{"id":3442,"date":"2026-05-05T09:00:00","date_gmt":"2026-05-05T01:00:00","guid":{"rendered":"https:\/\/eqsvq3fzct.wpdns.site\/blog\/thermal-magnetic-release-mccb-trends-2026\/"},"modified":"2026-10-20T10:45:02","modified_gmt":"2026-10-20T02:45:02","slug":"%ec%97%b4-%ec%9e%90%ec%84%b1-%eb%b0%a9%ec%a0%84-mccb-%eb%8f%99%ed%96%a5-2026","status":"publish","type":"post","link":"https:\/\/w9-group.com\/ko\/blog\/thermal-magnetic-release-mccb-trends-2026\/","title":{"rendered":"2026\ub144 \uc5f4\uc801 \uc790\uc131 \ubc29\ucd9c MCCB\uc758 \ud2b8\ub80c\ub4dc \uc774\ud574?"},"content":{"rendered":"<p>Illustrative scenario, not a documented customer case: When a procurement engineer compares breakers for a 690 V distribution board, the visible choice is often a catalogue line. The harder decision is whether the release type, current rating, fault duty, pole arrangement and installation conditions actually match the circuit. circuit duty comes before catalogue preference: a thermal magnetic <a href=\"https:\/\/w9-group.com\/ko\/%ec%82%b0%ec%97%85%ec%9a%a9-%ec%a0%9c%ed%92%88\/mccb\/\">MCCB<\/a> can be the right fit, but a mismatched setting or an unverified assembly can still create nuisance trips, overheating or costly rework. This is a buyer decision scenario, not a claim about a named customer.<\/p>\n<p>Summary: A thermal magnetic MCCB combines a time-delayed thermal response for sustained overloads with a fast magnetic response for high fault current. For 2026 projects, start with the circuit duty and coordination study, then verify the breaker and panel documentation against the applicable scope of IEC 60947-2 for circuit-breakers. The 2024 edition covers breakers connected to circuits up to 1,000 V AC or 1,500 V DC; it does not by itself certify a product or an installation. Specify the exact rating, poles, release range, breaking capacity and destination-market documents before requesting a quotation.<\/p>\n<p><img decoding=\"async\" alt=\"\uc5f4 \uc790\uc131 MCCB \uc801\uc6a9 \uc0ac\ub840 \ucc38\uc870 \uc774\ubbf8\uc9c0\" itemprop=\"image\" src=\"https:\/\/ecdn6.globalso.com\/public\/img\/2026-03-03\/5ab3b835169d2c57645c348bc5f3a5f5.jpeg\" style=\"display:block;width:50%;max-width:50%;height:auto;margin:0 auto\"\/><\/p>\n<h2>\uc5f4 \uc790\uc131 \ubc29\uc804 MCCB\uac00 \ud558\ub294 \uc77c<\/h2>\n<p>An MCCB is a molded-case circuit breaker used to interrupt current when a circuit exceeds its defined conditions. In a thermal magnetic release, a bimetal element responds to heating caused by an overload, while an electromagnetic element responds to a steep short-circuit current. The two responses have different time characteristics: overload protection allows for normal inrush and load variation, while <strong>\ub2e8\ub77d \ubcf4\ud638<\/strong> is intended to act quickly. Exact trip curves and tolerances must come from the selected manufacturer\u2019s data; a generic description is not a substitute for that curve.