{"id":4204,"date":"2026-08-04T15:37:21","date_gmt":"2026-08-04T07:37:21","guid":{"rendered":"https:\/\/cnkuangya.com\/?page_id=4204"},"modified":"2026-08-04T16:44:18","modified_gmt":"2026-08-04T08:44:18","slug":"mccb","status":"publish","type":"page","link":"https:\/\/cnkuangya.com\/es\/mccb\/","title":{"rendered":"DC MCCB | 250V 250A Moulded Case Circuit Breaker"},"content":{"rendered":"\n<style>\n.ky-mccb{--navy:#102a43;--blue:#1464a5;--cyan:#eaf6ff;--orange:#f59e0b;--line:#dbe7f0;color:#243b53;font-family:inherit}.ky-mccb *{box-sizing:border-box}.ky-mccb .hero{display:grid;grid-template-columns:1.15fr .85fr;gap:42px;align-items:center;padding:54px;border-radius:22px;background:linear-gradient(135deg,#0b2540,#174f7e);color:#fff;overflow:hidden}.ky-mccb .eyebrow{display:inline-block;padding:7px 12px;border-radius:999px;background:#ffffff18;border:1px solid #ffffff35;font-size:13px;font-weight:700;letter-spacing:.06em;text-transform:uppercase}.ky-mccb h2{color:var(--navy);font-size:34px;line-height:1.2;margin:0 0 14px}.ky-mccb .hero h2{color:#fff;font-size:44px;margin:18px 0}.ky-mccb .hero p{font-size:18px;line-height:1.7;color:#e9f4fb}.ky-mccb .hero img{width:100%;max-height:480px;object-fit:contain;background:#fff;border-radius:18px;padding:18px}.ky-mccb .btns{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}.ky-mccb .btn{display:inline-block;padding:13px 20px;border-radius:9px;background:var(--orange);color:#17202a!important;text-decoration:none;font-weight:800}.ky-mccb .btn.alt{background:#fff;color:var(--navy)!important}.ky-mccb .facts{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin:24px 0 58px}.ky-mccb .fact{padding:18px;border:1px solid var(--line);border-radius:14px;background:#fff;box-shadow:0 8px 22px #163a5f0d}.ky-mccb .fact strong{display:block;color:var(--blue);font-size:23px}.ky-mccb .section{margin:58px 0}.ky-mccb .lead{font-size:18px;line-height:1.75;max-width:920px}.ky-mccb .grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.ky-mccb .card{padding:24px;border-radius:16px;background:var(--cyan);border:1px solid #cfe9fa}.ky-mccb .card h3{margin:0 0 8px;color:var(--navy);font-size:20px}.ky-mccb .card p,.ky-mccb li{line-height:1.65}.ky-mccb table{width:100%;border-collapse:collapse;background:#fff}.ky-mccb th,.ky-mccb td{padding:14px;border:1px solid var(--line);text-align:left}.ky-mccb th{background:var(--navy);color:#fff}.ky-mccb .check{padding:30px;border-radius:18px;background:#f7fafc;border-left:5px solid var(--orange)}.ky-mccb .check ul{columns:2;gap:40px}.ky-mccb details{border:1px solid var(--line);border-radius:10px;padding:15px 18px;margin:10px 0;background:#fff}.ky-mccb summary{cursor:pointer;font-weight:800;color:var(--navy)}.ky-mccb .cta{padding:38px;border-radius:18px;background:linear-gradient(135deg,#eaf6ff,#fff6df);text-align:center}.ky-mccb .note{font-size:14px;color:#627d98}.ky-mccb .linkrow{display:flex;gap:14px;flex-wrap:wrap}.ky-mccb .linkrow a{color:var(--blue);font-weight:700}@keyframes kyMccbRise{from{opacity:0;transform:translateY(18px)}to{opacity:1;transform:translateY(0)}}@keyframes kyMccbFloat{0%,100%{transform:translateY(0)}50%{transform:translateY(-7px)}}@keyframes kyMccbGradient{0%{background-position:0% 50%}50%{background-position:100% 50%}100%{background-position:0% 50%}}.ky-mccb .hero>div:first-child{animation:kyMccbRise .7s ease-out both}.ky-mccb .hero>div:last-child{animation:kyMccbRise .8s .12s ease-out both}.ky-mccb .hero img{animation:kyMccbFloat 5.5s 1s ease-in-out infinite}.ky-mccb .fact,.ky-mccb .card,.ky-mccb .btn{transition:transform .22s ease,box-shadow .22s ease,background-color .22s ease}.ky-mccb .fact:hover,.ky-mccb .card:hover{transform:translateY(-5px);box-shadow:0 14px 28px rgba(16,42,67,.13)}.ky-mccb .btn:hover{transform:translateY(-2px);box-shadow:0 9px 20px rgba(16,42,67,.18)}.ky-mccb .btn:focus-visible{outline:3px solid #fff;outline-offset:3px;box-shadow:0 0 0 5px #1464a5}.ky-mccb .cta{background-size:200% 200%;animation:kyMccbGradient 10s ease infinite}@media(max-width:800px){.ky-mccb .hero{grid-template-columns:1fr;padding:28px}.ky-mccb .hero h2{font-size:34px}.ky-mccb .facts,.ky-mccb .grid3{grid-template-columns:1fr 1fr}.ky-mccb .check ul{columns:1}}@media(max-width:520px){.ky-mccb .facts,.ky-mccb .grid3{grid-template-columns:1fr}}\n@media(max-width:520px){.ky-mccb .hero img{animation-duration:7s}.ky-mccb .fact:hover,.ky-mccb .card:hover{transform:none}}@media(prefers-reduced-motion:reduce){.ky-mccb *,.ky-mccb *::before,.ky-mccb *::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}}<\/style>\n<div class=\"ky-mccb\">\n<section class=\"hero\">\n<div><span class=\"eyebrow\">KUANGYA DC Circuit Protection<\/span><h2>DC MCCB for Battery, ESS and Low-Voltage PV Circuits<\/h2><p>MCCB-250DC is a compact 1-pole moulded case circuit breaker rated 250A at 250V DC, with a nameplate Icu of 25kA. Use this page to review confirmed ratings, selection checks and project information before requesting a quotation.<\/p><div class=\"btns\"><a class=\"btn\" href=\"\/product\/250a-250v-dc-mccb-1p-25ka\/\">View MCCB-250DC<\/a><a class=\"btn alt\" href=\"\/contact-us\/\">Request a Project Quote<\/a><\/div><\/div>\n<div><img decoding=\"async\" src=\"https:\/\/cnkuangya.com\/wp-content\/uploads\/2026\/08\/download-600x600.jpg\" alt=\"KUANGYA MCCB-250DC 1P 250A 250V DC moulded case circuit breaker\"><\/div>\n<\/section>\n<div class=\"facts\"><div class=\"fact\"><strong>250V DC<\/strong>Rated operational voltage<\/div><div class=\"fact\"><strong>250A<\/strong>Rated current<\/div><div class=\"fact\"><strong>25kA<\/strong>Ultimate breaking capacity (Icu)<\/div><div class=\"fact\"><strong>1 Pole<\/strong>Compact DC format<\/div><\/div>\n<section class=\"section\"><h2>What Is a DC MCCB?<\/h2><p class=\"lead\">A DC moulded case circuit breaker provides switching and overcurrent protection for a correctly engineered direct-current circuit. Compared with a miniature circuit breaker, an MCCB is generally selected where higher current, higher fault-duty or more robust panel integration is required. DC arc interruption is demanding, so voltage, polarity, pole arrangement and prospective short-circuit current must be verified for the exact application.<\/p><\/section>\n<section class=\"section\"><h2>MCCB-250DC Confirmed Specifications<\/h2><table><tbody><tr><th>Parameter<\/th><th>Confirmed value<\/th><th>Selection meaning<\/th><\/tr><tr><td>Product type<\/td><td>DC moulded case circuit breaker<\/td><td>For suitably engineered DC circuits<\/td><\/tr><tr><td>Model<\/td><td>MCCB-250DC<\/td><td>KUANGYA product designation<\/td><\/tr><tr><td>Number of poles<\/td><td>1P<\/td><td>Does not automatically isolate every live conductor<\/td><\/tr><tr><td>Rated current (In)<\/td><td>250A<\/td><td>Check conductor ampacity, enclosure temperature and derating<\/td><\/tr><tr><td>Rated operational voltage (Ue)<\/td><td>250V DC<\/td><td>Maximum operating voltage must remain within the device rating<\/td><\/tr><tr><td>Ultimate breaking capacity (Icu)<\/td><td>25kA<\/td><td>Available fault current must be assessed at the installation point<\/td><\/tr><tr><td>Service breaking capacity (Ics)<\/td><td>75% of Icu<\/td><td>Confirm project duty and coordination requirements<\/td><\/tr><\/tbody><\/table><p class=\"note\">Values above are based on the product nameplate and current product page. Confirm the offered model, documentation and applicable certification scope before ordering.<\/p><\/section>\n<section class=\"section\"><h2>Typical Applications<\/h2><div class=\"grid3\"><div class=\"card\"><h3>Battery &#038; ESS<\/h3><p>DC distribution and protection in battery banks and energy-storage cabinets after calculation of maximum voltage and fault current.