{"id":21474,"date":"2026-01-28T18:23:42","date_gmt":"2026-01-28T10:23:42","guid":{"rendered":"https:\/\/viox.com\/?p=21474"},"modified":"2026-01-28T18:23:46","modified_gmt":"2026-01-28T10:23:46","slug":"mccb-short-time-delay-icw-rating-explained","status":"publish","type":"post","link":"https:\/\/test.viox.com\/ja\/mccb-short-time-delay-icw-rating-explained\/","title":{"rendered":"MCCB\u306f\u306a\u305c\u3001\u5b9a\u683c\u77ed\u6642\u9593\u8010\u96fb\u6d41\uff08Icw\uff09\u306a\u3057\u306b\u77ed\u6642\u9593\u9045\u5ef6\u4fdd\u8b77\u3092\u63d0\u4f9b\u3059\u308b\u306e\u3067\u3059\u304b\uff1f<sub>cw<\/sub>)"},"content":{"rendered":"<div class=\"product-intro\">\n<figure style=\"text-align: center; margin: 20px 0;\"><img decoding=\"async\" style=\"max-width: 100%; height: auto;\" src=\"https:\/\/img.viox.com\/MCCB-electronic-trip-unit-in-industrial-panel-showing-400A-rating-and-current-display.webp\" alt=\"MCCB electronic trip unit in industrial panel showing 400A rating and current display - VIOX Electric\" \/><figcaption style=\"font-style: italic; color: #555; margin-top: 8px;\">\u7523\u696d\u7528\u30d1\u30cd\u30eb\u5185\u306eMCCB\u96fb\u5b50\u5f0f\u30c8\u30ea\u30c3\u30d7\u30e6\u30cb\u30c3\u30c8\u3001400A\u306e\u5b9a\u683c\u3068\u96fb\u6d41\u8868\u793a \u2013 VIOX Electric<\/figcaption><\/figure>\n<h2>\u76f4\u63a5\u56de\u7b54<\/h2>\n<p><strong><a href=\"https:\/\/test.viox.com\/ja\/mccb\/\">\u30e2\u30fc\u30eb\u30c9\u30b1\u30fc\u30b9\u30fb\u30b5\u30fc\u30ad\u30c3\u30c8\u30fb\u30d6\u30ec\u30fc\u30ab\uff08MCCB\uff09<\/a> \u5b9a\u683c\u77ed\u6642\u9593\u8010\u96fb\u6d41\uff08I<sub>cw<\/sub>\uff09\u3092\u6301\u305f\u306a\u304f\u3066\u3082\u3001\u77ed\u6642\u9593\u9045\u5ef6\u4fdd\u8b77\u3092\u63d0\u4f9b\u3067\u304d\u307e\u3059\u3002\u3053\u308c\u306f\u3001IEC 60947-2\u306e\u30ab\u30c6\u30b4\u30eaA\u306b\u5c5e\u3057\u3001\u9078\u629e\u906e\u65ad\u306f\u610f\u56f3\u7684\u306a\u6642\u9593\u9045\u5ef6\u3067\u306f\u306a\u304f\u3001\u96fb\u6d41\u5236\u9650\u6280\u8853\u306b\u3088\u3063\u3066\u5b9f\u73fe\u3055\u308c\u308b\u305f\u3081\u3067\u3059\u3002.<\/strong> \u30ab\u30c6\u30b4\u30eaB\u306e\u30a8\u30a2\u30b5\u30fc\u30ad\u30c3\u30c8\u30d6\u30ec\u30fc\u30ab\uff08ACB\uff09\u304c\u3001\u9ad8\u3044I<sub>cw<\/sub> \u5b9a\u683c\u3092\u4f7f\u7528\u3057\u3066\u6545\u969c\u96fb\u6d41\u3092\u300c\u5f85\u6a5f\u300d\u3059\u308b\u306e\u3068\u306f\u7570\u306a\u308a\u3001MCCB\u306f\u96fb\u78c1\u63a5\u89e6\u53cd\u767a\u3068\u8d85\u9ad8\u901f\u30a2\u30fc\u30af\u906e\u65ad\u3092\u4f7f\u7528\u3057\u3066\u6545\u969c\u30a8\u30cd\u30eb\u30ae\u30fc\u3092\u5236\u9650\u3057\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u56fa\u6709\u306e\u77ed\u9045\u5ef6\u7279\u6027\uff08\u901a\u5e38\u306f10\u301c12\u00d7I<sub>n<\/sub>\uff09\u3092\u4ecb\u3057\u3066\u4e0b\u6d41\u30c7\u30d0\u30a4\u30b9\u3068\u9023\u643a\u3057\u306a\u304c\u3089\u3001\u81ea\u8eab\u3092\u4fdd\u8b77\u3057\u307e\u3059\u3002.<\/p>\n<hr \/>\n<h2>\u8981\u70b9<\/h2>\n<ul>\n<li>\u2705 <strong>\u30ab\u30c6\u30b4\u30eaA\u5bfeB<\/strong>\uff1aMCCB\uff08\u30ab\u30c6\u30b4\u30eaA\uff09\u306f\u3001\u5ba3\u8a00\u3055\u308c\u305fI<sub>cw<\/sub> \u5b9a\u683c\u306f\u3042\u308a\u307e\u305b\u3093\u304c\u3001\u63a5\u89e6\u53cd\u767a\u95be\u5024\u672a\u6e80\uff08\u901a\u5e38\u306f&gt; 12\u301c14\u00d7I<sub>n<\/sub>)<\/li>\n<li>\u2705 <strong>\uff09\u3067\u56fa\u6709\u306e\u77ed\u6642\u9593\u8010\u6027\u3092\u6301\u3063\u3066\u3044\u307e\u3059\u3002<\/strong>\u96fb\u6d41\u5236\u9650\u306e\u7269\u7406\u5b66<sub>n<\/sub>\uff1aMCCB\u306e\u63a5\u70b9\u3070\u306d\u5727\u529b\u306f\u3001\u9ad8\u3044\u6545\u969c\u96fb\u6d41\uff08&gt; 25\u00d7I<\/li>\n<li>\u2705 <strong>\uff09\u3067\u8fc5\u901f\u306a\u96fb\u78c1\u53cd\u767a\u3092\u53ef\u80fd\u306b\u3059\u308b\u305f\u3081\u306b\u610f\u56f3\u7684\u306b\u4f4e\u304f\u8a2d\u5b9a\u3055\u308c\u3066\u304a\u308a\u3001\u9577\u6642\u9593\u306e\u8010\u6027\u3067\u306f\u306a\u304f\u3001\u9ad8\u901f\u906e\u65ad\u306b\u3088\u3063\u3066\u640d\u50b7\u3092\u9632\u304e\u307e\u3059\u3002<\/strong>\u77ed\u9045\u5ef6\u306e\u73fe\u5b9f<sub>n<\/sub>, \uff1aMCCB\u306e\u77ed\u9045\u5ef6\u8a2d\u5b9a\uff08\u4f8b\uff1a10\u00d7I<\/li>\n<li>\u2705 <strong>\u30010.4\u79d2\uff09\u306f\u3001\u6545\u969c\u96fb\u6d41\u304c\u77ac\u6642\u30c8\u30ea\u30c3\u30d7\u95be\u5024\u3092\u4e0b\u56de\u3063\u3066\u3044\u308b\u5834\u5408\u306b\u306e\u307f\u6a5f\u80fd\u3057\u307e\u3059\u3002\u3053\u308c\u3092\u8d85\u3048\u308b\u3068\u3001\u78c1\u6c17\u30c8\u30ea\u30c3\u30d7\u307e\u305f\u306f\u30a8\u30cd\u30eb\u30ae\u30fc\u30d9\u30fc\u30b9\u306e\u30e1\u30ab\u30cb\u30ba\u30e0\u3092\u4ecb\u3057\u3066\u5373\u6642\u30a2\u30af\u30b7\u30e7\u30f3\u304c\u30c8\u30ea\u30ac\u30fc\u3055\u308c\u307e\u3059\u3002<\/strong>\u9078\u629e\u906e\u65ad\u306e\u5236\u9650<sub>cw<\/sub> = I<sub>Icu<\/sub> \uff1aMCCB\u9593\u306e\u5b8c\u5168\u306a\u9078\u629e\u906e\u65ad\u306b\u306f\u3001\u614e\u91cd\u306a\u9023\u643a\u8868\u304c\u5fc5\u8981\u3067\u3059\u3002ACB\u304b\u3089MCCB\u3078\u306e\u30ab\u30b9\u30b1\u30fc\u30c9\u63a5\u7d9a\u306f\u3001ACB\u304c\u771f\u306b\u9045\u5ef6\u3067\u304d\u308b\uff08I<\/li>\n<li>\u2705 <strong>\u6a5f\u80fd\uff09\u4e00\u65b9\u3001MCCB\u306f\u4e0b\u6d41\u306e\u6545\u969c\u3092\u51e6\u7406\u3059\u308b\u305f\u3081\u3001\u3088\u308a\u826f\u3044\u7d50\u679c\u304c\u5f97\u3089\u308c\u307e\u3059\u3002<\/strong>\u5b89\u5168\u30aa\u30fc\u30d0\u30fc\u30e9\u30a4\u30c9<sub>n<\/sub>, \uff1a\u7121\u52b9\u5316\u53ef\u80fd\u306a\u77ac\u6642\u30c8\u30ea\u30c3\u30d7\u3092\u5099\u3048\u305f\u9ad8\u5ea6\u306aMCCB\uff08\u4f8b\uff1aSchneider