{"id":3486,"date":"2026-06-10T09:00:00","date_gmt":"2026-06-10T01:00:00","guid":{"rendered":"https:\/\/eqsvq3fzct.wpdns.site\/blog\/dc-mccb-dc-molded-case-circuit-breaker-basic-guide\/"},"modified":"2026-10-20T10:47:25","modified_gmt":"2026-10-20T02:47:25","slug":"dc-mccb-dc-%eb%aa%b0%eb%93%9c-%ec%bc%80%ec%9d%b4%ec%8a%a4-%ed%9a%8c%eb%a1%9c-%ec%b0%a8%eb%8b%a8%ea%b8%b0-%ea%b8%b0%eb%b3%b8-%ea%b0%80%ec%9d%b4%eb%93%9c","status":"publish","type":"post","link":"https:\/\/w9-group.com\/ko\/blog\/dc-mccb-dc-molded-case-circuit-breaker-basic-guide\/","title":{"rendered":"DC MCCB(DC \ubab0\ub4dc \ucf00\uc774\uc2a4 \ud68c\ub85c \ucc28\ub2e8\uae30) \uae30\ubcf8 \uac00\uc774\ub4dc"},"content":{"rendered":"<p>DC MCCB\uc5d0 \ub300\ud55c \uac80\ud1a0\ub294 \uc815\uaca9\uc804\ub958\uc640 DC \ud45c\uae30\ub9cc\uc73c\ub85c\ub294 \ucda9\ubd84\ud558\uc9c0 \uc54a\uc2b5\ub2c8\ub2e4. \uac00\uc6a9 \uc804\uc555, \uc804\uc6d0 \uce21 \uace0\uc7a5 \ud2b9\uc131, \uadf9\uc131 \ubc0f \uc2b9\uc778\ub41c \uc811\uc18d \ubc29\uc2dd\uc774 \ud574\ub2f9 \ucc28\ub2e8\uae30\uac00 \uc2e4\uc81c \ud68c\ub85c\ub97c \ucc28\ub2e8\ud560 \uc218 \uc788\ub294\uc9c0\ub97c \uacb0\uc815\ud569\ub2c8\ub2e4.<\/p>\n<p><strong>DC \uc544\ud06c \ucc28\ub2e8<\/strong> \uad50\ub958\uc640 \ub2ec\ub9ac \uc9c1\ub958\uc5d0\uc11c\ub294 \uc790\uc5f0\uc801\uc778 \uc804\ub958 \uc601\uc810\uc774 \uc874\uc7ac\ud558\uc9c0 \uc54a\uc2b5\ub2c8\ub2e4. \ub530\ub77c\uc11c \uc720\ud6a8\ud55c \uc9c1\ub958 \uc815\uaca9\uc740 \ud2b9\uc815 \uc7a5\uce58, \uc804\uc555 \ubc0f \uc811\uc18d \ubc29\uc2dd\uc5d0 \ub530\ub77c \uacb0\uc815\ub429\ub2c8\ub2e4. \uad50\ub958 \uc815\uaca9\uc744 \ucd94\uc815\ub41c \uacc4\uc218\ub85c \ubcc0\ud658\ud560 \uc218\ub294 \uc5c6\uc2b5\ub2c8\ub2e4.<\/p>\n<p>\uac80\ud1a0\ud558\uae30 <a href=\"https:\/\/w9-group.com\/ko\/%ed%83%9c%ec%96%91%ea%b4%91%eb%b0%9c%ec%a0%84\/\">\uad11\uc804\uc9c0 \ubcf4\ud638 \ubc94\uc704<\/a> \ucd5c\ub300 DC \uc804\uc555 \ubc0f \ud5c8\uc6a9\ub41c \uadf9 \uc5f0\uacb0\uc5d0 \ub300\ud558\uc5ec.<\/p>\n<h2>\uc18c\uc2a4 \uc804\uc555\uacfc \ucd5c\ub300 \uc804\uc555\uc744 \uc815\uc758\ud558\uc2ed\uc2dc\uc624.<\/h2>\n<p>PV\uc758 \uacbd\uc6b0, \uc124\uc815\ud558\ub2e4 <strong>\ucd5c\ub300 \uc791\ub3d9 \uc804\uc555<\/strong> \uc124\uacc4 \uc870\uac74 \ubc0f \ubcd1\ub82c \uc804\uc6d0 \uacf5\uae09 \uc7a5\uce58\uc758 \uae30\uc5ec\ub97c \uace0\ub824\ud558\uc5ec \ud3c9\uac00\ud558\uc2ed\uc2dc\uc624. \ubc30\ud130\ub9ac\uc5d0 \ub300\ud574\uc11c\ub294 \uc608\uc0c1\ub418\ub294 \uace0\uc7a5\uc804\ub958\uc640 \uc800\uc7a5 \uc5d0\ub108\uc9c0 \uc815\ubcf4\ub97c \ud655\ubcf4\ud558\uc2ed\uc2dc\uc624. \uc815\ub958\uae30\ub85c \uad6c\ub3d9\ub418\ub294 \ud68c\ub85c\uc758 \uacbd\uc6b0, \uc804\uc6d0 \uc784\ud53c\ub358\uc2a4\uc640 \uc804\uc6d0 \uc2dc\uc815\uc218\uac00 \ucc28\ub2e8 \uc6a9\ub7c9\uc5d0 \uc601\ud5a5\uc744 \ubbf8\uce60 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc774\ub4e4 \uac12\uc740 \uc0c1\ud638 \uad50\ud658 \uac00\ub2a5\ud55c \uac00\uc815\uc774 \uc544\ub2d9\ub2c8\ub2e4.