<\/p>\n<p>This distinction matters in procurement. A breaker that is suitable for a feeder\u2019s normal current may still be unsuitable for the prospective <strong>\ub2e8\ub77d \uc804\ub958<\/strong> at its installation point. Ambient temperature, enclosure conditions, conductor size, motor starting current and upstream\/downstream coordination can change the result. Ask for the complete technical data sheet rather than selecting by ampere value alone.<\/p>\n<p><img decoding=\"async\" alt=\"\uc800\uc804\uc555 \ubc30\uae09 \uc7a5\ube44\uc758 \ucc38\uc870 \uc774\ubbf8\uc9c0\" itemprop=\"image\" src=\"https:\/\/ecdn6.globalso.com\/public\/img\/2026-03-03\/d6e099bfc0ec61734b96a6451dd6bbb4.jpeg\" style=\"display:block;width:50%;max-width:50%;height:auto;margin:0 auto\"\/><img decoding=\"async\" alt=\"WLM6 \uc2dc\ub9ac\uc988 \uc5f4 \uc790\uc11d \ud0c0\uc785 MCCB 400V\/690V 160A 3\/4\uadf9\" itemprop=\"image\" src=\"https:\/\/ecdn6.globalso.com\/public\/img\/2026-03-03\/aeadc2fe14c5ea9742769b84ea3cdb58.jpg\" style=\"display:block;width:50%;max-width:50%;height:auto;margin:0 auto\"\/><\/p>\n<h2>2026 MCCB Procurement Trends<\/h2>\n<p>2026\ub144\uc758 \uc720\uc6a9\ud55c \ucd94\uc138\ub294 \ubaa8\ub4e0 MCCB\uac00 \u201c\uc2a4\ub9c8\ud2b8\u201d\ud574\uc9c0\uace0 \uc788\ub2e4\ub294 \uc804\uba74\uc801\uc778 \uc8fc\uc7a5\uc5d0 \uadf8\uce58\uc9c0 \uc54a\uace0, \ubcf4\ub2e4 \uc0c1\uc138\ud55c \ubb38\uc11c\ud654\uc640 \ub354 \uba85\ud655\ud55c \uacbd\uacc4\ub97c \uc9c0\ud5a5\ud558\ub294 \uac83\uc774\ub2e4. IEC 60947-2:2024\uc5d0\uc11c\ub294 \uc678\ubd80 \uc7a5\uce58\uc5d0 \uc758\ud55c \uc804\ub958 \uc124\uc815 \uc870\uc815, \ucd94\uac00 \uc811\uc9c0 \uacb0\ud568 \uacfc\uc804\ub958 \ud14c\uc2a4\ud2b8, \uc815\uc9c0 \uc0c1\ud0dc\uc5d0\uc11c\uc758 \uc720\uc804\uccb4 \ud14c\uc2a4\ud2b8 \ubc0f \uac1c\uc815\ub41c EMC \ud14c\uc2a4\ud2b8\ub97c \ud3ec\ud568\ud55c \ubcc0\uacbd \uc0ac\ud56d\ub4e4\uc744 \uae30\ub85d\ud558\uace0 \uc788\ub2e4. \uc774\ub7ec\ud55c \ubcc0\uacbd \uc0ac\ud56d\ub4e4\uc740 \uc120\uc5b8\uc11c, \uc2dc\ud5d8 \ubcf4\uace0\uc11c \ub610\ub294 \uc561\uc138\uc11c\ub9ac \ucd9c\uc2dc \uc2dc \uac80\ud1a0 \uc2dc \uc720\uc6a9\ud558\uc9c0\ub9cc, \ud45c\uc900\uc758 \ubc94\uc704\ub294 \uc815\ud655\ud55c \uc81c\ud488\uacfc \ube44\uad50\ud558\uc5ec \ud655\uc778\ud574\uc57c \ud55c\ub2e4.<\/p>\n<p>\ud504\ub85c\uc81d\ud2b8\uc5d0 \uce21\uc815, \ud1b5\uc2e0 \ub610\ub294 \uc720\uc9c0\ubcf4\uc218 \ub370\uc774\ud130\uac00 \ud544\uc694\ud558\ub2e4\ub294 \ubb38\uc11c\ud654\ub41c \ud544\uc694\uc131\uc774 \uc788\ub294 \uacbd\uc6b0 \ub514\uc9c0\ud138 \ubaa8\ub2c8\ud130\ub9c1\uc740 \uc720\uc6a9\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc774\ub294 \ub2e8\uc21c\ud788 \uc720\ud589\ud558\ub294 \uc774\uc720\ub9cc\uc73c\ub85c \uc5f4 \uc790\uc131 \uaddc\uaca9\uc5d0 \ucd94\uac00\ud574\uc11c\ub294 \uc548 \ub429\ub2c8\ub2e4. \uc6d0\uaca9 \ub370\uc774\ud130\uac00 \ud544\uc694\ud55c \uacbd\uc6b0, \ub354 \uac04\ub2e8\ud55c \uc5f4\uc801-\uc790\uae30 \ubc29\uc2dd\uc758 MCCB \ub610\ub294 \ubcc4\ub3c4\uc758 \ubaa8\ub2c8\ud130\ub9c1 \uc2dc\uc2a4\ud15c\uacfc \ube44\uad50\ud558\uc5ec \uc778\ud130\ud398\uc774\uc2a4, \ubcf4\uc870 \uc811\uc810, \uacf5\uae09 \uc694\uad6c \uc0ac\ud56d \ubc0f \uc18c\ud504\ud2b8\uc6e8\uc5b4\ub97c \uae30\ub85d\ud558\uc138\uc694. \ucc45\uc784.