NSX\uff09\u306b\u306f\u3001\u300c\u30a8\u30cd\u30eb\u30ae\u30fc\u30c8\u30ea\u30c3\u30d7\u300d\u307e\u305f\u306f\u300c\u77ac\u6642\u30aa\u30fc\u30d0\u30fc\u30e9\u30a4\u30c9\u300d\u6a5f\u80fd\u304c\u7d44\u307f\u8fbc\u307e\u308c\u3066\u3044\u307e\u3059\u3002\u6545\u969c\u96fb\u6d41\u304c\u301c25\u00d7I<\/li>\n<\/ul>\n<hr \/>\n<h2>\u3092\u8d85\u3048\u308b\u3068\u3001\u30ac\u30b9\u4f5c\u52d5\u30e1\u30ab\u30cb\u30ba\u30e0\u306f\u8a2d\u5b9a\u306b\u95a2\u4fc2\u306a\u304f\u5373\u6642\u30c8\u30ea\u30c3\u30d7\u3092\u5f37\u5236\u3057\u307e\u3059\u3002<\/h2>\n<figure style=\"text-align: center; margin: 20px 0;\"><img decoding=\"async\" style=\"max-width: 100%; height: auto;\" src=\"https:\/\/img.viox.com\/Size-and-construction-comparison-between-ACB-with-Icw-rating-and-compact-MCCB-Category-A-breaker.webp\" alt=\"Size and construction comparison between ACB with Icw rating and compact MCCB Category A breaker - VIOX Electric\" \/><figcaption style=\"font-style: italic; color: #555; margin-top: 8px;\">IEC 60947-2\u9078\u629e\u906e\u65ad\u30ab\u30c6\u30b4\u30ea\u306e\u7406\u89e3<\/figcaption><\/figure>\n<h3>Icw\u5b9a\u683c\u306eACB\u3068\u30b3\u30f3\u30d1\u30af\u30c8\u306aMCCB\u30ab\u30c6\u30b4\u30eaA\u30d6\u30ec\u30fc\u30ab\u30fc\u306e\u30b5\u30a4\u30ba\u3068\u69cb\u9020\u306e\u6bd4\u8f03 \u2013 VIOX Electric<sub>cw<\/sub><\/h3>\n<p>\u30ab\u30c6\u30b4\u30eaB\uff1a\u5ba3\u8a00\u3055\u308c\u305fI <strong>\u30ab\u30c6\u30b4\u30ea\u30fcB<\/strong> \u3092\u6301\u3064ACB<sub>cw<\/sub>\u30a8\u30a2\u30b5\u30fc\u30ad\u30c3\u30c8\u30d6\u30ec\u30fc\u30ab\uff08ACB\uff09\u306f\u3001\u610f\u56f3\u7684\u306a\u77ed\u6642\u9593\u9045\u5ef6\u306b\u3088\u3063\u3066\u9078\u629e\u906e\u65ad\u304c\u5b9f\u73fe\u3055\u308c\u308b\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u5411\u3051\u306b\u8a2d\u8a08\u3055\u308c\u3066\u3044\u307e\u3059\u3002IEC 60947-2\u306b\u3088\u308b\u3068\u3001\u3053\u308c\u3089\u306e\u30c7\u30d0\u30a4\u30b9\u306f\u3001\u5b9a\u683c\u77ed\u6642\u9593\u8010\u96fb\u6d41\uff08I.<\/p>\n<p><strong>\uff09\u3092\u5ba3\u8a00\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u308c\u306f\u3001\u30d6\u30ec\u30fc\u30ab\u30fc\u304c\u640d\u50b7\u3059\u308b\u3053\u3068\u306a\u304f\u3001\u6307\u5b9a\u3055\u308c\u305f\u671f\u9593\uff080.05\u79d2\u30010.1\u79d2\u30010.25\u79d2\u30010.5\u79d2\u3001\u307e\u305f\u306f1.0\u79d2\uff09\u9589\u3058\u305f\u72b6\u614b\u3067\u904b\u3076\u3053\u3068\u304c\u3067\u304d\u308b\u6700\u5927\u6545\u969c\u96fb\u6d41\u3067\u3059\u3002<\/strong><\/p>\n<table style=\"border-collapse: collapse; width: 100%; margin: 20px 0;\" border=\"1\" cellpadding=\"10\">\n<thead>\n<tr style=\"background-color: #f2f2f2;\">\n<th>\u30d1\u30e9\u30e1\u30fc\u30bf<\/th>\n<th>\u4ed5\u69d8<\/th>\n<th>\u76ee\u7684<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>I<sub>cw<\/sub> \u8a55\u4fa1<\/strong><\/td>\n<td>\u30ab\u30c6\u30b4\u30eaB\u30d6\u30ec\u30fc\u30ab\u30fc\u306e\u4e3b\u306a\u7279\u6027\uff1a<sub>n<\/sub> \u6700\u5c0f12\u00d7I<br \/>\n\u307e\u305f\u306f5kA\uff08\u22642500A\u30d5\u30ec\u30fc\u30e0\uff09<\/td>\n<td>\u6700\u5c0f30kA\uff08&gt; 2500A\u30d5\u30ec\u30fc\u30e0\uff09<\/td>\n<\/tr>\n<tr>\n<td><strong>\u30b3\u30f3\u30bf\u30af\u30c8\u30fb\u30c7\u30b6\u30a4\u30f3<\/strong><\/td>\n<td>\u6545\u969c\u6642\u306e\u610f\u56f3\u7684\u306a\u9045\u5ef6\u3092\u53ef\u80fd\u306b\u3057\u307e\u3059<\/td>\n<td>\u9ad8\u3044\u3070\u306d\u5727\u529b<\/td>\n<\/tr>\n<tr>\n<td><strong>\u9045\u5ef6\u671f\u9593\u4e2d\u306e\u63a5\u70b9\u53cd\u767a\u3092\u9632\u304e\u307e\u3059<\/strong><\/td>\n<td>\u30c8\u30ea\u30c3\u30d7\u9045\u5ef6\u6027<\/td>\n<td>\u77ac\u6642\u30c8\u30ea\u30c3\u30d7\u3092\u7121\u52b9\u306b\u3067\u304d\u307e\u3059<\/td>\n<\/tr>\n<tr>\n<td><strong>\u5178\u578b\u7684\u306a\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3<\/strong><\/td>\n<td>\u7d14\u7c8b\u306a\u6642\u9593\u30d9\u30fc\u30b9\u306e\u9023\u643a\u3092\u53ef\u80fd\u306b\u3057\u307e\u3059<\/td>\n<td>\u30e1\u30a4\u30f3\u30a4\u30f3\u30ab\u30de\u30fc\u3001\u914d\u96fb\u30d5\u30a3\u30fc\u30c0\u30fc<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u4e0b\u6d41\u306eMCCB\u3068\u9023\u643a\u3057\u307e\u3059<sub>cw<\/sub> \u305f\u3068\u3048\u3070\u3001I<sup>2<\/sup>= 85kA \/ 1s\u306e800A ACB\u306f\u3001\u77ed\u6642\u9593\u9045\u5ef6\u30ea\u30ec\u30fc\u304c\u4e0b\u6d41\u30c7\u30d0\u30a4\u30b9\u304c\u6545\u969c\u3092\u89e3\u6d88\u3059\u308b\u306e\u3092\u300c\u5f85\u6a5f\u300d\u3057\u3066\u3044\u308b\u9593\u3001\u6700\u59271\u79d2\u959385kA\u306e\u6545\u969c\u96fb\u6d41\u306b\u8010\u3048\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u3053\u306e\u6a5f\u80fd\u306b\u306f\u3001\u5805\u7262\u306a\u6a5f\u68b0\u69cb\u9020\uff08\u5f37\u5316\u3055\u308c\u305f\u63a5\u70b9\u30a2\u30fc\u30e0\u3001\u9ad8\u3044\u63a5\u70b9\u5727\u529b\uff08\u96fb\u78c1\u53cd\u767a\u3092\u9632\u3050\uff09\u3001\u304a\u3088\u3073I.<\/p>\n<h3>t\u30a8\u30cd\u30eb\u30ae\u30fc\u3092\u5438\u53ce\u3059\u308b\u305f\u3081\u306e\u71b1\u8cea\u91cf\uff09\u304c\u5fc5\u8981\u3067\u3059\u3002<sub>cw<\/sub><\/h3>\n<p>\u30ab\u30c6\u30b4\u30eaA\uff1a\u5ba3\u8a00\u3055\u308c\u305fI <strong>\u30ab\u30c6\u30b4\u30ea\u30fcA<\/strong>\u3092\u6301\u305f\u306a\u3044MCCB<sub>cw<\/sub> \u30e2\u30fc\u30eb\u30c9\u30b1\u30fc\u30b9\u30b5\u30fc\u30ad\u30c3\u30c8\u30d6\u30ec\u30fc\u30ab\uff08MCCB\uff09\u306f\u3001\u901a\u5e38\u3001IEC 60947-2\u306b\u5f93\u3063\u3066\u300c\u77ed\u7d61\u6761\u4ef6\u4e0b\u3067\u306e\u9078\u629e\u906e\u65ad\u3092\u7279\u306b\u610f\u56f3\u3057\u3066\u3044\u306a\u3044\u300d\u30c7\u30d0\u30a4\u30b9\u3067\u3042\u308b <strong>\u306b\u5206\u985e\u3055\u308c\u307e\u3059\u3002\u3053\u308c\u3089\u306e\u30d6\u30ec\u30fc\u30ab\u30fc\u306f\u3001\u8a2d\u8a08\u601d\u60f3\u304c<\/strong> \u9577\u6642\u9593\u306e\u6545\u969c\u8010\u6027\u3088\u308a\u3082\u8fc5\u901f\u306a\u6545\u969c\u906e\u65ad\u3092\u512a\u5148\u3059\u308b\u305f\u3081\u3001I.