<\/p>\n<p>\uc811\uc9c0\ub97c \uae30\ub85d\ud558\uace0, \uc804\ub958 \ubc29\ud5a5\uc774 \uc5ed\uc804\ub420 \uc218 \uc788\ub294\uc9c0 \uc5ec\ubd80\ub97c \ud655\uc778\ud558\uc2ed\uc2dc\uc624. \uadf9\uc131\uc5d0 \ubbfc\uac10\ud55c \uc7a5\uce58\ub294 \uc2b9\uc778\ub41c \ud68c\ub85c\ub3c4\ub97c \ubc18\ub4dc\uc2dc \ub530\ub77c\uc57c \ud569\ub2c8\ub2e4. \uc2ec\uc9c0\uc5b4 \uadf9\uc131\uc774 \ubb34\uad00\ud558\ub2e4\uace0 \uba85\uc2dc\ub418\uc5b4 \uc788\ub354\ub77c\ub3c4 \uc784\uc758\ub85c \uadf9\uc744 \uc5f0\uacb0\ud558\uac70\ub098 \ubaa8\ub4e0 \uc885\ub958\uc758 \uc804\uc6d0 \uacf5\uae09 \uc7a5\uce58\ub97c \uc0ac\uc6a9\ud558\ub294 \uac83\uc740 \ud5c8\uc6a9\ub418\uc9c0 \uc54a\uc2b5\ub2c8\ub2e4.<\/p>\n<p>The <a href=\"https:\/\/w9-group.com\/ko\/blog\/%ed%83%9c%ec%96%91%ea%b4%91-%eb%b0%b0%ec%a0%84%ec%84%a0%ec%97%90-%ec%9e%88%eb%8a%94-mccb%ec%9d%98-%ec%97%ad%ed%95%a0-%ec%9d%b4%ed%95%b4\/\">\uad11\uc804\uc9c0 \ubc30\uc804 \uac00\uc774\ub4dc<\/a> PV \uc2a4\ud2b8\ub9c1 \uac00\uc815\uc744 \ubc30\ud130\ub9ac \uace0\uc7a5 \uc804\ub958 \uc6a9\ub7c9\uacfc \uad6c\ubd84\ud55c\ub2e4.<\/p>\n<figure class=\"wp-block-image\"><img decoding=\"async\" alt=\"Solar-storage engineer checking a DC feeder and molded-case circuit breaker in Phoenix\" src=\"https:\/\/w9-group.com\/wp-content\/uploads\/2026\/07\/wlm7dc-400a-2300-2p-3p-wlm7dc-series-photovoltaic-solar-type-molded-case-gallery-01-3.webp\" style=\"display:block;width:50%;max-width:50%;height:auto;margin:0 auto\"\/><\/figure>\n<h2>\ub4f1\uae09\uc744 \uc2b9\uc778\ub41c \uc804\uc8fc \ubc30\uce58\uc640 \uc77c\uce58\uc2dc\ucf1c \uc8fc\uc2ed\uc2dc\uc624.<\/h2>\n<p>\uc815\ud655\ud55c \ubaa8\ub378 \ubc0f \ud5c8\uc6a9 \ubc94\uc704\uc5d0 \ud574\ub2f9\ud558\ub294 \uc804\uc555\ubcc4 \uace0\uc7a5 \ub370\uc774\ud130\ub97c \uc77d\uc73c\uc2ed\uc2dc\uc624. <strong>\uadf9 \uc5f0\uacb0<\/strong>. \uc5ec\ub7ec \uadf9\uc774 \uc9c0\uc815\ub41c \uc9c1\ub82c \uc5f0\uacb0 \uc21c\uc11c\ub97c \uac00\uc9c8 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc774\ub294 \ud604\uc7a5 \uc124\uacc4\uc758 \uac04\ud3b8\ud55c \ucc98\ub9ac \ubc29\uc2dd\uc774 \uc544\ub2c8\ub77c \uc81c\uc870\uc5c5\uccb4\uc758 \uc9c0\uce68\uc785\ub2c8\ub2e4. \ubcf4\ud638\ub3c4\uccb4\ub294 \uc2a4\uc704\uce6d\ub418\ub294 \ud65c\uc120 \uacbd\ub85c\uac00 \uc544\ub2d9\ub2c8\ub2e4.