<\/p>\n<p>IEC 60364-4-43:2023\uc740 \uac74\ubb3c \uc124\ube44\uc758 \uacfc\uc804\ub958 \ubc29\uc9c0 \ubc0f \ubcf4\ud638 \uc870\uce58\uc758 \uc870\uc815\uc744 \uc911\uc2ec\uc73c\ub85c \ud569\ub2c8\ub2e4. \uc774\ub294 \uc124\uce58 \uc9c0\uce68\uc11c\uc774\uba70 \uc81c\ud488 \uc778\uc99d\uc11c\uac00 \uc544\ub2d9\ub2c8\ub2e4. \ub530\ub77c\uc11c 2026\ub144 \uad6c\ub9e4 \ubb38\uc81c\uc810\uc740 \ub2e4\uc74c\uacfc \uac19\uc2b5\ub2c8\ub2e4: \uc81c\uc548\ub41c \ucc28\ub2e8\uae30, \uc804\uc120 \ubc0f \ubcf4\ud638 \uc7a5\uce58 \uccb4\uacc4\ub294 \ud504\ub85c\uc81d\ud2b8 \uc124\uce58 \uaddc\uc815\uc5d0 \ub530\ub77c \uc870\uc815\ub420 \uc218 \uc788\uc2b5\ub2c8\uae4c?<\/p>\n<p><img decoding=\"async\" alt=\"W9 \ud68c\ub85c \ubcf4\ud638 \uc81c\ud488 \ucc38\uc870 \uc774\ubbf8\uc9c0\" src=\"https:\/\/ecdn6.globalso.com\/public\/img\/2025-12-28\/68e7ebd4d25fffed9e029b2f2194e1df.jpeg\" style=\"display:block;width:50%;max-width:50%;height:auto;margin:0 auto\"\/><\/p>\n<h2>\uc5f4 \uc790\uc131 MCCB\uc640 \ub2e4\ub978 \ucc28\ub2e8\uae30 \uc120\ud0dd<\/h2>\n<p>Selection should follow the circuit function. An MCB is commonly used for lower-current final circuits; an MCCB gives a broader industrial frame and accessory choice; an RCCB or RCBO addresses <strong>\uc794\ub958 \uc804\ub958 \ubcf4\ud638<\/strong> according to its own product scope; and an ACB is used for higher-current main or distribution duties. These categories are complementary, not interchangeable. W9\u2019s <a href=\"https:\/\/w9-group.com\/ko\/mccb\/\" target=\"_blank\">MCCB \uce74\ud14c\uace0\ub9ac<\/a> lists thermal, adjustable and electronic MCCB families, while its ACB category lists WEW1 products from 1,000 A to 6,300 A at 400\/690 V. Those are catalogue examples, not universal limits for every manufacturer.<\/p>\n<table>\n<thead>\n<tr>\n<th>\uacb0\uc815 \ucc28\uc6d0<\/th>\n<th>\uc5f4 \uc790\uc131 MCCB<\/th>\n<th>\uc804\uc790\uc2dd MCCB<\/th>\n<th>ACB<\/th>\n<th>RCCB\/RCBO<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\uc8fc\uc694 \ubcf4\ud638 \uae30\ub2a5<\/td>\n<td>\uacfc\ubd80\ud558 \ubc0f \ub2e8\ub77d \ubc29\ucd9c<\/td>\n<td>\uacfc\uc804\ub958 \uae30\ub2a5\uc740 \uc804\uc790 \uc124\uc815\uc73c\ub85c \uc791\ub3d9\ud558\uba70 \ubaa8\ub378\uc5d0 \ub530\ub77c \ub2e4\ub985\ub2c8\ub2e4.<\/td>\n<td>\uc8fc\uc694 \ub610\ub294 \uace0\uc804\ub958 \ubc30\uc804 \ubcf4\ud638<\/td>\n<td>\uc794\uc720 \uc804\ub958 \ubcf4\ud638; RCBO\uc5d0\ub294 \uacfc\uc804\ub958 \ubcf4\ud638 \uae30\ub2a5\ub3c4 \ud3ec\ud568\ub429\ub2c8\ub2e4.<\/td>\n<\/tr>\n<tr>\n<td>\uc124\uc815 \uc811\uadfc \ubc29\uc2dd<\/td>\n<td>\ubaa8\ub378\uc5d0 \uba85\uc2dc\ub41c \uc5f4\uc801 \ubc0f \uc790\uae30\uc801 \ud2b9\uc131<\/td>\n<td>\uc870\uc815 \uae30\ub2a5\uc740 \uc5ec\ud589 \ub2e8\uc704\uc5d0 \ub530\ub77c \ub2ec\ub77c\uc9d1\ub2c8\ub2e4.