<\/p>\n<p><strong>\u5024\u3092\u5ba3\u8a00\u3057\u307e\u305b\u3093\u3002<sub>cw<\/sub>:<\/strong><\/p>\n<ol>\n<li><strong>MCCB\u304cI<\/strong>\u3092\u5ba3\u8a00\u3057\u306a\u3044\u7406\u7531<sub>n<\/sub><\/li>\n<li><strong>\u96fb\u6d41\u5236\u9650\u8a2d\u8a08<\/strong>\uff1a\u6545\u969c\u96fb\u6d41\u304c\u301c10\u301c14\u00d7I<\/li>\n<li><strong>\u3092\u8d85\u3048\u305f\u5834\u5408\u306b\u8fc5\u901f\u306a\u96fb\u78c1\u53cd\u767a\u3092\u5bb9\u6613\u306b\u3059\u308b\u305f\u3081\u306b\u3001\u63a5\u70b9\u3070\u306d\u5727\u529b\u306f\u610f\u56f3\u7684\u306b\u4f4e\u304f\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/strong>\u77ac\u6642\u30c8\u30ea\u30c3\u30d7\u306e\u7fa9\u52d9<sup>2<\/sup>\uff1a\u307b\u3068\u3093\u3069\u306eMCCB\u306f\u77ac\u6642\u4fdd\u8b77\u3092\u7121\u52b9\u306b\u3067\u304d\u307e\u305b\u3093\u3002\u77ac\u6642\u95be\u5024\u3092\u8d85\u3048\u308b\u6545\u969c\u306f\u3001\u5373\u6642\u30c8\u30ea\u30c3\u30d7\u3092\u30c8\u30ea\u30ac\u30fc\u3057\u307e\u3059\u3002<\/li>\n<\/ol>\n<p>\u71b1\u7684\u5236\u9650 <strong>\u306a\u3044<\/strong> \uff1a\u30b3\u30f3\u30d1\u30af\u30c8\u306a\u30e2\u30fc\u30eb\u30c9\u69cb\u9020\u306f\u3001\u9577\u6642\u9593\u306e\u9ad8\u96fb\u6d41\u8010\u6027\u306b\u95a2\u9023\u3059\u308b\u71b1\u30a8\u30cd\u30eb\u30ae\u30fc\uff08I.<\/p>\n<hr \/>\n<h2>t\uff09\u3092\u653e\u6563\u3067\u304d\u307e\u305b\u3093\u3002<\/h2>\n<figure style=\"text-align: center; margin: 20px 0;\"><img decoding=\"async\" style=\"max-width: 100%; height: auto;\" src=\"https:\/\/img.viox.com\/MCCB-electromagnetic-contact-repulsion-mechanism-diagram-showing-force-balance-and-current-thresholds.webp\" alt=\"MCCB electromagnetic contact repulsion mechanism diagram showing force balance and current thresholds - VIOX Electric\" \/><figcaption style=\"font-style: italic; color: #555; margin-top: 8px;\">\u305f\u3060\u3057\u3001\u3053\u308c\u306f\u3001MCCB\u304c\u77ed\u6642\u9593\u8010\u6027\u80fd\u529b\u3092\u5b8c\u5168\u306b\u6b20\u3044\u3066\u3044\u308b\u3053\u3068\u3092\u610f\u5473\u3059\u308b\u3082\u306e\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u63a5\u70b9\u304c\u9589\u3058\u305f\u307e\u307e\u306b\u306a\u308b\u56fa\u6709\u306e\u3001\u5ba3\u8a00\u3055\u308c\u3066\u3044\u306a\u3044\u95be\u5024\u3092\u6301\u3063\u3066\u3044\u307e\u3059\u3002<\/figcaption><\/figure>\n<h3>MCCB\u63a5\u70b9\u53cd\u767a\u306e\u7269\u7406\u5b66<\/h3>\n<p>\u529b\u306e\u30d0\u30e9\u30f3\u30b9\u3068\u96fb\u6d41\u95be\u5024\u3092\u793a\u3059MCCB\u96fb\u78c1\u63a5\u70b9\u53cd\u767a\u30e1\u30ab\u30cb\u30ba\u30e0\u306e\u56f3 \u2013 VIOX Electric <strong>\u96fb\u78c1\u53cd\u767a\u529b<\/strong> \uff08\u30ed\u30fc\u30ec\u30f3\u30c4\u529b\uff09\u3002\u63a5\u70b9\u3092\u9589\u3058\u305f\u72b6\u614b\u306b\u4fdd\u3064\u305f\u3081\u306b\u306f\u3001\u63a5\u70b9\u3070\u306d\u304c\u3053\u306e\u529b\u306b\u6253\u3061\u52dd\u3064\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002.<\/p>\n<p><strong>\u529b\u306e\u5e73\u8861\u65b9\u7a0b\u5f0f\uff1a<\/strong><\/p>\n<p style=\"text-align: center; background-color: #f9f9f9; padding: 10px; border-radius: 4px;\">F<sub>\u3070\u306d<\/sub> &gt; F<sub>\u53cd\u767a\u529b<\/sub> = k \u00b7 I<sup>2<\/sup><\/p>\n<p>\u3069\u3053\u3067\u3060\uff1a<\/p>\n<ul>\n<li>F<sub>\u3070\u306d<\/sub> = \u63a5\u70b9\u3070\u306d\u306e\u5727\u7e2e\u529b<\/li>\n<li>F<sub>\u53cd\u767a\u529b<\/sub> = \u96fb\u78c1\u53cd\u767a\u529b\uff08I\u306b\u6bd4\u4f8b\uff09<sup>2<\/sup>)<\/li>\n<li>k = \u5e7e\u4f55\u5b66\u7684\u5b9a\u6570\uff08\u63a5\u70b9\u9593\u9694\u3001\u5c0e\u4f53\u69cb\u6210\uff09<\/li>\n<\/ul>\n<table style=\"border-collapse: collapse; width: 100%; margin: 20px 0;\" border=\"1\" cellpadding=\"10\">\n<thead>\n<tr style=\"background-color: #f2f2f2;\">\n<th>MCCB\u8a2d\u8a08\u30d1\u30e9\u30e1\u30fc\u30bf<\/th>\n<th>\u30ab\u30c6\u30b4\u30eaA\uff08MCCB\uff09<\/th>\n<th>\u30ab\u30c6\u30b4\u30eaB\uff08ACB\uff09<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>\u63a5\u70b9\u3070\u306d\u5727\u529b<\/strong><\/td>\n<td>\u4f4e\uff082-5 N\/mm\uff09<\/td>\n<td>\u9ad8\uff0810-20 N\/mm\uff09<\/td>\n<\/tr>\n<tr>\n<td><strong>\u53cd\u767a\u95be\u5024<\/strong><\/td>\n<td>12-14\u00d7 I<sub>n<\/sub><\/td>\n<td>&gt;50\u00d7 I<sub>n<\/sub><\/td>\n<\/tr>\n<tr>\n<td><strong>\u63a5\u70b9\u958b\u653e\u901f\u5ea6<\/strong><\/td>\n<td>3-7 ms\uff08\u8d85\u9ad8\u901f\uff09<\/td>\n<td>20-50 ms\uff08\u5236\u5fa1\uff09<\/td>\n<\/tr>\n<tr>\n<td><strong>\u30c7\u30b6\u30a4\u30f3\u512a\u5148<\/strong><\/td>\n<td>\u5236\u9650\u6545\u969c\u30a8\u30cd\u30eb\u30ae\u30fc\uff08I\u00b2t\uff09<sup>2<\/sup>I\u00b2t<\/td>\n<td>\u8010\u6545\u969c\u6642\u9593<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>\u30e2\u30fc\u30bf\u30fc\u59cb\u52d5\u306b\u95a2\u3059\u308b\u8003\u616e\u4e8b\u9805<\/h3>\n<p>\u4e0a\u6d77\u96fb\u6c17\u7814\u7a76\u6240\u306b\u3088\u308b52\u500b\u306e\u30e2\u30fc\u30bf\u30fc\u30b5\u30f3\u30d7\u30eb\u306b\u95a2\u3059\u308b\u8abf\u67fb\u3067\u306f\u3001\u5168\u96fb\u5727\u59cb\u52d5\uff08DOL\uff09\u306f\u3001\u6700\u521d\u306e\u30d4\u30fc\u30af\u7a81\u5165\u96fb\u6d41\u3092\u767a\u751f\u3055\u305b\u308b\u3053\u3068\u304c\u660e\u3089\u304b\u306b\u306a\u308a\u307e\u3057\u305f\u3002 <strong>8-12\u00d7 I<sub>n<\/sub><\/strong> \u307b\u3068\u3093\u3069\u306e\u30e2\u30fc\u30bf\u30fc\u3067\u3001\u5916\u308c\u5024\u306f13\u00d7 I\u306b\u9054\u3057\u307e\u3059\u3002<sub>n<\/sub>.