<\/p><\/div><div class=\"card\"><h3>Low-Voltage Solar PV<\/h3><p>PV circuits whose maximum operating and open-circuit voltage remain within the device rating under the lowest expected temperature.<\/p><\/div><div class=\"card\"><h3>Industrial DC Distribution<\/h3><p>Control power, charging equipment and DC panels requiring a 250A moulded-case protective device.<\/p><\/div><\/div><\/section>\n<section class=\"section check\"><h2>Information Needed for MCCB Selection<\/h2><p>Send these values with your enquiry so our team can check the model more efficiently:<\/p><ul><li>Maximum continuous DC system voltage<\/li><li>Normal load current and conductor size<\/li><li>Calculated prospective short-circuit current<\/li><li>Battery, ESS, PV or industrial application<\/li><li>Required poles and isolation arrangement<\/li><li>Ambient temperature and enclosure conditions<\/li><li>Upstream\/downstream protective devices<\/li><li>Quantity, destination country and OEM needs<\/li><\/ul><div class=\"btns\"><a class=\"btn\" href=\"https:\/\/wa.me\/8613676769183?text=Hello%20KUANGYA%2C%20I%20need%20a%20DC%20MCCB%20quotation.%20System%20voltage%3A%20___%20VDC%3B%20load%20current%3A%20___%20A%3B%20fault%20current%3A%20___%20kA%3B%20quantity%3A%20___.\" rel=\"noopener\">Send Parameters by WhatsApp<\/a><a class=\"btn alt\" href=\"mailto:info@cnkuangya.com?subject=DC%20MCCB%20Project%20Enquiry\">Email Project Details<\/a><\/div><\/section>\n<section class=\"section\"><h2>DC MCCB vs DC MCB<\/h2><table><thead><tr><th>Selection point<\/th><th>DC MCCB<\/th><th>DC MCB<\/th><\/tr><\/thead><tbody><tr><td>Typical use<\/td><td>Higher-current feeders and panel protection<\/td><td>Lower-current branch circuits<\/td><\/tr><tr><td>Form factor<\/td><td>Moulded-case, panel mounted<\/td><td>Compact modular\/DIN-rail format<\/td><\/tr><tr><td>Selection priority<\/td><td>Current, voltage, fault duty, poles and coordination<\/td><td>Current, voltage, trip curve, fault duty and poles<\/td><\/tr><\/tbody><\/table><p class=\"note\">This comparison is general. Final device selection must be based on the exact manufacturer data and project design.<\/p><\/section>\n<section class=\"section\"><h2>Frequently Asked Questions<\/h2><details><summary>Can a 250V DC MCCB be used on a higher-voltage system?<\/summary><p>No. The maximum operating voltage, including credible system conditions, must not exceed the device\u2019s stated DC rating. Use a model and pole arrangement specifically documented for the higher voltage.<\/p><\/details><details><summary>Is a 1P MCCB a complete DC isolator?<\/summary><p>Not automatically. The required number of poles and isolation arrangement depend on the earthing system, live conductors, equipment instructions and local rules.<\/p><\/details><details><summary>Is 25kA always sufficient?<\/summary><p>Only when the calculated prospective short-circuit current at the installation point, together with the required coordination and duty, is within the device\u2019s documented capability.<\/p><\/details><details><summary>What should I send for an accurate quotation?<\/summary><p>Provide system voltage, load current, calculated fault current, application, pole requirement, quantity, destination country and any OEM or certification requirements.<\/p><\/details><\/section>\n<section class=\"section\"><h2>Related Protection Products<\/h2><div class=\"linkrow\"><a href=\"\/dc-mcb\/\">DC MCB<\/a><a href=\"\/dc-fuse\/\">DC Fuse<\/a><a href=\"\/dc-switch-disconnector\/\">DC Switch Disconnector<\/a><a href=\"\/pv-combiner-box\/\">PV Combiner Box<\/a><a href=\"\/blog\/\">Technical Guides<\/a><\/div><\/section>\n<section class=\"cta\"><h2>Need Model Confirmation or OEM Pricing?<\/h2><p>Tell KUANGYA your electrical parameters and purchasing requirements. We will help confirm the suitable model before quotation.