<\/p>\n<table>\n<thead>\n<tr>\n<th>\uc785\ub825<\/th>\n<th>\uc65c \uc911\uc694\ud55c\uac00<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\ucd5c\ub300 \uc804\uc555<\/td>\n<td>\uc808\uc5f0 \ubc0f \ucc28\ub2e8 \uc6a9\ub7c9<\/td>\n<\/tr>\n<tr>\n<td>\uace0\uc7a5 \uc804\ub958<\/td>\n<td>\ud544\uc694\ud55c \ucc28\ub2e8 \uc6a9\ub7c9<\/td>\n<\/tr>\n<tr>\n<td>\uc18c\uc2a4 \ud589\ub3d9<\/td>\n<td>\ud604\uc7ac \uc0c1\uc2b9 \ubc0f \uac00\uc6a9 \uc5d0\ub108\uc9c0<\/td>\n<\/tr>\n<tr>\n<td>\uadf9\uc131\uacfc \uc811\uc9c0<\/td>\n<td>\ud5c8\uc6a9\ub41c \uc5f0\uacb0 \ubc0f \uc911\ub2e8 \uacbd\ub85c<\/td>\n<\/tr>\n<tr>\n<td>\ub3d9\uc791 \uc804\ub958<\/td>\n<td>\uc804\ub3c4 \ubc0f \uc5f4 \ubcf4\ud638<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<figure class=\"wp-block-image\"><img decoding=\"async\" alt=\"Diagram of DC arc path, series poles and polarity markings in an MCCB\" src=\"https:\/\/w9-group.com\/wp-content\/uploads\/2026\/07\/wlm7dc-400a-2300-2p-3p-wlm7dc-series-photovoltaic-solar-type-molded-case-detail-01-1.webp\" style=\"display:block;width:50%;max-width:50%;height:auto;margin:0 auto\"\/><\/figure>\n<h2>\ubcf4\ud638 \ubc0f \uaca9\ub9ac \uc870\uc815<\/h2>\n<p>MCCB\uc758 \uacfc\uc804\ub958 \ud2b8\ub9bd \uc7a5\uce58\ub294 \ub3c4\uccb4\ub97c \ubcf4\ud638\ud558\uace0 \ub2e4\ub978 \uc124\ube44\uc640 \uc0c1\ud638 \uc870\uc815\ub418\uc5b4\uc57c \ud569\ub2c8\ub2e4. \ud0dc\uc591\uad11 \uc5b4\ub808\uc774, \ubc30\ud130\ub9ac \uacf5\uae09\uc120 \ubc0f \uc778\ubc84\ud130 \uc785\ub825\ubd80\uc5d0\ub294 \uac01\uac01 \uc11c\ub85c \ub2e4\ub978 \uc815\uaca9 \ubc0f \uc7a5\ube44\uac00 \ud544\uc694\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc720\uc9c0\ubcf4\uc218 \uc2dc \ubaa8\ub4e0 \uc804\uc6d0\uc744 \uc548\uc804\ud558\uac8c \ubd84\ub9ac\ud558\uae30 \uc704\ud55c \uba85\uc2dc\ub41c \uc808\uc5f0 \uae30\ub2a5\uacfc \uc2e4\uc81c \uc218\ub2e8\uc744 \ud655\uc778\ud558\uc2ed\uc2dc\uc624.<\/p>\n<table>\n<thead>\n<tr>\n<th>\uc751\uc6a9<\/th>\n<th>\ud2b9\uc815 \ub9ac\ubdf0<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>PV \uacb0\ud569\uae30<\/td>\n<td>\ubcd1\ub82c \uae30\uc5ec\ub3c4 \ubc0f \ucd5c\ub300 \uc5b4\ub808\uc774 \uc804\uc555<\/td>\n<\/tr>\n<tr>\n<td>\ubc30\ud130\ub9ac \uacf5\uae09\uae30<\/td>\n<td>\uace0\uc7a5 \uc5d0\ub108\uc9c0 \ubc0f \uc804\ub958 \ubc29\ud5a5<\/td>\n<\/tr>\n<tr>\n<td>DC \uc0b0\uc5c5 \ubd80\ud558<\/td>\n<td>\uc2dc\ub3d9 \ub610\ub294 \uc7ac\uc0dd \uc791\ub3d9<\/td>\n<\/tr>\n<tr>\n<td>\ubcc0\ud658\uae30 \ud68c\ub85c<\/td>\n<td>\uc81c\uc870\uc5c5\uccb4 \ubcf4\ud638 \ubc0f \uaca9\ub9ac \uc9c0\uce68<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<figure