<\/p>\n<p><strong>\u3053\u306e\u30c7\u30fc\u30bf\u306f\u3001MCCB\u306e\u8a2d\u8a08\u5236\u7d04\u3092\u63a8\u9032\u3057\u307e\u3059\u3002<\/strong><\/p>\n<ul>\n<li><strong>\u914d\u96fb\u7528MCCB<\/strong>\uff1a\u77ac\u6642\u30c8\u30ea\u30c3\u30d7\u306f10-12\u00d7 I\u306b\u8a2d\u5b9a<sub>n<\/sub> \uff08\u30b3\u30f3\u30c7\u30f3\u30b5\u7a81\u5165\u96fb\u6d41\u307e\u305f\u306f\u5909\u5727\u5668\u52b1\u78c1\u3067\u30c8\u30ea\u30c3\u30d7\u3057\u3066\u306f\u306a\u3089\u306a\u3044\uff09<\/li>\n<li><strong>\u30e2\u30fc\u30bf\u30fc\u5b9a\u683cMCCB<\/strong>\uff1a\u77ac\u6642\u30c8\u30ea\u30c3\u30d7\u306f13-14\u00d7 I\u306b\u8a2d\u5b9a<sub>n<\/sub> \uff08DOL\u59cb\u52d5\u3092\u4e57\u308a\u8d8a\u3048\u308b\u5fc5\u8981\u304c\u3042\u308b\uff09<\/li>\n<li><strong>\u63a5\u70b9\u53cd\u767a\u95be\u5024<\/strong>\uff1a\u59cb\u52d5\u904e\u6e21\u6642\u306b\u4e0d\u8981\u306a\u63a5\u70b9\u958b\u653e\u3092\u9632\u3050\u305f\u3081\u306b\u3001\u77ac\u6642\u30c8\u30ea\u30c3\u30d7\u8a2d\u5b9a\u309215\u301c20\uff05\u4e0a\u56de\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/li>\n<\/ul>\n<p><strong>100A\u30e2\u30fc\u30bf\u30fc\u5b9a\u683cMCCB\u306e\u8a08\u7b97\u4f8b\uff1a<\/strong><\/p>\n<div style=\"background-color: #f5f5f5; padding: 15px; border-radius: 5px; margin: 15px 0; font-family: monospace;\">\u77ac\u6642\u30c8\u30ea\u30c3\u30d7\u8a2d\u5b9a\uff1a13 \u00d7 100A = 1,300A<br \/>\n\u63a5\u70b9\u53cd\u767a\u95be\u5024\uff1a1,300A \u00d7 1.2 = 1,560A\uff08\u8a2d\u8a08\u76ee\u6a19\uff09<br \/>\n\u672a\u7533\u544a\u306e\u300cIcw\u300d\u80fd\u529b\uff1a\u301c1,500A\uff08\u53cd\u767a\u95be\u5024\u672a\u6e80\uff09<\/div>\n<p>\u3053\u306e1,500A\u306e\u95be\u5024\u306f\u3001MCCB\u306e\u56fa\u6709\u306e\u77ed\u6642\u9593\u8010\u91cf\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u308c\u306f\u30011,000\u301c1,500A\u306e\u6545\u969c\u7bc4\u56f2\u3067\u4e0b\u6d41\u30c7\u30d0\u30a4\u30b9\u3068\u306e\u5354\u8abf\u306b\u306f\u5341\u5206\u3067\u3059\u304c\u3001\u5ba3\u8a00\u3055\u308c\u305fACB\u306eIcw\u5024\uff08\u901a\u5e3830\u301c85kA\uff09\u3092\u306f\u308b\u304b\u306b\u4e0b\u56de\u3063\u3066\u3044\u307e\u3059\u3002<sub>cw<\/sub> \u5024\uff08\u901a\u5e3830\u301c85kA\uff09\u3002.<\/p>\n<hr \/>\n<h2>MCCB\u306e\u77ed\u6642\u9593\u9045\u5ef6\u306e\u5b9f\u969b\u306e\u4ed5\u7d44\u307f<\/h2>\n<figure style=\"text-align: center; margin: 20px 0;\"><img decoding=\"async\" style=\"max-width: 100%; height: auto;\" src=\"https:\/\/img.viox.com\/Technical-infographic-clean-202601280514.webp\" alt=\"MCCB three-zone protection logic diagram showing overload, short-time delay, and instantaneous trip thresholds - VIOX Electric\" \/><figcaption style=\"font-style: italic; color: #555; margin-top: 8px;\">\u904e\u8ca0\u8377\u3001\u77ed\u6642\u9593\u9045\u5ef6\u3001\u304a\u3088\u3073\u77ac\u6642\u30c8\u30ea\u30c3\u30d7\u95be\u5024\u3092\u793a\u3059MCCB\u306e3\u30be\u30fc\u30f3\u4fdd\u8b77\u30ed\u30b8\u30c3\u30af\u56f3\u2013 VIOX Electric<\/figcaption><\/figure>\n<h3>3\u3064\u306e\u52d5\u4f5c\u30be\u30fc\u30f3<\/h3>\n<p>\u6700\u65b0\u306e\u96fb\u5b50\u5f0f\u30c8\u30ea\u30c3\u30d7MCCB\u306f3\u3064\u306e\u4fdd\u8b77\u30be\u30fc\u30f3\u3092\u5099\u3048\u3066\u3044\u307e\u3059\u304c\u3001\u305d\u306e\u76f8\u4e92\u4f5c\u7528\u306fACB\u3068\u306f\u6839\u672c\u7684\u306b\u7570\u306a\u308a\u307e\u3059\u3002<\/p>\n<table style=\"border-collapse: collapse; width: 100%; margin: 20px 0;\" border=\"1\" cellpadding=\"10\">\n<thead>\n<tr style=\"background-color: #f2f2f2;\">\n<th>\u4fdd\u8b77\u30be\u30fc\u30f3<\/th>\n<th>\u8a2d\u5b9a\u7bc4\u56f2<\/th>\n<th>\u5b9f\u969b\u306e\u52d5\u4f5c<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>\u9577\u6642\u9593\uff08\u904e\u8ca0\u8377\uff09<\/strong><\/td>\n<td>0.4-1.0\u00d7 I<sub>n<\/sub>, \u30013-30\u79d2<\/td>\n<td>I\u00b2t\u8a08\u7b97\u306b\u3088\u308b\u71b1\u4fdd\u8b77<sup>2<\/sup>2-12\u00d7 I<\/td>\n<\/tr>\n<tr>\n<td><strong>\u77ed\u6642\u9593\u9045\u5ef6<\/strong><\/td>\n<td>\u30010.1-0.5\u79d2<sub>n<\/sub>, \u77ac\u6642\u95be\u5024\u672a\u6e80\u3067\u306e\u307f\u30a2\u30af\u30c6\u30a3\u30d6<\/td>\n<td><strong>10-14\u00d7 I<\/strong><\/td>\n<\/tr>\n<tr>\n<td><strong>\u77ac\u6642<\/strong><\/td>\n<td>\uff08\u56fa\u5b9a\u307e\u305f\u306f\u8abf\u6574\u53ef\u80fd\uff09<sub>n<\/sub> \u307b\u3068\u3093\u3069\u306eMCCB\u3067\u306f\u7121\u52b9\u306b\u3067\u304d\u307e\u305b\u3093<\/td>\n<td><strong>\u30b7\u30ca\u30ea\u30aa1\uff1a\u77ac\u6642\u95be\u5024\u672a\u6e80\u306e\u6545\u969c\u96fb\u6d41<\/strong><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>\u6761\u4ef6<\/h3>\n<p><strong>\uff1a\u6545\u969c\u96fb\u6d41 = 8\u00d7 I<\/strong>\uff08100A\u30d6\u30ec\u30fc\u30ab\u30fc\u306e\u5834\u5408800A\uff09<sub>n<\/sub> (800A for a 100A breaker)<\/p>\n<ol>\n<li>\u96fb\u6d41\u304c\u9577\u6642\u9593\u6574\u5b9a\u5024\u3092\u4e0a\u56de\u308b \u2192 \u77ed\u6642\u9593\u9045\u5ef6\u304c\u4f5c\u52d5<\/li>\n<li>\u96fb\u5b50\u5f0f\u30c8\u30ea\u30c3\u30d7\u30e6\u30cb\u30c3\u30c8\u304c\u30ab\u30a6\u30f3\u30c8\u30c0\u30a6\u30f3\u3092\u958b\u59cb (\u4f8b: 0.4\u79d2)<\/li>\n<li>\u6545\u969c\u304c\u7d99\u7d9a\u3059\u308b\u5834\u5408\u3001\u9045\u5ef6\u5f8c\u306b\u30c8\u30ea\u30c3\u30d7\u30b3\u30a4\u30eb\u304c\u52b1\u78c1<\/li>\n<li>\u84c4\u52e2\u6a5f\u69cb\u306b\u3088\u308a\u63a5\u70b9\u304c\u958b\u304f (\u958b\u6975\u6642\u9593: \u7d0420\uff5e30 ms)<\/li>\n<\/ol>\n<p><strong>\u7d50\u679c<\/strong>: \u4e0b\u6d41\u6a5f\u5668\u3068\u306e\u771f\u306e\u6642\u9650\u5354\u8abf<\/p>\n<h3>\u30b7\u30ca\u30ea\u30aa2: \u77ac\u6642\u6574\u5b9a\u5024\u3092\u8d85\u3048\u308b\u6545\u969c\u96fb\u6d41<\/h3>\n<p><strong>\uff1a\u6545\u969c\u96fb\u6d41 = 8\u00d7 I<\/strong>: \u6545\u969c\u96fb\u6d41 = 15\u00d7 I<sub>n<\/sub> (100A\u30d6\u30ec\u30fc\u30ab\u30fc\u306e\u5834\u5408\u30011,500A)<\/p>\n<ol>\n<li>\u96fb\u6d41\u304c\u77ac\u6642\u6574\u5b9a\u5024\u3092\u4e0a\u56de\u308b \u2192 \u96fb\u78c1\u30c8\u30ea\u30c3\u30d7\u304c\u5373\u5ea7\u306b\u4f5c\u52d5<\/li>\n<li>\u77ed\u6642\u9593\u9045\u5ef6\u8a2d\u5b9a\u306f <strong>\u30d0\u30a4\u30d1\u30b9\u3055\u308c\u308b<\/strong><\/li>\n<li>\u30c8\u30ea\u30c3\u30d7\u30b3\u30a4\u30eb\u304c5\uff5e10 ms\u4ee5\u5185\u306b\u52b1\u78c1<\/li>\n<li>\u63a5\u70b9\u304c\u958b\u304f\u304c\u3001\u6545\u969c\u96fb\u6d41\u304c\u65e2\u306b\u96fb\u78c1\u53cd\u767a\u3092\u5f15\u304d\u8d77\u3053\u3057\u3066\u3044\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b<\/li>\n<\/ol>\n<p><strong>\u7d50\u679c<\/strong>: \u610f\u56f3\u7684\u306a\u9045\u5ef6\u306a\u3057\u2014MCCB\u306f\u53ef\u80fd\u306a\u9650\u308a\u9ad8\u901f\u306b\u30c8\u30ea\u30c3\u30d7<\/p>\n<h3>\u30b7\u30ca\u30ea\u30aa3: \u53cd\u767a\u95be\u5024\u3092\u5927\u5e45\u306b\u8d85\u3048\u308b\u6545\u969c\u96fb\u6d41<\/h3>\n<p><strong>\uff1a\u6545\u969c\u96fb\u6d41 = 8\u00d7 I<\/strong>: \u6545\u969c\u96fb\u6d41 = 50\u00d7 I<sub>n<\/sub> (100A\u30d6\u30ec\u30fc\u30ab\u30fc\u306e\u5834\u5408\u30015,000A\u3001I\u306b\u8fd1\u3065\u304f)<sub>Icu<\/sub>)<\/p>\n<ol>\n<li>\u96fb\u78c1\u53cd\u767a\u529b\u304c\u30b9\u30d7\u30ea\u30f3\u30b0\u5727\u3092\u4e0a\u56de\u308b<\/li>\n<li>\u63a5\u70b9\u304c3\uff5e7 ms\u4ee5\u5185\u306b\u5439\u304d\u98db\u3076 (\u30c8\u30ea\u30c3\u30d7\u6a5f\u69cb\u3088\u308a\u3082\u9ad8\u901f)<\/li>\n<li>\u30a2\u30fc\u30af\u96fb\u5727\u304c\u6025\u901f\u306b\u4e0a\u6607\u3057\u3001\u30d4\u30fc\u30af\u96fb\u6d41\u3092\u5236\u9650 (\u9650\u6d41\u52d5\u4f5c)<\/li>\n<li>\u30a2\u30fc\u30af\u30a8\u30cd\u30eb\u30ae\u30fc\u304c\u30c8\u30ea\u30c3\u30d7\u6a5f\u69cb\u3092\u4f5c\u52d5\u3055\u305b\u308b\u304b\u3001\u30d6\u30ec\u30fc\u30ab\u30fc\u306f\u30a2\u30fc\u30af\u6d88\u5f27\u306e\u307f\u306b\u4f9d\u5b58<\/li>\n<\/ol>\n<p><strong>\u7d50\u679c<\/strong>: \u8d85\u9ad8\u901f\u9650\u6d41\u2014\u5354\u8abf\u306f\u3057\u306a\u3044\u304c\u3001I<sup>2<\/sup>t\u4f4e\u6e1b\u306b\u3088\u308b\u6a5f\u5668\u4fdd\u8b77<\/p>\n<hr \/>\n<h2>\u7279\u6b8a\u306a\u30b1\u30fc\u30b9: \u77ac\u6642\u30c8\u30ea\u30c3\u30d7\u3092\u7121\u52b9\u5316\u3067\u304d\u308bMCCB<\/h2>\n<h3>Schneider NSX \u201c\u30a8\u30cd\u30eb\u30ae\u30fc\u30c8\u30ea\u30c3\u30d7\u201d\u6a5f\u69cb<\/h3>\n<p>\u4e00\u90e8\u306e\u30cf\u30a4\u30a8\u30f3\u30c9MCCB (\u4f8b: Micrologic\u30c8\u30ea\u30c3\u30d7\u30e6\u30cb\u30c3\u30c8\u642d\u8f09\u306eSchneider Electric NSX) \u3067\u306f\u3001\u9078\u629e\u6027\u3092\u5411\u4e0a\u3055\u305b\u308b\u305f\u3081\u306b\u77ac\u6642\u4fdd\u8b77\u3092\u7121\u52b9\u306b\u3067\u304d\u307e\u3059\u3002\u305f\u3060\u3057\u3001\u3053\u308c\u3089\u306e\u30c7\u30d0\u30a4\u30b9\u306b\u306f\u3001 <strong>\u5f37\u5236\u7684\u306a\u5b89\u5168\u30aa\u30fc\u30d0\u30fc\u30e9\u30a4\u30c9<\/strong> \u201c\u30a8\u30cd\u30eb\u30ae\u30fc\u30c8\u30ea\u30c3\u30d7\u201d\u307e\u305f\u306f\u201c\u77ac\u6642\u30aa\u30fc\u30d0\u30fc\u30e9\u30a4\u30c9\u201d\u3068\u547c\u3070\u308c\u308b\u3082\u306e\u304c\u7d44\u307f\u8fbc\u307e\u308c\u3066\u3044\u307e\u3059\u3002\u201d<\/p>\n<p><strong>\u4ed5\u7d44\u307f\uff1a<\/strong><\/p>\n<ol>\n<li>\u30e6\u30fc\u30b6\u30fc\u304c\u77ac\u6642\u30c8\u30ea\u30c3\u30d7\u3092\u7121\u52b9\u306b\u3057\u3001\u77ed\u6642\u9593\u9045\u5ef6\u3092\u6709\u52b9\u306b\u3059\u308b (\u4f8b: 10\u00d7 I<sub>n<\/sub>, 0.4\u79d2)<\/li>\n<li>\u6545\u969c\u96fb\u6d41\u304c30\u00d7 I\u306b\u9054\u3059\u308b<sub>n<\/sub> (100A\u30d6\u30ec\u30fc\u30ab\u30fc\u306e\u5834\u5408\u30013,000A)<\/li>\n<li>\u63a5\u70b9\u304c\u53cd\u767a\u3057\u3001\u30a2\u30fc\u30af\u304c\u767a\u751f<\/li>\n<li>\u30a2\u30fc\u30af\u30a8\u30cd\u30eb\u30ae\u30fc\u304c\u30a2\u30fc\u30af\u30c1\u30e3\u30f3\u30d0\u30fc\u5185\u306e\u30ac\u30b9\u767a\u751f\u6750\u6599\u3092\u30a4\u30aa\u30f3\u5316<\/li>\n<li>\u5727\u529b\u4e0a\u6607\u306b\u3088\u308a\u300110\uff5e15 ms\u4ee5\u5185\u306b\u7a7a\u5727\u30c8\u30ea\u30c3\u30d7\u6a5f\u69cb\u304c\u4f5c\u52d5<\/li>\n<li>\u30d6\u30ec\u30fc\u30ab\u30fc\u304c\u30c8\u30ea\u30c3\u30d7 <strong>\u96fb\u5b50\u5f0f\u30c8\u30ea\u30c3\u30d7\u30e6\u30cb\u30c3\u30c8\u306e\u8a2d\u5b9a\u306b\u95a2\u4fc2\u306a\u304f<\/strong><\/li>\n<\/ol>\n<table style=\"border-collapse: collapse; width: 100%; margin: 20px 0;\" border=\"1\" cellpadding=\"10\">\n<thead>\n<tr style=\"background-color: #f2f2f2;\">\n<th>\u6545\u969c\u96fb\u6d41\u30ec\u30d9\u30eb<\/th>\n<th>NSX\u306e\u5fdc\u7b54<\/th>\n<th>\u6a19\u6e96\u7684\u306aMCCB\u306e\u5fdc\u7b54<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>8\u00d7 I<sub>n<\/sub><\/strong><\/td>\n<td>\u77ed\u6642\u9593\u9045\u5ef6\u304c\u6b63\u5e38\u306b\u6a5f\u80fd<\/td>\n<td>\u77ed\u6642\u9593\u9045\u5ef6\u304c\u6a5f\u80fd<\/td>\n<\/tr>\n<tr>\n<td><strong>15\u00d7 I<sub>n<\/sub><\/strong><\/td>\n<td>\u77ed\u6642\u9593\u9045\u5ef6\u304c\u6a5f\u80fd (\u77ac\u6642\u30c8\u30ea\u30c3\u30d7\u7121\u52b9)<\/td>\n<td>\u77ac\u6642\u30c8\u30ea\u30c3\u30d7 (\u7121\u52b9\u306b\u3067\u304d\u306a\u3044)<\/td>\n<\/tr>\n<tr>\n<td><strong>&gt;25\u00d7 I<sub>n<\/sub><\/strong><\/td>\n<td>\u30a8\u30cd\u30eb\u30ae\u30fc\u30c8\u30ea\u30c3\u30d7\u304c\u9045\u5ef6\u3092\u30aa\u30fc\u30d0\u30fc\u30e9\u30a4\u30c9<\/td>\n<td>\u63a5\u70b9\u53cd\u767a + \u77ac\u6642\u30c8\u30ea\u30c3\u30d7<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u3053\u306e\u8a2d\u8a08\u306b\u3088\u308a\u3001\u30e6\u30fc\u30b6\u30fc\u304c\u4fdd\u8b77\u8a2d\u5b9a\u3092\u8aa4\u3063\u3066\u69cb\u6210\u3057\u305f\u5834\u5408\u306e\u58ca\u6ec5\u7684\u306a\u6545\u969c\u3092\u9632\u304e\u307e\u3059\u2014MCCB\u306f\u3001\u9078\u629e\u6027\u3092\u640d\u306a\u3046\u5834\u5408\u3067\u3082\u3001\u6975\u7aef\u306a\u6545\u969c\u30ec\u30d9\u30eb\u3067\u5e38\u306b\u81ea\u5df1\u4fdd\u8b77\u3057\u307e\u3059\u3002.