ky6w-muted);font-size:14px;line-height:1.7}\n    .ky6w-intro a{color:var(--ky6w-brand);text-decoration:underline;font-weight:600}\n\n    .ky6w-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-bottom:18px}\n    @media(max-width:1000px){.ky6w-grid{grid-template-columns:repeat(2,1fr)}}\n    @media(max-width:640px){.ky6w-grid{grid-template-columns:1fr}}\n\n    .ky6w-card{\n      background:var(--ky6w-surface);border:1px solid var(--ky6w-border);border-radius:16px;\n      padding:14px;min-height:190px;box-shadow:0 1px 2px rgba(0,0,0,.04)\n    }\n    .ky6w-card h4{margin:0 0 6px;font-size:16px;font-weight:800;color:#111827}\n    .ky6w-list{margin:0;padding-left:18px}\n    .ky6w-list li{font-size:13px;color:#374151;margin:6px 0}\n\n    .ky6w-table-wrap{background:#fff;border:1px solid var(--ky6w-border);border-radius:16px;padding:14px;margin-bottom:14px}\n    .ky6w-sub{margin:0 0 6px;font-size:16px;font-weight:800}\n    .ky6w-note{margin:0 0 10px;color:#6b7280;font-size:12px}\n    .ky6w-table{display:grid;gap:6px}\n    .ky6w-row{display:grid;grid-template-columns:180px 170px 1fr;gap:8px;align-items:center;border:1px solid var(--ky6w-border);border-radius:10px;background:#fff;padding:8px}\n    .ky6w-head{background:#f3f4f6;font-weight:800}\n    @media(max-width:640px){\n      .ky6w-row{grid-template-columns:1fr}\n      .ky6w-head{display:none}\n      .ky6w-row div{padding:2px 0;border-bottom:1px dashed #eee}\n      .ky6w-row div:last-child{border-bottom:0}\n    }\n\n    .ky6w-faq{margin-top:8px}\n    .ky6w-q{border:1px solid var(--ky6w-border);border-radius:10px;margin:8px 0;background:#fff}\n    .ky6w-q summary{cursor:pointer;padding:10px 12px;font-size:14px;font-weight:700;color:#111827;list-style:none}\n    .ky6w-q[open] summary{border-bottom:1px solid var(--ky6w-border);background:#fafafa}\n    .ky6w-a{padding:10px 12px;font-size:13px;color:#4B5563;line-height:1.7}\n    .ky6w-a a{color:var(--ky6w-brand);text-decoration:underline}\n\n    .ky6w-cta{margin-top:16px;text-align:center}\n    .ky6w-btn{display:inline-block;background:var(--ky6w-brand);color:#fff !important;border:1px solid var(--ky6w-brand);\n      padding:10px 14px;border-radius:12px;font-size:14px;font-weight:800;text-decoration:none !important}\n    .ky6w-btn:hover{background:#8f1b0f;border-color:#8f1b0f}\n  <\/style>\n<\/section>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-stackable-columns stk-block-columns stk-block stk-5d94bef\" data-block-id=\"5d94bef\"><div class=\"stk-row stk-inner-blocks stk-block-content stk-content-align stk-5d94bef-column\">\n<div class=\"wp-block-stackable-column stk-block-column stk-column stk-block stk-bc6e398\" data-v=\"4\" data-block-id=\"bc6e398\"><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-bc6e398-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-bc6e398-inner-blocks\">\n<!-- ===== SEC7 \u2014 Why Choose Kuangya (Trust & Proof) ===== -->\n<section id=\"sec-why\" class=\"ky-sec7\">\n  <div class=\"ky7-wrap\">\n    <h3 class=\"ky7-title\">Why Choose Kuangya for DC MCBs<\/h3>\n    <p class=\"ky7-intro\">\n      Factory-tested DC miniature circuit breakers engineered for <strong>solar PV<\/strong>, <strong>ESS<\/strong> and\n      <strong>EV charging<\/strong>. Certified to IEC 60947-2 \/ UL 489, with rapid delivery and OEM options.\n    <\/p>\n\n    <div class=\"ky7-grid\">\n      <!-- 1 -->\n      <article class=\"ky7-card\">\n        <div class=\"ky7-ico\" aria-hidden=\"true\">\ud83c\udfed<\/div>\n        <h4>Factory-Direct &amp; Certified<\/h4>\n        <p>Own manufacturing with ISO 9001 QA. Batch test against <strong>IEC 60947-2 \/ UL 489<\/strong>.<\/p>\n      <\/article>\n\n      <!