<\/td>\n<td>\ud2b8\ub9bd \uc720\ub2db \ubc0f \ud504\ub808\uc784 \ub370\uc774\ud130\ub294 \uc870\ud654\ub418\uc5b4\uc57c \ud569\ub2c8\ub2e4.<\/td>\n<td>\uc7a5\uce58\uc758 \uc9c0\uc815\ub41c \uc794\uc5ec \uc804\ub958 \ubc0f \uacfc\uc804\ub958 \ud30c\ub77c\ubbf8\ud130\ub97c \uc0ac\uc6a9\ud558\uc2ed\uc2dc\uc624.<\/td>\n<\/tr>\n<tr>\n<td>\ucd5c\uace0\uc758 \uc870\ub2ec \uc9c8\ubb38<\/td>\n<td>\uc774 \uc5ec\ud589 \uace1\uc120\uc740 \ubd80\ud558 \ubc0f \uacfc\ubd80\ud558 \uc791\uc5c5\uc5d0 \uc801\ud569\ud55c\uac00\uc694?<\/td>\n<td>\uc124\uc815, \ubcf4\uc870 \uc804\uc6d0 \ubc0f \ud1b5\uc2e0\uc774 \ubb38\uc11c\ud654\ub418\uc5b4 \uc788\ub098\uc694?<\/td>\n<td>\uc2a4\uc704\uce58\ubcf4\ub4dc \uad6c\uc131\uc774 \ud504\ub808\uc784\uacfc \uc124\uce58\ub97c \uc9c0\uc6d0\ud569\ub2c8\uae4c?<\/td>\n<td>\ud68c\ub85c \ubc0f \ud604\uc9c0 \uaddc\uc815\uc5d0 \uc794\ub958 \uc804\ub958 \ubcf4\ud638\uac00 \ud544\uc694\ud55c\uac00\uc694?<\/td>\n<\/tr>\n<tr>\n<td>\uc218\uba85 \uc8fc\uae30 \uace0\ub824 \uc0ac\ud56d<\/td>\n<td>\uac04\ub2e8\ud55c \uc0ac\uc591\uc73c\ub85c \ud1b5\ud569 \uc791\uc5c5\uc774 \uc904\uc5b4\ub4ed\ub2c8\ub2e4.<\/td>\n<td>\ub354 \ub9ce\uc740 \uae30\ub2a5\uc740 \uc2dc\uc6b4\uc804 \ubc0f \ubb38\uc11c\ud654 \uc791\uc5c5\uc744 \ucd94\uac00\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/td>\n<td>\uc2dc\uc2a4\ud15c \uc601\ud5a5 \uc99d\uac00; \uc870\ub9bd \ubc0f \uc720\uc9c0\ubcf4\uc218 \uc811\uadfc \uad8c\ud55c \ud655\uc778<\/td>\n<td>\ubd88\ud3b8\ud55c \uc5ec\ud589 \uc704\ud5d8 \ubc0f \ud14c\uc2a4\ud2b8 \uc694\uac74\uc758 \uc870\uc815<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><img decoding=\"async\" alt=\"W9 \uc800\uc804\uc555 \uc804\uae30 \uc81c\ud488 \ucc38\uc870 \uc774\ubbf8\uc9c0\" src=\"https:\/\/ecdn6.globalso.com\/public\/img\/2025-11-29\/f440609b2f10705e12f2c56c2ebea8d7.jpeg\" style=\"display:block;width:50%;max-width:50%;height:auto;margin:0 auto\"\/><img decoding=\"async\" alt=\"W9 \ucc28\ub2e8\uae30 \uc81c\ud488 \ucc38\uc870 \uc774\ubbf8\uc9c0\" src=\"https:\/\/ecdn6.globalso.com\/public\/img\/2025-05-26\/8105a9376d88726f0ba574c801f9b8df.png\" style=\"display:block;width:50%;max-width:50%;height:auto;margin:0 auto\"\/><\/p>\n<h2>MCCB Release and Installation Requirements<\/h2>\n<p>\uad6c\ub9e4 \uc8fc\ubb38 \uc804\uc5d0 \uc774 \uc9e7\uc740 \uac80\ud1a0 \ub2e8\uacc4\ub97c \uc0ac\uc6a9\ud558\uc138\uc694:<\/p>\n<ol>\n<li>\uc124\uce58 \uc9c0\uc810\uc5d0\uc11c \uc2dc\uc2a4\ud15c \uc804\uc555, \uc8fc\ud30c\uc218, \uc5f0\uc18d \ubd80\ud558, \ub3c4\uccb4 \ubc30\uc5f4 \ubc0f \uc7a0\uc7ac\uc801\uc778 \ub2e8\ub77d \uc804\ub958\ub97c \uae30\ub85d\ud558\uc2ed\uc2dc\uc624.<\/li>\n<li>\ud504\ub808\uc784\uacfc \ud3f4\uc744 \uc120\ud0dd\ud55c \ub2e4\uc74c, \uc815\uaca9 \uc804\ub958, \uc804\uc555, \ub2e8\ub77d \ubc29\uc9c0 \uc6a9\ub7c9, \ub2e8\uc790 \ubc30\uc5f4 \ubc0f \uc911\ub9bd \ud3f4\uc5d0 \ub300\ud55c \uc694\uad6c \uc0ac\ud56d\uc744 \ud655\uc778\ud569\ub2c8\ub2e4.<\/li>\n<li>Check overload, motor inrush, transformer energisation and downstream selectivity. trip settings must match the installation; copying a setting from another project is not a coordination study.