{"id":1118,"date":"2025-09-05T09:03:25","date_gmt":"2025-09-05T09:03:25","guid":{"rendered":"https:\/\/cnkuangya.com\/?post_type=product&#038;p=1118"},"modified":"2025-10-07T12:19:38","modified_gmt":"2025-10-07T12:19:38","slug":"dc-circuit-breaker-3p-750v-125a-kydb125","status":"publish","type":"product","link":"https:\/\/cnkuangya.com\/ar\/product\/dc-circuit-breaker-3p-750v-125a-kydb125\/","title":{"rendered":"\u0642\u0627\u0637\u0639 \u062f\u0627\u0631\u0629 \u062a\u064a\u0627\u0631 \u0645\u0633\u062a\u0645\u0631 3P 750 \u0641\u0648\u0644\u062a 125 \u0623\u0645\u0628\u064a\u0631 | KYDB-125-3P"},"content":{"rendered":"<article class=\"product-page kydb-125-3p\">\n<section id=\"overview\">\n<h2>\u0644\u0645\u062d\u0629 \u0639\u0627\u0645\u0629<\/h2>\n<p>\u0625\u0646 <strong>\u0642\u0627\u0637\u0639 \u062f\u0627\u0626\u0631\u0629 \u062a\u064a\u0627\u0631 \u0645\u062a\u0631\u062f\u062f 3 \u0641\u0648\u0644\u062a 750 \u0641\u0648\u0644\u062a 125 \u0623\u0645\u0628\u064a\u0631<\/strong> (model <strong>KYDB-125-3P<\/strong>) is a three-pole miniature DC breaker designed for large-scale PV arrays, ESS DC buses, and industrial DC distribution panels. Rated at <strong>750VDC<\/strong> with current options of <strong>63A \/ 80A \/ 100A \/ 125A<\/strong>, it delivers overload and short-circuit protection with a <strong>6 \u0643\u064a\u0644\u0648 \u0623\u0645\u0628\u064a\u0631<\/strong> breaking capacity. With Ui 690V and Uimp 6kV, it provides robust insulation and long service life.<\/p>\n<\/section>\n<section id=\"features\">\n<h2>\u0627\u0644\u0645\u064a\u0632\u0627\u062a \u0627\u0644\u0631\u0626\u064a\u0633\u064a\u0629<\/h2>\n<ul>\n<li><strong>Rated voltage:<\/strong> 750VDC (3P); <strong>frame current:<\/strong> 125A<\/li>\n<li><strong>Current options:<\/strong> 63A \/ 80A \/ 100A \/ 125A<\/li>\n<li><strong>Breaking capacity:<\/strong> 6kA (Icn\/Ics)<\/li>\n<li><strong>Trip characteristics:<\/strong> C \/ D, thermal-magnetic<\/li>\n<li><strong>Insulation &amp; impulse:<\/strong> Ui 690V; Uimp 6kV<\/li>\n<li><strong>Endurance:<\/strong> Mechanical life 20,000 ops; Electrical life 2,000 ops<\/li>\n<li><strong>\u0627\u0644\u0627\u0645\u062a\u062b\u0627\u0644:<\/strong> <a href=\"https:\/\/www.iec.ch\/\" target=\"_blank\" rel=\"noopener\">IEC 60947-2<\/a>, GB\/T 14048.2; CE &amp; <a href=\"https:\/\/www.ul.com\/\" target=\"_blank\" rel=\"noopener\">UL<\/a><\/li>\n<li>Works with <a href=\"\/ar\/pv-combiner-box\/\">\u0635\u0646\u0627\u062f\u064a\u0642 \u0627\u0644\u062a\u062c\u0645\u064a\u0639 \u0627\u0644\u0643\u0647\u0631\u0648\u0636\u0648\u0626\u064a\u0629<\/a>, <a href=\"\/ar\/dc-fuse\/\">\u0635\u0645\u0627\u0645\u0627\u062a \u0627\u0644\u062a\u064a\u0627\u0631 \u0627\u0644\u0645\u0633\u062a\u0645\u0631<\/a>, <a href=\"\/ar\/dc-spd\/\">DC SPDs<\/a>, \u0648 <a href=\"\/ar\/dc-switch-disconnector\/\">\u0645\u0641\u0627\u062a\u064a\u062d \u0641\u0635\u0644 \u0627\u0644\u062a\u064a\u0627\u0631 \u0627\u0644\u0645\u0633\u062a\u0645\u0631<\/a><\/li>\n<\/ul>\n<\/section>\n<section