class=\"wp-block-image\"><img decoding=\"async\" alt=\"DC MCCB installed in a photovoltaic distribution enclosure\" src=\"https:\/\/w9-group.com\/wp-content\/uploads\/2026\/07\/wlm7dc-400a-2300-2p-3p-wlm7dc-series-photovoltaic-solar-type-molded-case-gallery-02-3-scaled.webp\" style=\"display:block;width:50%;max-width:50%;height:auto;margin:0 auto\"\/><\/figure>\n<h2>\uc870\ub2ec \ubc0f \uc218\ub839<\/h2>\n<p>\uc804\uccb4 \uc8fc\ubb38 \ucf54\ub4dc, DC \uc815\uaca9 \ud45c, \ud5c8\uc6a9\ub41c \ubc30\uc120, \ud2b8\ub9bd \uace1\uc120, \ub2e8\uc790 \ubc0f \uc124\uce58 \ud55c\uacc4\ub97c \uc694\uccad\ud558\uc2ed\uc2dc\uc624. IEC 60947-2 \ucee8\ud14d\uc2a4\ud2b8\ub294 \uc2e0\uace0\ub41c \uc6a9\ub3c4 \uc678\uc758 \uc7a5\uce58\ub97c \uc2b9\uc778\ud558\uc9c0 \uc54a\uc2b5\ub2c8\ub2e4. \uc0ac\uc9c4\uc774\ub098 \uc77c\ubc18\uc801\uc778 \ud0dc\uc591\uad11 \uc124\uba85\ub9cc\uc73c\ub85c\ub294 \ucda9\ubd84\ud55c \uc99d\uac70\uac00 \ub418\uc9c0 \uc54a\uc2b5\ub2c8\ub2e4.<\/p>\n<p>W9 \uc120\ud0dd \uc2dc, \uc18c\uc2a4 \ub370\uc774\ud130\uc640 \ub2e8\uc120\ub3c4\ub97c \uc81c\uacf5\ud558\uace0 \uc815\ud655\ud788 \uc9c0\uc6d0\ub418\ub294 \uad6c\uc131 \uc0ac\uc591\uc744 \ubb38\uc758\ud558\uc2ed\uc2dc\uc624. \uc2b9\uc778\ub41c \ub3c4\uba74\uc744 \uc8fc\ubb38\uacfc \ud568\uaed8 \ubcf4\uad00\ud558\uace0, \uc124\uce58 \uc804\uc5d0 \ub0a9\ud488\ub41c \ud45c\uc2dc\uc0ac\ud56d\uc744 \ud655\uc778\ud558\uc2ed\uc2dc\uc624.<\/p>\n<section id=\"faq\">\n<h2>\uc790\uc8fc \ubb3b\ub294 \uc9c8\ubb38<\/h2>\n<h3>DC MCCB\uc758 \uc120\ud0dd \uae30\uc900\uc740 AC\uc640 \uc65c \ub2e4\ub978\uac00\uc694?<\/h3>\n<p>\uc9c1\ub958(DC)\ub294 \uc8fc\uae30\uc801\uc778 \uc804\ub958 \uc601\uc810\uc774 \uc5c6\uc73c\ubbc0\ub85c, \uc804\uc6d0 \ubc0f \uc811\uc18d\ubd80\uc5d0 \ub300\ud55c \uba85\uc2dc\uc801\uc778 \ucc28\ub2e8 \uc131\ub2a5 \uc99d\uba85\uc774 \ud544\uc694\ud569\ub2c8\ub2e4. \uad50\ub958(AC) \ub4f1\uae09\ub9cc\uc73c\ub85c\ub294 \uc9c1\ub958 \uc6a9\ub7c9\uc744 \uc785\uc99d\ud560 \uc218 \uc5c6\uc2b5\ub2c8\ub2e4.<\/p>\n<h3>\ud544\uc218\uc801\uc778 DC \ub4f1\uae09\uc740 \ubb34\uc5c7\uc785\ub2c8\uae4c?<\/h3>\n<p>Confirm maximum voltage, operating current, fault capacity, polarity, permitted pole arrangement and relevant source conditions for the exact model.<\/p>\n<h3>Can a PV MCCB be used on a battery?<\/h3>\n<p>Only with explicit evidence for the actual battery fault duty and connection. A PV application label alone is insufficient.<\/p>\n<h3>Can I series-connect poles to raise voltage capacity?<\/h3>\n<p>Only as the exact manufacturer-approved diagram permits. Do not combine pole ratings arbitrarily.