<\/li>\n<li>\ud658\uacbd \uc628\ub3c4, \uc778\ud074\ub85c\uc800 \ud658\uae30, \uace0\ub3c4, \uc124\uce58 \ubc29\ud5a5 \ubc0f \ucf00\uc774\ube14 \ub2e8\uc790 \uc9c0\uce68\uc740 \uc81c\uc870\uc5c5\uccb4\uc758 \uc124\uba85\uc11c\uc5d0\uc11c \ud655\uc778\ud558\uc2ed\uc2dc\uc624.<\/li>\n<li>\uc801\uc6a9\ub418\ub294 \uc120\uc5b8\uc11c, \uc2dc\ud5d8 \uc99d\uac70, \uc0ac\uc6a9 \uc124\uba85\uc11c \ubc0f \ubd80\uc18d\ud488 \ubaa9\ub85d\uc744 \uc694\uccad\ud569\ub2c8\ub2e4. \ucd5c\uc885 \uc124\uc815 \ubc0f \uc2dc\uc6b4\uc804 \uc810\uac80\uc744 \ud504\ub85c\uc81d\ud2b8 \ud30c\uc77c\uc5d0 \uae30\ub85d\ud569\ub2c8\ub2e4.<\/li>\n<\/ol>\n<table>\n<thead>\n<tr>\n<th>\ud504\ub85c\uc81d\ud2b8 \uc870\uac74<\/th>\n<th>\uc694\uccad\ud560 \uc99d\uac70<\/th>\n<th>\uacb0\uc815\uc120<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\ubaa8\ud130 \ub610\ub294 \ubcc0\uc555\uae30 \uc778\ub7ed\uc5c5\uc774 \uc788\ub294 \ud53c\ub354<\/td>\n<td>\ud2b8\ub9bd \ucee4\ube0c, \uc778\ub7ec\uc2dc \ub370\uc774\ud130 \ubc0f \uc870\ud654 \uc5f0\uad6c<\/td>\n<td>\uc815\uc804 \uc0c1\ud0dc \uc804\ub958\ub9cc\uc73c\ub85c \uc120\ud0dd\ud558\uc9c0 \ub9c8\uc138\uc694.<\/td>\n<\/tr>\n<tr>\n<td>\ud328\ub110 \ub610\ub294 \uc2a4\uc704\uce58\ubcf4\ub4dc \ud1b5\ud569<\/td>\n<td>\uc870\ub9bd \ud655\uc778 \uc815\ubcf4 \ubc0f \ub2e8\ub9d0\/\ucc98\ub9ac \ub370\uc774\ud130<\/td>\n<td>IEC 61439-1\uc740 \uc800\uc804\uc555 \uc5b4\uc148\ube14\ub9ac \uaddc\uc815\uc744 \ub2e4\ub8f9\ub2c8\ub2e4; \ucc28\ub2e8\uae30 \ud45c\uc900\uc740 \uc5b4\uc148\ube14\ub9ac \uac80\uc99d\uc744 \ub300\uccb4\ud558\uc9c0 \uc54a\uc2b5\ub2c8\ub2e4.<\/td>\n<\/tr>\n<tr>\n<td>\uc218\ucd9c \ud504\ub85c\uc81d\ud2b8<\/td>\n<td>\ub300\uc0c1 \uc2dc\uc7a5 \ud45c\uc900, \uc2e0\uace0\uc11c \ubc0f \uc81c\ud488\ubcc4 \ubcf4\uace0\uc11c<\/td>\n<td>IEC, UL \ubc0f \ud604\uc9c0 \uaddc\uc815\uc740 \ubc94\uc704\uac00 \ub2e4\ub985\ub2c8\ub2e4. \uc5b4\ub290 \uaddc\uc815\uc774 \uc801\uc6a9\ub418\ub294\uc9c0 \ud655\uc778\ud558\uc138\uc694.<\/td>\n<\/tr>\n<tr>\n<td>\uc720\uc9c0\ubcf4\uc218 \ub610\ub294 \uc6d0\uaca9 \ubaa8\ub2c8\ud130\ub9c1 \uc694\uad6c \uc0ac\ud56d<\/td>\n<td>\uae30\uae30 \ud638\ud658\uc131, \ubcf4\uc870 \uc804\uc6d0 \uacf5\uae09 \ubc0f \ud14c\uc2a4\ud2b8 \uc808\ucc28<\/td>\n<td>\uc5f4\uc801\u00b7\uc790\uae30\uc801 \ubc29\ucd9c\uc774 \ud1b5\uc2e0\uc744 \uc81c\uacf5\ud55c\ub2e4\ub294 \uac83\uc744 \uac00\uc815\ud558\uc9c0 \ub9c8\uc2ed\uc2dc\uc624.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><img decoding=\"async\" alt=\"W9 \uc804\uae30 \ubcf4\ud638 \uc81c\ud488 \ucc38\uc870 \uc774\ubbf8\uc9c0\" src=\"https:\/\/ecdn6.globalso.com\/public\/img\/2025-07-22\/e720faa72252b7b75c7d09f61b93f31b.png\" style=\"display:block;width:50%;max-width:50%;height:auto;margin:0 auto\"\/><img decoding=\"async\" alt=\"W9 \uc0b0\uc5c5\uc6a9 \uc804\uae30 \uc81c\ud488 \ucc38\uc870 \uc774\ubbf8\uc9c0\" src=\"https:\/\/ecdn6.globalso.com\/public\/img\/2025-09-30\/a2e145f5a12dd0a54bf223b7bfcf7794.png\" style=\"display:block;width:50%;max-width:50%;height:auto;margin:0 auto\"\/><\/p>\n<h2>Scope of Applicable Standards<\/h2>\n<p><a href=\"https:\/\/webstore.iec.ch\/en\/publication\/66277\" rel=\"noopener nofollow\" target=\"_blank\">IEC 60947-2:2024<\/a> \uc774\ub294 \ud574\ub2f9 \uc804\uc555 \ubc94\uc704 \ub0b4\uc758 \uc800\uc804\uc555 \ud68c\ub85c \ucc28\ub2e8\uae30\uc758 \ud45c\uc900 \uc81c\ud488\uc785\ub2c8\ub2e4. <a href=\"https:\/\/webstore.iec.ch\/en\/publication\/32338\" rel=\"noopener nofollow\" target=\"_blank\">IEC 61439-1:2020<\/a> \uc800\uc804\uc555 \ucc28\ub2e8\uae30 \uc870\ub9bd\uccb4\uc758 \uc77c\ubc18 \uaddc\uc815, \uc11c\ube44\uc2a4 \uc870\uac74, \uac74\uc124 \uc694\uad6c \uc0ac\ud56d \ubc0f \uac80\uc99d \uc694\uac74\uc744 \uc815\ud569\ub2c8\ub2e4. <a href=\"https:\/\/webstore.iec.ch\/en\/publication\/28432\" rel=\"noopener nofollow\" target=\"_blank\">IEC 60364-4-43:2023<\/a> \uc804\uae30\uc124\ube44\uc758 \uacfc\uc804\ub958 \ubcf4\ud638\uc5d0 \uad00\ud55c \uaddc\uc815\uc744 \ub2e4\ub8f9\ub2c8\ub2e4. \uc774\ub7ec\ud55c \ud45c\uc900 \uc911 \uc5b4\ub290 \ud558\ub098\uc5d0 \ub300\ud55c \uc5b8\uae09\uc740 \ubc94\uc6a9\uc131 \uc9c0\uce68\uc73c\ub85c \ud574\uc11d\ub418\uc5b4\uc57c \ud569\ub2c8\ub2e4. \uc774\ub294 \uac1c\ubcc4 \ubaa8\ub378, \ud328\ub110 \ub610\ub294 \uc124\uce58\uac00 \uc778\uc99d\uc744 \ubc1b\uc558\ub2e4\ub294 \uac83\uc744 \uc785\uc99d\ud558\ub294 \uac83\uc774 \uc544\ub2d9\ub2c8\ub2e4.<\/p>\n<p>For higher-voltage or higher-current architectures, do not stretch the MCCB label beyond the documented design. ABB\u2019s public SACE Emax 2\/E page, for example, describes an ACB range above 690 V AC, up to 6,300 A and up to 85 kA at 1,200 V for that specific family. The example shows why frame type, voltage and <strong>\ud30c\uad34 \ub2a5\ub825<\/strong> must be reviewed together; it is not a performance claim about W9 products.<\/p>\n<p><img decoding=\"async\" alt=\"W9 \ud68c\ub85c \ubcf4\ud638 \uc7a5\uce58 \ucc38\uc870 \uc774\ubbf8\uc9c0\" src=\"https:\/\/ecdn6.globalso.com\/public\/img\/2025-10-05\/a41a9364d7d79e6528f88278f48a4ca5.png\" style=\"display:block;width:50%;max-width:50%;height:auto;margin:0 auto\"\/><\/p>\n<h2>W9 \uc81c\ud488 \uc815\ubcf4 \ubc0f \uacac\uc801 \uc694\uccad<\/h2>\n<p>W9 Group\uc758 \uacf5\uac1c MCCB \uce74\ud0c8\ub85c\uadf8\uc5d0\ub294 WLM6 \uc5f4\uc804\uc790\uae30 \ubaa8\ub378\uc774 400\/690 V\uc5d0\uc11c \uc5ec\ub7ec \uc804\ub958 \uc635\uc158\uc73c\ub85c \uc81c\uacf5\ub418\uba70, 125 A, 160 A, 250 A, 400 A, 630 A, 800 A, 1,250 A, 1,600 A \ubc0f 2,000 A \ub4f1 \ub2e4\uc591\ud55c \uc804\ub958 \uc635\uc158\uc774 \ud3ec\ud568\ub418\uc5b4 \uc788\uc2b5\ub2c8\ub2e4. \ud574\ub2f9 \uce74\ud14c\uace0\ub9ac \ud398\uc774\uc9c0\uc5d0\ub294 3\uadf9 \ubc0f 4\uadf9 \ubaa9\ub85d\uc774 \ud45c\uc2dc\ub429\ub2c8\ub2e4. \uc774\ub7ec\ud55c \ud56d\ubaa9\uc744 \uc2dc\uc791\uc810\uc73c\ub85c \uc0bc\uc544 \ud604\uc7ac \ub370\uc774\ud130\uc2dc\ud2b8\uc5d0 \uc788\ub294 \uc815\ud655\ud55c \ubaa8\ub378, \uc815\uaca9 \uc804\ub958, \ud2b8\ub9ac\ud2b8 \ud2b9\uc131 \ubc0f \uc561\uc138\uc11c\ub9ac\ub97c \ud655\uc778\ud558\uc2ed\uc2dc\uc624.