id=\"specifications\">\n<h2>\u0627\u0644\u0645\u0648\u0627\u0635\u0641\u0627\u062a<\/h2>\n<table>\n<tbody>\n<tr>\n<th>\u0627\u0644\u0637\u0631\u0627\u0632<\/th>\n<td>KYDB-125-3P<\/td>\n<\/tr>\n<tr>\n<th>\u0627\u0644\u0623\u0639\u0645\u062f\u0629<\/th>\n<td>3P<\/td>\n<\/tr>\n<tr>\n<th>\u0627\u0644\u062a\u064a\u0627\u0631 \u0627\u0644\u0645\u0642\u062f\u0631 (\u0641\u064a)<\/th>\n<td>63A \/ 80A \/ 100A \/ 125A<\/td>\n<\/tr>\n<tr>\n<th>\u0627\u0644\u062c\u0647\u062f \u0627\u0644\u0645\u0642\u0646\u0646 (Ue)<\/th>\n<td>750VDC<\/td>\n<\/tr>\n<tr>\n<th>Rated Insulation Voltage (Ui)<\/th>\n<td>690V<\/td>\n<\/tr>\n<tr>\n<th>Impulse Withstand Voltage (Uimp)<\/th>\n<td>6kV<\/td>\n<\/tr>\n<tr>\n<th>Breaking Capacity (Icn\/Ics)<\/th>\n<td>6kA \/ 6kA<\/td>\n<\/tr>\n<tr>\n<th>Trip Characteristics<\/th>\n<td>C \/ D<\/td>\n<\/tr>\n<tr>\n<th>\u0627\u0644\u062d\u064a\u0627\u0629 \u0627\u0644\u0645\u064a\u0643\u0627\u0646\u064a\u0643\u064a\u0629<\/th>\n<td>20,000 operations<\/td>\n<\/tr>\n<tr>\n<th>Electrical Life<\/th>\n<td>2,000 operations<\/td>\n<\/tr>\n<tr>\n<th>\u0627\u0644\u062a\u0631\u0643\u064a\u0628<\/th>\n<td>DIN-rail, width 54mm (18mm \u00d7 3 poles)<\/td>\n<\/tr>\n<tr>\n<th>\u0627\u0644\u0645\u0639\u0627\u064a\u064a\u0631<\/th>\n<td>IEC 60947-2, GB\/T 14048.2<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/section>\n<section id=\"diagram\">\n<h2>Wiring Diagram &amp; Dimensions<\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-1113\" src=\"https:\/\/cnkuangya.com\/wp-content\/uploads\/2025\/09\/125A-dimension-300x191.png\" alt=\"125A-MCB DIMENSION\" width=\"300\" height=\"191\" srcset=\"https:\/\/cnkuangya.com\/wp-content\/uploads\/2025\/09\/125A-dimension-300x191.png 300w, https:\/\/cnkuangya.com\/wp-content\/uploads\/2025\/09\/125A-dimension-768x490.png 768w, https:\/\/cnkuangya.com\/wp-content\/uploads\/2025\/09\/125A-dimension-600x383.png 600w, https:\/\/cnkuangya.com\/wp-content\/uploads\/2025\/09\/125A-dimension.png 904w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/p>\n<p>&nbsp;<\/p>\n<\/section>\n<section id=\"applications\">\n<h2>\u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a<\/h2>\n<ul>\n<li>Large-scale solar PV arrays<\/li>\n<li>Energy storage system (ESS) DC buses<\/li>\n<li>Industrial DC distribution panels<\/li>\n<li>Telecom and infrastructure DC systems<\/li>\n<\/ul>\n<\/section>\n<section id=\"faq\">\n<h2>\u0627\u0644\u0623\u0633\u0626\u0644\u0629 \u0627\u0644\u0634\u0627\u0626\u0639\u0629<\/h2>\n<h3>Q1: What is a dc circuit breaker 3p 750v 125a?<\/h3>\n<p>A1: It is a three-pole miniature DC breaker rated at 750VDC and up to 125A, designed for overload and short-circuit protection.<\/p>\n<h3>Q2: What current ratings are available?<\/h3>\n<p>A2: KYDB-125-3P supports 63A, 80A, 100A, and 125A.<\/p>\n<h3>Q3: What is the breaking capacity?<\/h3>\n<p>A3: The breaker provides 6kA breaking capacity (Icn\/Ics).<\/p>\n<h3>Q4: Can it be used in PV and ESS systems?