-- 2 -->\n      <article class=\"ky7-card\">\n        <div class=\"ky7-ico\" aria-hidden=\"true\">\u26a1<\/div>\n        <h4>High-Voltage Type Testing<\/h4>\n        <p>Arc-quenching tests for <strong>1000VDC \/ 125A<\/strong>. Routine inspection &amp; traceability reports.<\/p>\n      <\/article>\n\n      <!-- 3 -->\n      <article class=\"ky7-card\">\n        <div class=\"ky7-ico\" aria-hidden=\"true\">\ud83d\ude9a<\/div>\n        <h4>Fast Lead Time<\/h4>\n        <p>Stock on key poles. Typical delivery <strong>7\u201315 days<\/strong>. Global shipping support.<\/p>\n      <\/article>\n\n      <!-- 4 -->\n      <article class=\"ky7-card\">\n        <div class=\"ky7-ico\" aria-hidden=\"true\">\ud83e\udde9<\/div>\n        <h4>OEM \/ ODM Ready<\/h4>\n        <p>Private label, custom poles, voltage markings &amp; packaging to match your line.<\/p>\n      <\/article>\n\n      <!-- 5 -->\n      <article class=\"ky7-card\">\n        <div class=\"ky7-ico\" aria-hidden=\"true\">\ud83c\udf0d<\/div>\n        <h4>Global Project Experience<\/h4>\n        <p>Deployed in PV farms, C&amp;I rooftops, ESS containers &amp; EV hubs across 30+ regions.<\/p>\n      <\/article>\n    <\/div>\n\n    <div class=\"ky7-cta\">\n      <span class=\"ky7-btn\">Get a Quote<\/span>\n      <span class=\"ky7-btn ky7-btn-ghost\">Compare Models<\/span>\n    <\/div>\n  <\/div>\n\n  <style>\n    :root{\n      --ky7-brand:#B5220E; --ky7-text:#111827; --ky7-muted:#4B5563;\n      --ky7-bg:#F8FAFC; --ky7-card:#FFFFFF; --ky7-border:#E5E7EB;\n      --ky7-accent:#FD5732;\n    }\n    .ky-sec7{width:100%;background:linear-gradient(180deg,#f8fafc 0%,#eef2f7 100%);padding:56px 20px}\n    .ky7-wrap{max-width:1280px;margin:0 auto}\n    .ky7-title{margin:0 0 8px;text-align:center;font-weight:800;font-size:22px;color:var(--ky7-text)}\n    .ky7-intro{max-width:900px;margin:0 auto 24px;text-align:center;color:var(--ky7-muted);font-size:14px;line-height:1.7}\n\n    .ky7-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:16px}\n    @media(max-width:1200px){.ky7-grid{grid-template-columns:repeat(3,1fr)}}\n    @media(max-width:780px){.ky7-grid{grid-template-columns:repeat(2,1fr)}}\n    @media(max-width:520px){.ky7-grid{grid-template-columns:1fr}}\n\n    .ky7-card{\n      background:var(--ky7-card);border:1px solid var(--ky7-border);border-radius:16px;\n      padding:16px;display:flex;flex-direction:column;gap:8px;min-height:170px;\n      box-shadow:0 1px 2px rgba(0,0,0,.04);transition:transform .18s ease, box-shadow .18s ease\n    }\n    .ky7-card:hover{transform:translateY(-2px);box-shadow:0 10px 24px rgba(0,0,0,.08)}\n    .ky7-ico{font-size:22px;line-height:1}\n    .ky7-card h4{margin:0;font-size:16px;font-weight:800;color:var(--ky7-text)}\n    .ky7-card p{margin:0;color:#374151;font-size:13px;line-height:1.6}\n\n    .ky7-cta{display:flex;gap:10px;justify-content:center;margin-top:20px;flex-wrap:wrap}\n    .ky7-btn{\n      display:inline-block;padding:10px 14px;border-radius:12px;border:1px solid var(--ky7-brand);\n      background:var(--ky7-brand);color:#fff !important;font-weight:800;font-size:14px;text-decoration:none !important\n    }\n    .ky7-btn:hover{background:#8f1b0f;border-color:#8f1b0f;color:#fff !important}\n    .ky7-btn-ghost{background:#fff;color:var(--ky7-brand) !important}\n    .ky7-btn-ghost:hover{background:#fff1ef;border-color:#cc210e;color:#cc210e !important}\n  <\/style>\n<\/section>\n\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-stackable-columns stk-block-columns stk-block stk-f4ff7bc\" data-block-id=\"f4ff7bc\"><div class=\"stk-row stk-inner-blocks stk-block-content stk-content-align stk-f4ff7bc-column\">\n<div class=\"wp-block-stackable-column stk-block-column stk-column stk-block stk-33ca34b\" data-v=\"4\" data-block-id=\"33ca34b\"><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-33ca34b-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-33ca34b-inner-blocks\">\n<!