<\/p>\n<hr \/>\n<h2>\u5b9f\u7528\u7684\u306a\u5354\u8abf\u6226\u7565<\/h2>\n<figure style=\"text-align: center; margin: 20px 0;\"><img decoding=\"async\" style=\"max-width: 100%; height: auto;\" src=\"https:\/\/img.viox.com\/Time-current-coordination-diagram-showing-ACB-and-MCCB-selectivity-zones-with-fault-scenario-analysis.webp\" alt=\"Time-current coordination diagram showing ACB and MCCB selectivity zones with fault scenario analysis - VIOX Electric\" \/><figcaption style=\"font-style: italic; color: #555; margin-top: 8px;\">\u6545\u969c\u30b7\u30ca\u30ea\u30aa\u5206\u6790\u306b\u3088\u308bACB\u3068MCCB\u306e\u9078\u629e\u6027\u30be\u30fc\u30f3\u3092\u793a\u3059\u6642\u9593-\u96fb\u6d41\u5354\u8abf\u56f3 \u2013 VIOX Electric<\/figcaption><\/figure>\n<h3>\u6226\u75651: ACB-to-MCCB\u30ab\u30b9\u30b1\u30fc\u30c9 (\u63a8\u5968)<\/h3>\n<p><strong>\u30b3\u30f3\u30d5\u30a3\u30ae\u30e5\u30ec\u30fc\u30b7\u30e7\u30f3\uff1a<\/strong><\/p>\n<ul>\n<li><strong>\u4e0a\u6d41\u5074<\/strong>: 1600A ACB, I<sub>cw<\/sub> = 65kA\/0.5\u79d2, \u77ed\u6642\u9593\u9045\u5ef6 = 0.4\u79d2<\/li>\n<li><strong>\u4e0b\u6d41\u5074<\/strong>: 400A MCCB, I<sub>Icu<\/sub> = 50kA, \u77ac\u6642 = 5,000A (12.5\u00d7 I<sub>n<\/sub>)<\/li>\n<\/ul>\n<p><strong>\u5354\u8abf\u5206\u6790:<\/strong><\/p>\n<table style=\"border-collapse: collapse; width: 100%; margin: 20px 0;\" border=\"1\" cellpadding=\"10\">\n<thead>\n<tr style=\"background-color: #f2f2f2;\">\n<th>\u6545\u969c\u7b87\u6240<\/th>\n<th>\u6545\u969c\u96fb\u6d41<\/th>\n<th>\u4e0a\u6d41ACB\u306e\u52d5\u4f5c<\/th>\n<th>\u4e0b\u6d41MCCB\u306e\u52d5\u4f5c<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>\u4e0b\u6d41\u30d5\u30a3\u30fc\u30c0\u30fc<\/strong><\/td>\n<td>8 kA<\/td>\n<td>0.4\u79d2\u5f85\u6a5f (I<sub>cw<\/sub>)<\/td>\n<td>\u77ac\u6642\u30c8\u30ea\u30c3\u30d7\uff08&gt;12.5\u00d7 I<sub>n<\/sub>)<\/td>\n<\/tr>\n<tr>\n<td><strong>\u4e0b\u6d41\u30d5\u30a3\u30fc\u30c0\u30fc<\/strong><\/td>\n<td>45 kA<\/td>\n<td>0.4\u79d2\u5f85\u6a5f (I<sub>cw<\/sub>)<\/td>\n<td>\u77ac\u6642\u30c8\u30ea\u30c3\u30d7\uff08\u96fb\u6d41\u5236\u9650\uff09<\/td>\n<\/tr>\n<tr>\n<td><strong>\u4e3b\u6bcd\u7dda<\/strong><\/td>\n<td>60 kA<\/td>\n<td>0.4\u79d2\u5f8c\u306b\u30c8\u30ea\u30c3\u30d7<\/td>\n<td>\u5f71\u97ff\u3092\u53d7\u3051\u306a\u3044<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><strong>\u7d50\u679c<\/strong>\uff1a\u6700\u592750kA\u307e\u3067\u306e\u5b8c\u5168\u9078\u629e\u6027\uff08MCCB I<sub>Icu<\/sub> limit\uff09<\/p>\n<h3>\u6226\u75652\uff1aMCCB-MCCB\u9593\u5354\u8abf\uff08\u9650\u5b9a\u7684\uff09<\/h3>\n<p><strong>\u30b3\u30f3\u30d5\u30a3\u30ae\u30e5\u30ec\u30fc\u30b7\u30e7\u30f3\uff1a<\/strong><\/p>\n<ul>\n<li><strong>\u4e0a\u6d41\u5074<\/strong>\uff1a400A MCCB\u3001\u77ac\u6642 = 5,000A (12.5\u00d7 I<sub>n<\/sub>)<\/li>\n<li><strong>\u4e0b\u6d41\u5074<\/strong>\uff1a100A MCCB\u3001\u77ac\u6642 = 1,300A (13\u00d7 I<sub>n<\/sub>)<\/li>\n<\/ul>\n<p><strong>\u5354\u8abf\u5206\u6790:<\/strong><\/p>\n<table style=\"border-collapse: collapse; width: 100%; margin: 20px 0;\" border=\"1\" cellpadding=\"10\">\n<thead>\n<tr style=\"background-color: #f2f2f2;\">\n<th>\u6545\u969c\u96fb\u6d41<\/th>\n<th>\u4e0a\u6d41MCCB<\/th>\n<th>\u4e0b\u6d41MCCB<\/th>\n<th>\u9078\u629e\u6027\uff1f<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>1,500A<\/strong><\/td>\n<td>\u77ed\u6642\u9593\u9045\u5ef6\uff080.3\u79d2\uff09<\/td>\n<td>\u30a4\u30f3\u30b9\u30bf\u30f3\u30c8\u30c8\u30ea\u30c3\u30d7<\/td>\n<td>\u2705 \u306f\u3044<\/td>\n<\/tr>\n<tr>\n<td><strong>4,000A<\/strong><\/td>\n<td>\u77ed\u6642\u9593\u9045\u5ef6\uff080.3\u79d2\uff09<\/td>\n<td>\u30a4\u30f3\u30b9\u30bf\u30f3\u30c8\u30c8\u30ea\u30c3\u30d7<\/td>\n<td>\u2705 \u306f\u3044<\/td>\n<\/tr>\n<tr>\n<td><strong>6,000A<\/strong><\/td>\n<td><strong>\u30a4\u30f3\u30b9\u30bf\u30f3\u30c8\u30c8\u30ea\u30c3\u30d7<\/strong><\/td>\n<td>\u30a4\u30f3\u30b9\u30bf\u30f3\u30c8\u30c8\u30ea\u30c3\u30d7<\/td>\n<td>\u274c \u3044\u3044\u3048\uff08\u4e21\u65b9\u30c8\u30ea\u30c3\u30d7\uff09<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><strong>\u9078\u629e\u6027\u5236\u9650<\/strong>\uff1a\u301c4,500A\uff08\u4e0a\u6d41\u77ac\u6642\u8a2d\u5b9a\u306e90%\uff09<\/p>\n<p><strong>\u6539\u5584<\/strong>\uff1a\u30e1\u30fc\u30ab\u30fc\u306e\u5354\u8abf\u30c6\u30fc\u30d6\u30eb\u3092\u4f7f\u7528\u3057\u3066\u3001\u5b9f\u969b\u306e\u901a\u3057\u30a8\u30cd\u30eb\u30ae\u30fc\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u96fb\u6d41\u5236\u9650MCCB\u306f\u3001I<sup>2<\/sup>t\u8b58\u5225\u306b\u3088\u308a\u3001\u3088\u308a\u9ad8\u3044\u6545\u969c\u30ec\u30d9\u30eb\u3067\u3082\u9078\u629e\u6027\u3092\u9054\u6210\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002.