<\/h3>\n<p>A4: Yes, this <strong>\u0642\u0627\u0637\u0639 \u062f\u0627\u0626\u0631\u0629 \u062a\u064a\u0627\u0631 \u0645\u062a\u0631\u062f\u062f 3 \u0641\u0648\u0644\u062a 750 \u0641\u0648\u0644\u062a 125 \u0623\u0645\u0628\u064a\u0631<\/strong> is commonly applied in <a href=\"\/ar\/pv-combiner-box\/\">\u0635\u0646\u0627\u062f\u064a\u0642 \u0627\u0644\u062a\u062c\u0645\u064a\u0639 \u0627\u0644\u0643\u0647\u0631\u0648\u0636\u0648\u0626\u064a\u0629<\/a> and ESS DC systems.<\/p>\n<h3>Q5: Which standards does KYDB-125-3P comply with?<\/h3>\n<p>A5: It complies with IEC 60947-2, GB\/T 14048.2, CE, and UL certifications.<\/p>\n<\/section>\n<section id=\"cta\">\n<h2>\u0627\u062d\u0635\u0644 \u0639\u0644\u0649 \u0639\u0631\u0636 \u0623\u0633\u0639\u0627\u0631<\/h2>\n<p>Contact Kuangya for datasheets, wiring diagrams, or OEM customization of KYDB-125-3P.<\/p>\n<p><a class=\"btn\" href=\"\/ar\/contact-us\/\">Contact Us<\/a><\/p>\n<\/section>\n<\/article>","protected":false},"excerpt":{"rendered":"<ul>\n<li data-start=\"296\" data-end=\"399\">\n<p data-start=\"298\" data-end=\"399\">Kuangya KYDB-125-3P is a <strong data-start=\"323\" data-end=\"358\">\u0642\u0627\u0637\u0639 \u062f\u0627\u0626\u0631\u0629 \u062a\u064a\u0627\u0631 \u0645\u062a\u0631\u062f\u062f 3 \u0641\u0648\u0644\u062a 750 \u0641\u0648\u0644\u062a 125 \u0623\u0645\u0628\u064a\u0631<\/strong>, available in 63A \/ 80A \/ 100A \/ 125A.<\/p>\n<\/li>\n<li data-start=\"400\" data-end=\"498\">\n<p data-start=\"402\" data-end=\"498\">Provides triple-pole overload &amp; short-circuit protection at 750VDC with 6kA breaking capacity.<\/p>\n<\/li>\n<li data-start=\"499\" data-end=\"582\">\n<p data-start=\"501\" data-end=\"582\">IEC 60947-2 certified, DIN-rail breaker for PV, ESS, and industrial DC systems.<\/p>\n<\/li>\n<\/ul>","protected":false},"featured_media":2096,"comment_status":"open","ping_status":"closed","template":"","meta":[],"product_brand":[],"product_cat":[28],"product_tag":[],"class_list":{"0":"post-1118","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-dc-mcb","8":"first","9":"instock","10":"shipping-taxable","11":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/cnkuangya.com\/ar\/wp-json\/wp\/v2\/product\/1118","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cnkuangya.com\/ar\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/cnkuangya.com\/ar\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/cnkuangya.com\/ar\/wp-json\/wp\/v2\/comments?post=1118"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cnkuangya.com\/ar\/wp-json\/wp\/v2\/media\/2096"}],"wp:attachment":[{"href":"https:\/\/cnkuangya.com\/ar\/wp-json\/wp\/v2\/media?parent=1118"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/cnkuangya.com\/ar\/wp-json\/wp\/v2\/product_brand?post=1118"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/cnkuangya.com\/ar\/wp-json\/wp\/v2\/product_cat?post=1118"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/cnkuangya.com\/ar\/wp-json\/wp\/v2\/product_tag?post=1118"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}