<\/p>\n<p>W9 states that Zhejiang W9 Group Technology Co., Ltd. was established in 2020 and supports low-voltage protection products, testing, quality control and OEM\/ODM communication. These are company statements; buyers should still request product-specific documents and destination-market evidence. document the selected rating and test evidence before release to production.<\/p>\n<h2>\uc790\uc8fc \ubb3b\ub294 \uc9c8\ubb38<\/h2>\n<h3>\uc5f4 \uc790\uc131 \ubc29\uc804 MCCB\ub780 \ubb34\uc5c7\uc778\uac00?<\/h3>\n<p>\uc774\ub294 \uc9c0\uc18d\uc801\uc778 \uacfc\ubd80\ud558\ub97c \uc704\ud55c \uc5f4\uc801 \uba54\ucee4\ub2c8\uc998\uacfc \uace0\uc804\ub958\uc758 \uacbd\uc6b0 \uc790\uc131\uc801 \uba54\ucee4\ub2c8\uc998\uc744 \uc0ac\uc6a9\ud558\ub294 MCCB\uc785\ub2c8\ub2e4. \uc815\ud655\ud55c \ud2b8\ub9ac\ud504 \ucee4\ube0c, \ud5c8\uc6a9 \uc624\ucc28 \ubc0f \uc124\uc815\uc740 \ubaa8\ub378 \uc124\uba85\uc11c\uc5d0 \ub530\ub77c \ub2ec\ub77c\uc9d1\ub2c8\ub2e4.<\/p>\n<h3>\uc5f4\uc804\uc790\uae30\ub2a5\uc774 \uc788\ub294 MCCB\ub294 \ud56d\uc0c1 \uc804\uc790\uc2dd MCCB\ubcf4\ub2e4 \ub354 \ub098\uc740 \uac83\uc778\uac00?<\/h3>\n<p>\uc544\ub2d9\ub2c8\ub2e4. \uc5f4 \uc790\uadf9 \ubc29\uc804 \uc7a5\uce58\ub294 \uc9c1\uad00\uc801\uc774\uace0 \ubb38\uc11c\ud654\ub41c \ubcf4\ud638 \uccb4\uacc4\uac00 \ud544\uc694\ud55c \uc560\ud50c\ub9ac\ucf00\uc774\uc158\uc5d0 \uc801\ud569\ud569\ub2c8\ub2e4. \uc804\uc790 \uc790\uadf9 \ubc29\uc804 \uc7a5\uce58\ub294 \ub354 \ub2e4\uc591\ud55c \uae30\ub2a5\uc774\ub098 \ubaa8\ub2c8\ud130\ub9c1 \uae30\ub2a5\uc744 \uc81c\uacf5\ud560 \uc218 \uc788\uc9c0\ub9cc, \uc124\uc815, \uc804\uc6d0 \uacf5\uae09, \uc2dc\uc6b4\uc804 \ub4f1\uc758 \uc694\uac74\uc744 \ucd94\uac00\ud569\ub2c8\ub2e4.<\/p>\n<h3>IEC 60947-2\ub294 \ub0b4 MCCB \uc124\uce58\uac00 \uc900\uc218\ub41c\ub2e4\ub294 \uac83\uc744 \uc785\uc99d\ud569\ub2c8\uae4c?<\/h3>\n<p>\uc544\ub2d9\ub2c8\ub2e4. IEC 60947-2\ub294 \ud574\ub2f9 \ubc94\uc704 \ub0b4\uc5d0\uc11c \ucc28\ub2e8\uae30 \uc694\uad6c \uc0ac\ud56d\uc744 \uc815\uc758\ud569\ub2c8\ub2e4. \uc81c\ud488 \ubaa8\ub378, \uc870\ub9bd \ubc29\ubc95, \uc124\uce58 \ubc29\uc2dd, \ub300\uc0c1 \uc2dc\uc7a5 \ubc0f \uc9c0\uc6d0 \uc11c\ub958\ub294 \uc5ec\uc804\ud788 \ubcc4\ub3c4\uc758 \uac80\uc99d\uc774 \ud544\uc694\ud569\ub2c8\ub2e4.<\/p>\n<h3>\uc62c\ubc14\ub978 MCCB \uc804\ub958 \ub4f1\uae09\uc744 \uc5b4\ub5bb\uac8c \uc120\ud0dd\ud558\ub098\uc694?<\/h3>\n<p>\uba3c\uc800 \uc124\uacc4 \uc804\ub958, \ub3c4\uccb4 \uc6a9\ub7c9, \uc8fc\ubcc0 \uc870\uac74, \uacb0\ud568 \uc218\uc900 \ubc0f \ud611\ub825 \uc694\uad6c \uc0ac\ud56d\uc744 \ud655\uc778\ud569\ub2c8\ub2e4. \uadf8\ub7f0 \ub2e4\uc74c \uc120\ud0dd\ud55c \ud3f4, \uc804\uc555 \ubc0f \uc124\uce58 \ubc29\uc2dd\uc5d0 \ub300\ud55c \uc81c\uc870\uc5c5\uccb4\uc758 \ub4f1\uae09 \ubc0f \ud2b8\ub9bd \ucee4\ube0c\ub97c \ud655\uc778\ud569\ub2c8\ub2e4.