-- ===== SEC8 \u2014 FAQ (Accordion style, English, 9 items) ===== -->\n<section id=\"sec-faq\" class=\"ky-faq\">\n  <div class=\"kyf-wrap\">\n    <h2 class=\"kyf-title\">DC MCB FAQ<\/h2>\n    <p class=\"kyf-intro\">\n      Frequently asked questions about <strong>DC MCB<\/strong> applications in \n      <strong>solar PV<\/strong>, <strong>ESS<\/strong> and <strong>EV charging<\/strong>. \n      Covering voltage, breaking capacity, <a href=\"\/dc-fuse\">fuse coordination<\/a>, \n      <a href=\"\/dc-spd\">SPD protection<\/a>, <a href=\"\/dc-switch-disconnector\">switch disconnectors<\/a>, \n      and compliance with <strong>IEC 60947-2<\/strong> \/ <strong>UL 489<\/strong>.\n    <\/p>\n\n    <div class=\"kyf-list\">\n      <!-- Q1 -->\n      <details class=\"kyf-q\">\n        <summary>1. What is a DC MCB and how does it work?<\/summary>\n        <div class=\"kyf-a\">\n          <p>A DC MCB (Miniature Circuit Breaker) provides overcurrent and short-circuit protection in direct current systems such as solar PV, ESS, and EV charging. It interrupts the DC arc safely to protect equipment and cables.<\/p>\n        <\/div>\n      <\/details>\n\n      <!-- Q2 -->\n      <details class=\"kyf-q\">\n        <summary>2. What are the typical applications of a DC MCB?<\/summary>\n        <div class=\"kyf-a\">\n          <p>They are used in <strong>solar rooftops<\/strong>, <strong>ground-mounted PV arrays<\/strong>, <strong>ESS battery racks<\/strong>, and <strong>EV charging hubs<\/strong> to ensure reliable circuit protection.<\/p>\n        <\/div>\n      <\/details>\n\n      <!-- Q3 -->\n      <details class=\"kyf-q\">\n        <summary>3. How is the rated voltage defined?<\/summary>\n        <div class=\"kyf-a\">\n          <p>The rated voltage increases with the number of poles: <strong>1P=250VDC<\/strong>, <strong>2P=500VDC<\/strong>, <strong>3P=750VDC<\/strong>, <strong>4P=1000VDC<\/strong>. This enables flexible design for different PV and ESS voltages.<\/p>\n        <\/div>\n      <\/details>\n\n      <!-- Q4 -->\n      <details class=\"kyf-q\">\n        <summary>4. Can DC MCBs be used in parallel?<\/summary>\n        <div class=\"kyf-a\">\n          <p>Not recommended unless approved by the manufacturer. Parallel poles may cause current imbalance. Instead, select the correct frame size such as <strong>KYDB-125<\/strong> and follow IEC 60947-2 guidelines.<\/p>\n        <\/div>\n      <\/details>\n\n      <!-- Q5 -->\n      <details class=\"kyf-q\">\n        <summary>5. How to size a DC MCB for PV strings?<\/summary>\n        <div class=\"kyf-a\">\n          <p>Choose a current rating above the PV string short-circuit current (Isc). Check breaking capacity, coordination with <a href=\"\/dc-fuse\">DC fuses<\/a>, and compliance with UL 489 \/ IEC 60947-2 standards.<\/p>\n        <\/div>\n      <\/details>\n\n      <!-- Q6 -->\n      <details class=\"kyf-q\">\n        <summary>6. What is the breaking capacity of Kuangya DC MCBs?<\/summary>\n        <div class=\"kyf-a\">\n          <p>Kuangya breakers are rated up to <strong>6kA at 1000VDC<\/strong>, ensuring safe disconnection under fault conditions for both residential and utility-scale PV systems.<\/p>\n        <\/div>\n      <\/details>\n\n      <!-- Q7 -->\n      <details class=\"kyf-q\">\n        <summary>7. What are the installation requirements?<\/summary>\n        <div class=\"kyf-a\">\n          <p>DIN-rail mounted per EN 60715. Use proper torque for terminals, MC4 leads or busbars for secure wiring, and maintain clear polarity labeling (+\/\u2212).<\/p>\n        <\/div>\n      <\/details>\n\n      <!-- Q8 -->\n      <details class=\"kyf-q\">\n        <summary>8. Are DC MCBs compliant with global standards?