<\/p>\n<hr \/>\n<h2>\u6bd4\u8f03\u8868\uff1aACB\u3068MCCB\u306e\u77ed\u6642\u9593\u7279\u6027<\/h2>\n<table style=\"border-collapse: collapse; width: 100%; margin: 20px 0;\" border=\"1\" cellpadding=\"10\">\n<thead>\n<tr style=\"background-color: #f2f2f2;\">\n<th>\u7279\u5fb4<\/th>\n<th>ACB\uff08\u30ab\u30c6\u30b4\u30eaB\uff09<\/th>\n<th>MCCB\uff08\u30ab\u30c6\u30b4\u30eaA\uff09<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>I<sub>cw<\/sub> \u5ba3\u8a00<\/strong><\/td>\n<td>\u2705 \u306f\u3044\uff0830-85 kA\u30010.05-1.0\u79d2\uff09<\/td>\n<td>\u274c \u3044\u3044\u3048\uff08\u672a\u5ba3\u8a00\uff09<\/td>\n<\/tr>\n<tr>\n<td><strong>\u56fa\u6709\u306e\u8010\u6027<\/strong><\/td>\n<td>\u975e\u5e38\u306b\u9ad8\u3044\uff08&gt;50\u00d7 I<sub>n<\/sub>)<\/td>\n<td>\u9650\u5b9a\u7684\uff0812-14\u00d7 I<sub>n<\/sub>)<\/td>\n<\/tr>\n<tr>\n<td><strong>\u63a5\u70b9\u3070\u306d\u5727\u529b<\/strong><\/td>\n<td>\u9ad8\u3044\uff08\u53cd\u767a\u3092\u9632\u3050\uff09<\/td>\n<td>\u4f4e\u3044\uff08\u96fb\u6d41\u5236\u9650\u3092\u53ef\u80fd\u306b\u3059\u308b\uff09<\/td>\n<\/tr>\n<tr>\n<td><strong>\u77ac\u6642\u30c8\u30ea\u30c3\u30d7<\/strong><\/td>\n<td>\u7121\u52b9\u306b\u3067\u304d\u308b<\/td>\n<td>\u901a\u5e38\u56fa\u5b9a\uff08\u7121\u52b9\u306b\u3067\u304d\u306a\u3044\uff09<\/td>\n<\/tr>\n<tr>\n<td><strong>\u77ed\u6642\u9593\u9045\u5ef6\u7bc4\u56f2<\/strong><\/td>\n<td>0.05\u301c1.0\u79d2\uff08\u8abf\u6574\u53ef\u80fd\uff09<\/td>\n<td>0.1\u301c0.5\u79d2\uff08\u77ac\u6642\u95be\u5024\u672a\u6e80\u306e\u307f\uff09<\/td>\n<\/tr>\n<tr>\n<td><strong>\u5354\u8abf\u65b9\u6cd5<\/strong><\/td>\n<td>\u6642\u9593\u30d9\u30fc\u30b9\uff08\u771f\u306e\u9045\u5ef6\uff09<\/td>\n<td>\u96fb\u6d41\u30d9\u30fc\u30b9\uff08\u5236\u9650+\u9045\u5ef6\uff09<\/td>\n<\/tr>\n<tr>\n<td><strong>\u5178\u578b\u7684\u306a\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3<\/strong><\/td>\n<td>\u4e3b\u96fb\u6e90\uff081000-6300A\uff09<\/td>\n<td>\u30d5\u30a3\u30fc\u30c0\u30fc\u4fdd\u8b77\uff0816-1600A\uff09<\/td>\n<\/tr>\n<tr>\n<td><strong>\u4e0b\u6d41\u3068\u306e\u9078\u629e\u6027<\/strong><\/td>\n<td>\u30d5\u30eb\uff08\u6700\u5927I<sub>cw<\/sub>)<\/td>\n<td>\u90e8\u5206\u7684\uff08\u77ac\u6642\u95be\u5024\u307e\u3067\uff09<\/td>\n<\/tr>\n<tr>\n<td><strong>\u81ea\u5df1\u4fdd\u8b77\u30e1\u30ab\u30cb\u30ba\u30e0<\/strong><\/td>\n<td>\u71b1\u8cea\u91cf+\u6a5f\u68b0\u7684\u5f37\u5ea6<\/td>\n<td>\u63a5\u70b9\u53cd\u767a+\u30a2\u30fc\u30af\u5236\u9650<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<hr \/>\n<h2>\u3053\u308c\u304c\u30b7\u30b9\u30c6\u30e0\u8a2d\u8a08\u306b\u3068\u3063\u3066\u91cd\u8981\u306a\u7406\u7531<\/h2>\n<h3>\u8aa4\u89e31\uff1a\u300cMCCB\u77ed\u6642\u9593\u9045\u5ef6= ACB\u77ed\u6642\u9593\u9045\u5ef6\u300d\u201c<\/h3>\n<p><strong>\u73fe\u5b9f<\/strong>\uff1aMCCB\u77ed\u6642\u9593\u9045\u5ef6\u306f\u3001\u72ed\u3044\u96fb\u6d41\u30a6\u30a3\u30f3\u30c9\u30a6\uff08\u9577\u6642\u9593\u95be\u5024\u3068\u77ac\u6642\u95be\u5024\u306e\u9593\uff09\u5185\u3067\u306e\u307f\u6a5f\u80fd\u3057\u307e\u3059\u3002\u77ac\u6642\u8a2d\u5b9a\u3092\u8d85\u3048\u308b\u6545\u969c\u306e\u5834\u5408\u3001MCCB\u306f\u3059\u3050\u306b\u30c8\u30ea\u30c3\u30d7\u3057\u3001\u9045\u5ef6\u306f\u767a\u751f\u3057\u307e\u305b\u3093\u3002.<\/p>\n<p><strong>\u8a2d\u8a08\u3078\u306e\u5f71\u97ff<\/strong>\uff1aMCCB\u4fdd\u8b77\u3092\u6307\u5b9a\u3059\u308b\u5834\u5408\u306f\u3001\u5e38\u306b\u4ee5\u4e0b\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<ol>\n<li>\u4e0b\u6d41\u30c7\u30d0\u30a4\u30b9\u306e\u77ac\u6642\u8a2d\u5b9a<\/li>\n<li>\u5354\u8abf\u30dd\u30a4\u30f3\u30c8\u3067\u306e\u6700\u5927\u6545\u969c\u96fb\u6d41<\/li>\n<li>\u6545\u969c\u96fb\u6d41\u304c\u4e0a\u6d41MCCB\u306e\u77ac\u6642\u95be\u5024\u3092\u8d85\u3048\u308b\u304b\u3069\u3046\u304b<\/li>\n<\/ol>\n<h3>\u8aa4\u89e32\uff1a\u300cI<sub>cw<\/sub> \u5b9a\u683c=\u77ed\u6642\u9593\u8010\u91cf\u306a\u3057\u300d\u201d<\/h3>\n<p><strong>\u73fe\u5b9f<\/strong>\uff1aMCCB\u306f\u3001\u63a5\u70b9\u53cd\u767a\u95be\u5024\uff08\u301c12-14\u00d7 I<sub>n<\/sub>\uff09\u307e\u3067\u56fa\u6709\u306e\u77ed\u6642\u9593\u8010\u91cf\u3092\u6301\u3063\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u6a5f\u80fd\u306b\u3088\u308a\u3001ACB\u307b\u3069\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u304c\u3001\u4e0b\u6d41\u30c7\u30d0\u30a4\u30b9\u3068\u306e\u9650\u5b9a\u7684\u306a\u5354\u8abf\u304c\u53ef\u80fd\u3067\u3059\u3002.<\/p>\n<p><strong>\u8a2d\u8a08\u3078\u306e\u5f71\u97ff<\/strong>\uff1aMCCB-MCCB\u9593\u5354\u8abf\u306f\u53ef\u80fd\u3067\u3059\u304c\u3001\u4ee5\u4e0b\u304c\u5fc5\u8981\u3067\u3059\u3002<\/p>\n<ul>\n<li>\u614e\u91cd\u306a\u77ac\u6642\u8a2d\u5b9a\u5206\u96e2\uff08\u6700\u5c0f1.5\uff1a1\u306e\u6bd4\u7387\uff09<\/li>\n<li>\u30e1\u30fc\u30ab\u30fc\u63d0\u4f9b\u306e\u9078\u629e\u6027\u30c6\u30fc\u30d6\u30eb<\/li>\n<li>\u901a\u904e\u30a8\u30cd\u30eb\u30ae\u30fc\u306b\u5bfe\u3059\u308b\u96fb\u6d41\u5236\u9650\u52b9\u679c\u306e\u8003\u5bdf<\/li>\n<\/ul>\n<h3>\u8aa4\u89e3 3: \u300c\u77ac\u6642\u30c8\u30ea\u30c3\u30d7\u3092\u7121\u52b9\u306b\u3059\u308b\u3068 MCCB = ACB \u306b\u306a\u308b\u300d\u201c<\/h3>\n<p><strong>\u73fe\u5b9f<\/strong>: \u77ac\u6642\u30c8\u30ea\u30c3\u30d7\u3092\u7121\u52b9\u306b\u3067\u304d\u308b MCCB (\u4f8b: NSX) \u3067\u3042\u3063\u3066\u3082\u3001\u6975\u7aef\u306a\u6545\u969c\u30ec\u30d9\u30eb (&gt;25\u00d7 I<sub>n<\/sub>) \u3067\u306f\u30c8\u30ea\u30c3\u30d7\u3092\u5f37\u5236\u3059\u308b\u30a8\u30cd\u30eb\u30ae\u30fc\u30d9\u30fc\u30b9\u306e\u30aa\u30fc\u30d0\u30fc\u30e9\u30a4\u30c9\u6a5f\u69cb\u304c\u7d44\u307f\u8fbc\u307e\u308c\u3066\u3044\u307e\u3059\u3002ACB \u306e\u3088\u3046\u306b\u9ad8\u3044\u6545\u969c\u96fb\u6d41\u3092\u300c\u5f85\u3064\u300d\u3053\u3068\u306f\u3067\u304d\u307e\u305b\u3093\u3002.