<\/p><div class=\"btns\" style=\"justify-content:center\"><a class=\"btn\" href=\"\/contact-us\/\">Contact KUANGYA<\/a><a class=\"btn alt\" href=\"\/product\/250a-250v-dc-mccb-1p-25ka\/\">Open Product Details<\/a><\/div><\/section>\n<\/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;Productos anteriores&quot;,&quot;ariaLabelNext&quot;:&quot;Productos siguientes&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\" 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product_tag-battery-circuit-protection product_tag-dc-mccb product_tag-moulded-case-circuit-breaker 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='woocommerce\/products::{\"productId\":4187,\"variationId\":null}'\n\t\t\t\tdata-wp-key=\"product-item-4187\"\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\/es\/product\/250a-250v-dc-mccb-1p-25ka\/\" style=\"\" data-wp-on--click=\"woocommerce\/product-collection::actions.viewProduct\"><img decoding=\"async\" width=\"300\" height=\"300\" src=\"https:\/\/cnkuangya.com\/wp-content\/uploads\/2026\/08\/download-300x300.jpg\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"KUANGYA MCCB-250DC 1P 250A 250V DC moulded case circuit breaker with 25kA breaking capacity\" data-testid=\"product-image\" data-image-id=\"4188\" style=\"object-fit:cover;\" loading=\"lazy\" srcset=\"https:\/\/cnkuangya.com\/wp-content\/uploads\/2026\/08\/download-300x300.jpg 300w, https:\/\/cnkuangya.com\/wp-content\/uploads\/2026\/08\/download-1024x1024.jpg 1024w, https:\/\/cnkuangya.com\/wp-content\/uploads\/2026\/08\/download-150x150.jpg 150w, https:\/\/cnkuangya.com\/wp-content\/uploads\/2026\/08\/download-768x768.jpg 768w, https:\/\/cnkuangya.com\/wp-content\/uploads\/2026\/08\/download-12x12.jpg 12w, https:\/\/cnkuangya.com\/wp-content\/uploads\/2026\/08\/download-600x600.jpg 600w, https:\/\/cnkuangya.com\/wp-content\/uploads\/2026\/08\/download-100x100.jpg 100w, https:\/\/cnkuangya.com\/wp-content\/uploads\/2026\/08\/download.jpg 1254w\" 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=\"line-height:1.4;margin-bottom:0.75rem;margin-top:0\" class=\"has-text-align-center wp-block-post-title has-medium-font-size\"><a data-wp-on--click=\"woocommerce\/product-collection::actions.viewProduct\" href=\"https:\/\/cnkuangya.com\/es\/product\/250a-250v-dc-mccb-1p-25ka\/\" target=\"_self\">KUANGYA MCCB-250DC 1P 250A 250V DC Moulded Case Circuit Breaker 25kA<\/a><\/h2>\n\n<div data-block-name=\"woocommerce\/product-price\" data-font-size=\"small\" data-is-descendent-of-query-loop=\"true\" data-text-align=\"center\" class=\"has-font-size has-small-font-size has-text-align-center wp-block-woocommerce-product-price\" ><div class=\"wc-block-components-product-price wc-block-grid__product-price\" >\n\t\t\t\t\t\n\t\t\t\t<\/div><\/div>\n\n<div 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Use this page to review confirmed ratings, selection checks and project information before requesting a quotation. View MCCB-250DCRequest a Project Quote 250V [&hellip;]<\/p>\n","protected":false},"author":4,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-4204","page","type-page","status-publish","hentry"],"blocksy_meta":[],"_links":{"self":[{"href":"https:\/\/cnkuangya.com\/es\/wp-json\/wp\/v2\/pages\/4204","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cnkuangya.com\/es\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/cnkuangya.com\/es\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/cnkuangya.com\/es\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/cnkuangya.com\/es\/wp-json\/wp\/v2\/comments?post=4204"}],"version-history":[{"count":5,"href":"https:\/\/cnkuangya.com\/es\/wp-json\/wp\/v2\/pages\/4204\/revisions"}],"predecessor-version":[{"id":4214,"href":"https:\/\/cnkuangya.com\/es\/wp-json\/wp\/v2\/pages\/4204\/revisions\/4214"}],"wp:attachment":[{"href":"https:\/\/cnkuangya.com\/es\/wp-json\/wp\/v2\/media?parent=4204"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}