<\/summary>\n        <div class=\"kyf-a\">\n          <p>Yes. They comply with <a href=\"https:\/\/webstore.iec.ch\/publication\/2455\" target=\"_blank\" rel=\"nofollow noopener\">IEC 60947-2<\/a> and <a href=\"https:\/\/standardscatalog.ul.com\/standards\/en\/standard_489\" target=\"_blank\" rel=\"nofollow noopener\">UL 489<\/a>, meeting global certification requirements.<\/p>\n        <\/div>\n      <\/details>\n\n      <!-- Q9 -->\n      <details class=\"kyf-q\">\n        <summary>9. Can DC MCBs be combined with other protective devices?<\/summary>\n        <div class=\"kyf-a\">\n          <p>Yes, they are often coordinated with <a href=\"\/dc-spd\">SPDs<\/a>, <a href=\"\/dc-fuse\">fuses<\/a>, and <a href=\"\/dc-switch-disconnector\">switch disconnectors<\/a> inside <a href=\"\/pv-combiner-box\">PV combiner boxes<\/a> to form a complete protection stack.<\/p>\n        <\/div>\n      <\/details>\n    <\/div>\n  <\/div>\n\n  <style>\n    :root{\n      --kyf-brand:#B5220E; --kyf-text:#111827; --kyf-muted:#4B5563;\n      --kyf-border:#E5E7EB; --kyf-bg:#FFFFFF;\n    }\n    .ky-faq{width:100%;padding:56px 20px;background:#fff}\n    .kyf-wrap{max-width:980px;margin:0 auto}\n    .kyf-title{text-align:center;font-size:24px;font-weight:800;color:var(--kyf-text);margin-bottom:6px}\n    .kyf-intro{text-align:center;font-size:14px;color:var(--kyf-muted);line-height:1.6;margin-bottom:22px}\n    .kyf-intro a{color:var(--kyf-brand);text-decoration:underline;font-weight:600}\n\n    .kyf-q{border:1px solid var(--kyf-border);border-radius:12px;margin:10px 0;background:#fff;box-shadow:0 1px 2px rgba(0,0,0,0.04)}\n    .kyf-q summary{\n      cursor:pointer;padding:14px 16px;font-size:14px;font-weight:700;color:var(--kyf-text);\n      list-style:none;outline:none;display:flex;justify-content:space-between;align-items:center\n    }\n    .kyf-q summary::after{\n      content:\"+\";font-weight:800;color:var(--kyf-brand);transition:.2s\n    }\n    .kyf-q[open] summary::after{content:\"\u2212\"}\n    .kyf-q[open] summary{background:#fafafa;border-radius:12px 12px 0 0}\n    .kyf-a{padding:14px 16px;font-size:13px;color:#374151;line-height:1.6;background:#fff;border-top:1px solid var(--kyf-border);border-radius:0 0 12px 12px}\n    .kyf-a a{color:var(--kyf-brand);text-decoration:underline}\n  <\/style>\n<\/section>\n<\/div><\/div><\/div>\n<\/div><\/div>\n","protected":false},"excerpt":{"rendered":"<p>DC MCB (Miniature Circuit Breaker) for Solar, ESS &#038; EV Systems Safe and reliable DC circuit protection up to 1000V \/ 125A Wide range: 1P to 4P, up to 1000V \/ 125A Safe arc extinguishing for DC circuits Ideal for Solar PV, ESS, and EV charging Compliant with IEC 60947-2 \/ UL standards Compare Models [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-686","page","type-page","status-publish","hentry"],"blocksy_meta":{"has_hero_section":"disabled","styles_descriptor":{"styles":{"desktop":"","tablet":"","mobile":""},"google_fonts":[],"version":6}},"_links":{"self":[{"href":"https:\/\/cnkuangya.com\/ar\/wp-json\/wp\/v2\/pages\/686","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cnkuangya.com\/ar\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/cnkuangya.com\/ar\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/cnkuangya.com\/ar\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/cnkuangya.com\/ar\/wp-json\/wp\/v2\/comments?post=686"}],"version-history":[{"count":34,"href":"https:\/\/cnkuangya.com\/ar\/wp-json\/wp\/v2\/pages\/686\/revisions"}],"predecessor-version":[{"id":2189,"href":"https:\/\/cnkuangya.com\/ar\/wp-json\/wp\/v2\/pages\/686\/revisions\/2189"}],"wp:attachment":[{"href":"https:\/\/cnkuangya.com\/ar\/wp-json\/wp\/v2\/media?parent=686"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}