<\/p>\n<\/section>\n<h2>\ucc38\uace0\ubb38\ud5cc<\/h2>\n<ul>\n<li><a href=\"https:\/\/webstore.iec.ch\/en\/publication\/66277\" rel=\"nofollow noopener\" target=\"_blank\">IEC 60947-2:2024 \u2014 \ud68c\ub85c \ucc28\ub2e8\uae30 \uc81c\ud488 \ubc94\uc704<\/a>.<\/li>\n<li><a href=\"https:\/\/webstore.iec.ch\/en\/publication\/65748\" rel=\"nofollow noopener\" target=\"_blank\">IEC 60364-7-712:2025 \u2014 photovoltaic electrical installations<\/a>.<\/li>\n<li><a href=\"https:\/\/webstore.iec.ch\/en\/publication\/107159\" rel=\"nofollow noopener\" target=\"_blank\">IEC 60947-3 consolidated edition \u2014 switches, disconnectors and switch-disconnectors<\/a>.<\/li>\n<\/ul>\n<p>For a PV or DC selection, <a href=\"https:\/\/w9-group.com\/ko\/%eb%ac%b8%ec%9d%98%ed%95%98%ea%b8%b0\/\">W9 \uadf8\ub8f9\uc5d0 \ubb38\uc758\ud558\uae30<\/a> with maximum voltage, operating and <strong>\uacfc\ubd80\ud558 \uc804\ub958<\/strong>, earthing and the intended pole connection.<\/p>","protected":false},"excerpt":{"rendered":"<p>\ud0dc\uc591\uad11, \uc800\uc7a5 \ubc0f OEM \ud504\ub85c\uc81d\ud2b8\uc6a9 DC MCCB \uae30\ubcf8 \uac00\uc774\ub4dc: \uc544\ud06c \ucc28\ub2e8, \uadf9\uc131, \uc815\uaca9, IEC 60947-2, UL 489 \ubc0f \uc870\ub2ec \uac80\uc0ac.<\/p>","protected":false},"author":1,"featured_media":3762,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-3486","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"blocksy_meta":{"styles_descriptor":{"styles":{"desktop":"","tablet":"","mobile":""},"google_fonts":[],"version":8}},"acf":[],"_links":{"self":[{"href":"https:\/\/w9-group.com\/ko\/wp-json\/wp\/v2\/posts\/3486","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/w9-group.com\/ko\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/w9-group.com\/ko\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/w9-group.com\/ko\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/w9-group.com\/ko\/wp-json\/wp\/v2\/comments?post=3486"}],"version-history":[{"count":4,"href":"https:\/\/w9-group.com\/ko\/wp-json\/wp\/v2\/posts\/3486\/revisions"}],"predecessor-version":[{"id":4724,"href":"https:\/\/w9-group.com\/ko\/wp-json\/wp\/v2\/posts\/3486\/revisions\/4724"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/w9-group.com\/ko\/wp-json\/wp\/v2\/media\/3762"}],"wp:attachment":[{"href":"https:\/\/w9-group.com\/ko\/wp-json\/wp\/v2\/media?parent=3486"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/w9-group.com\/ko\/wp-json\/wp\/v2\/categories?post=3486"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/w9-group.com\/ko\/wp-json\/wp\/v2\/tags?post=3486"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}