<\/p>\n<h3>W9 \ubaa8\ub378 \ubc0f \uc900\uc218 \uc11c\ub958\ub97c \uc5b4\ub514\uc5d0\uc11c \uc2e0\uccad\ud560 \uc218 \uc788\ub098\uc694?<\/h3>\n<p>Send the complete duty and documentation request through W9 Group contact . Include voltage, current, poles, fault duty, enclosure, destination market and required accessories so the quotation can be checked against the actual application.<\/p>\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\/32338\" rel=\"nofollow noopener\" target=\"_blank\">IEC 61439-1:2020 \u2014 \uc800\uc804\uc555 \uc5b4\uc148\ube14\ub9ac \uc77c\ubc18 \uaddc\uc815<\/a>.<\/li>\n<li><a href=\"https:\/\/www.nfpa.org\/codes-and-standards\/nfpa-70-standard-development\/70\" rel=\"nofollow noopener\" target=\"_blank\">NFPA 70 \u2014 \ubbf8\uad6d \uc124\uce58 \uaddc\uaca9 \uac1c\ubc1c \ubc0f \ubc94\uc704<\/a>.<\/li>\n<\/ul>\n<p>\uc2e0\ub8b0\ud560 \uc218 \uc788\ub294 \ucc28\ub2e8\uae30\ub294 \ud328\ub110\uc774 \uc81c\uc791 \ubc0f \uc2dc\uc6b4\uc804\ub420 \ub54c\uc5d0\ub3c4 \ucd9c\uc2dc \uc6a9\ub7c9, \uacb0\ud568 \uae30\ub2a5 \ubc0f \ubb38\uc11c\uac00 \uc5ec\uc804\ud788 \uc77c\uce58\ud558\ub294 \uc81c\ud488\uc785\ub2c8\ub2e4. W9 \uadf8\ub8f9\uc758 \uc870\ub2ec \uc2dc\uc5d0\ub294 \uc2b9\uc778 \uc804\uc5d0 \ud504\ub85c\uc81d\ud2b8 \ud300\uacfc \uc815\ud655\ud55c \ubaa8\ub378 \ubc0f \ubaa9\uc801\uc2dc\uc7a5 \uc99d\uac70\ub97c \ud655\uc778\ud558\uc2ed\uc2dc\uc624.<\/p>\n<p>\uc81c\uc548\ub41c \uad6c\uc131\uc744 \uac80\ud1a0\ud558\uae30 \uc704\ud574, <a href=\"https:\/\/w9-group.com\/ko\/contact-us\/\">W9 \uadf8\ub8f9\uc5d0 \ubb38\uc758\ud558\uae30<\/a> \ub85c\ub4dc \uc2a4\ucf00\uc904, \uc0ac\uc6a9 \uac00\ub2a5\ud55c \ubd88\ub7c9 \uc804\ub958 \ubc0f \ubaa9\uc801 \uc2dc\uc7a5 \uc694\uad6c \uc0ac\ud56d\uc744 \uace0\ub824\ud558\uc5ec.<\/p>","protected":false},"excerpt":{"rendered":"<p>\ucd5c\uadfc \uc5c5\uacc4\ub294 \ub354\uc6b1 \uc2a4\ub9c8\ud2b8\ud558\uace0 \ud6a8\uc728\uc801\uc778 \uc804\uae30 \uc194\ub8e8\uc158\uc73c\ub85c \ube60\ub974\uac8c \uc804\ud658\ud558\uace0 \uc788\uc2b5\ub2c8\ub2e4. \ud655\uc2e4\ud788 \ub354 \ub9ce\uc774 \uc9c4\uc804\ub41c \uc810\uc740 \ud558\ub098\uc785\ub2c8\ub2e4.<\/p>","protected":false},"author":1,"featured_media":3780,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-3442","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\/3442","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=3442"}],"version-history":[{"count":4,"href":"https:\/\/w9-group.com\/ko\/wp-json\/wp\/v2\/posts\/3442\/revisions"}],"predecessor-version":[{"id":4706,"href":"https:\/\/w9-group.com\/ko\/wp-json\/wp\/v2\/posts\/3442\/revisions\/4706"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/w9-group.com\/ko\/wp-json\/wp\/v2\/media\/3780"}],"wp:attachment":[{"href":"https:\/\/w9-group.com\/ko\/wp-json\/wp\/v2\/media?parent=3442"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/w9-group.com\/ko\/wp-json\/wp\/v2\/categories?post=3442"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/w9-group.com\/ko\/wp-json\/wp\/v2\/tags?post=3442"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}