<\/p>\n<p><strong>\u8a2d\u8a08\u3078\u306e\u5f71\u97ff<\/strong>: \u8abf\u6574\u53ef\u80fd\u306a\u77ac\u6642\u30c8\u30ea\u30c3\u30d7\u4ed8\u304d\u306e MCCB \u3092\u4f7f\u7528\u3059\u308b\u5834\u5408:<\/p>\n<ul>\n<li>\u30e1\u30fc\u30ab\u30fc\u306b\u30a8\u30cd\u30eb\u30ae\u30fc \u30c8\u30ea\u30c3\u30d7\u95be\u5024\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044<\/li>\n<li>I \u306b\u8fd1\u3065\u304f\u6545\u969c\u96fb\u6d41\u3067 ACB \u306e\u3088\u3046\u306a\u52d5\u4f5c\u3092\u60f3\u5b9a\u3057\u306a\u3044\u3067\u304f\u3060\u3055\u3044<sub>Icu<\/sub><\/li>\n<li>\u9045\u5ef6\u30c8\u30ea\u30c3\u30d7\u306b\u3088\u308b\u30a2\u30fc\u30af\u30d5\u30e9\u30c3\u30b7\u30e5 \u30a8\u30cd\u30eb\u30ae\u30fc\u3078\u306e\u5f71\u97ff\u3092\u8003\u616e\u3057\u3066\u304f\u3060\u3055\u3044<\/li>\n<\/ul>\n<hr \/>\n<h2>\u5185\u90e8\u30ea\u30f3\u30af\u3068\u95a2\u9023\u30ea\u30bd\u30fc\u30b9<\/h2>\n<p>\u95a2\u9023\u3059\u308b\u4fdd\u8b77\u6982\u5ff5\u3092\u3088\u308a\u6df1\u304f\u7406\u89e3\u3059\u308b\u306b\u306f\u3001\u6b21\u306e VIOX \u30c6\u30af\u30cb\u30ab\u30eb \u30ac\u30a4\u30c9\u3092\u3054\u89a7\u304f\u3060\u3055\u3044\u3002<\/p>\n<ul>\n<li><a href=\"https:\/\/test.viox.com\/ja\/electrical-derating-temperature-altitude-grouping-factors\/\"><strong>\u96fb\u6c17\u7684\u30c7\u30a3\u30ec\u30fc\u30c6\u30a3\u30f3\u30b0\uff1a\u6e29\u5ea6\u3001\u9ad8\u5ea6\u3001\u304a\u3088\u3073\u30b0\u30eb\u30fc\u30d7\u5316\u4fc2\u6570<\/strong><\/a> \u2013 \u74b0\u5883\u8981\u56e0\u304c\u30d6\u30ec\u30fc\u30ab\u30fc\u306e\u96fb\u6d41\u5b9a\u683c\u3068\u5354\u8abf\u306b\u3069\u306e\u3088\u3046\u306b\u5f71\u97ff\u3059\u308b\u304b\u3092\u5b66\u3073\u307e\u3059<\/li>\n<li><a href=\"https:\/\/test.viox.com\/ja\/ats-circuit-breaker-coordination-guide-icw-selectivity\/\"><strong>ATS \u304a\u3088\u3073\u56de\u8def\u30d6\u30ec\u30fc\u30ab\u30fc\u306e\u5354\u8abf\u30ac\u30a4\u30c9: I<sub>cw<\/sub> &amp; \u9078\u629e\u6027\u306b\u3064\u3044\u3066\u89e3\u8aac<\/strong><\/a> \u2013 \u81ea\u52d5\u5207\u63db\u30b9\u30a4\u30c3\u30c1 \u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306b\u304a\u3051\u308b\u30ab\u30c6\u30b4\u30ea A \u3068 B \u306e\u5354\u8abf\u306e\u8a73\u7d30\u306a\u5206\u6790<\/li>\n<li><a href=\"https:\/\/test.viox.com\/ja\/current-limiting-circuit-breaker-guide\/\"><strong>\u96fb\u6d41\u5236\u9650\u56de\u8def\u30d6\u30ec\u30fc\u30ab\u30fc\u306e\u30ac\u30a4\u30c9\uff1a\u4fdd\u8b77&amp;\u30b9\u30da\u30c3\u30af<\/strong><\/a> \u2013 \u96fb\u78c1\u53cd\u767a\u306e\u7269\u7406\u5b66\u3068 I<sup>2<\/sup>t \u5236\u9650\u306e\u8a73\u7d30\u306a\u89e3\u8aac<\/li>\n<li><a href=\"https:\/\/test.viox.com\/ja\/types-of-circuit-breakers\/\"><strong>\u56de\u8def\u906e\u65ad\u5668\u306e\u7a2e\u985e\uff1a\u5b8c\u5168\u5206\u985e\u30ac\u30a4\u30c9<\/strong><\/a> \u2013 ACB\u3001MCCB\u3001MCB \u306e\u9055\u3044\u3068\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u5305\u62ec\u7684\u306a\u6982\u8981<\/li>\n<li><a href=\"https:\/\/test.viox.com\/ja\/commercial-ev-charging-protection-guide-acb-mccb-rcbo\/\"><strong>\u5546\u7528 EV \u5145\u96fb\u4fdd\u8b77\u30ac\u30a4\u30c9: ACB\u3001MCCB &amp; \u30bf\u30a4\u30d7 B RCBO<\/strong><\/a> \u2013 \u8ca0\u8377\u8a08\u7b97\u3092\u542b\u3080\u5b9f\u969b\u306e\u5354\u8abf\u306e\u4f8b<\/li>\n<\/ul>\n<hr \/>\n<h2>FAQ: MCCB \u77ed\u6642\u9593\u4fdd\u8b77<\/h2>\n<h3>Q1: ACB \u306e\u4ee3\u308f\u308a\u306b MCCB \u3092\u4e3b\u96fb\u6e90\u3068\u3057\u3066\u4f7f\u7528\u3067\u304d\u307e\u3059\u304b?<\/h3>\n<p><strong>A<\/strong>: \u53ef\u80fd\u3067\u3059\u304c\u3001\u5b8c\u5168\u306a\u9078\u629e\u6027\u304c\u5fc5\u8981\u306a\u30b7\u30b9\u30c6\u30e0\u306b\u306f\u304a\u52e7\u3081\u3067\u304d\u307e\u305b\u3093\u3002MCCB \u306b\u306f\u5ba3\u8a00\u3055\u308c\u305f I<sub>cw<\/sub> \u5b9a\u683c\u304c\u306a\u3044\u305f\u3081\u3001\u9ad8\u3044\u6545\u969c\u96fb\u6d41 (&gt;10\u00d7 I<sub>n<\/sub>) \u3067\u306e\u4e0b\u6d41\u306e\u5354\u8abf\u306e\u305f\u3081\u306b\u30c8\u30ea\u30c3\u30d7\u3092\u78ba\u5b9f\u306b\u9045\u3089\u305b\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u305b\u3093\u3002\u9078\u629e\u6027\u304c\u91cd\u8981\u306a\u7523\u696d\u65bd\u8a2d\u3067\u306f ACB \u3092\u4e3b\u96fb\u6e90\u3068\u3057\u3066\u4f7f\u7528\u3059\u308b\u304b\u3001\u5546\u7528\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u5834\u5408\u306f\u30e1\u30fc\u30ab\u30fc\u306e\u8868\u3067\u5354\u8abf\u5236\u9650\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002.<\/p>\n<h3>Q2: MCCB \u306e\u77ed\u6642\u9593\u9045\u5ef6\u3092 0.5 \u79d2\u306b\u8a2d\u5b9a\u3057\u305f\u304c\u3001\u6545\u969c\u96fb\u6d41\u304c 20\u00d7 I \u306e\u5834\u5408\u306f\u3069\u3046\u306a\u308a\u307e\u3059\u304b?<sub>n<\/sub>?<\/h3>\n<p><strong>A<\/strong>: \u30d6\u30ec\u30fc\u30ab\u30fc\u306f\u30c8\u30ea\u30c3\u30d7\u3057\u307e\u3059 <strong>\u5373\u5ea7\u306b<\/strong> \u78c1\u6c17\u30c8\u30ea\u30c3\u30d7\u7d4c\u7531\u3067\u30010.5 \u79d2\u306e\u9045\u5ef6\u8a2d\u5b9a\u306f\u7121\u8996\u3055\u308c\u307e\u3059\u3002MCCB \u306e\u77ed\u6642\u9593\u9045\u5ef6\u306f\u3001\u6545\u969c\u96fb\u6d41\u304c\u77ed\u6642\u9593\u30d4\u30c3\u30af\u30a2\u30c3\u30d7 (\u4f8b: 2 \uff5e 10\u00d7 I<sub>n<\/sub>) \u3068\u77ac\u6642\u95be\u5024 (\u4f8b: 12\u00d7 I<sub>n<\/sub>) \u306e\u9593\u306b\u7559\u307e\u308b\u5834\u5408\u306b\u306e\u307f\u6a5f\u80fd\u3057\u307e\u3059\u3002\u77ac\u6642\u3092\u8d85\u3048\u308b\u3068\u3001\u78c1\u6c17\u8981\u7d20\u304c\u96fb\u5b50\u8a2d\u5b9a\u3092\u30aa\u30fc\u30d0\u30fc\u30e9\u30a4\u30c9\u3057\u307e\u3059\u3002.<\/p>\n<h3>Q3: \u3059\u3079\u3066\u306e MCCB \u304c\u96fb\u6d41\u5236\u9650\u6280\u8853\u3092\u4f7f\u7528\u3057\u3066\u3044\u307e\u3059\u304b?<\/h3>\n<p><strong>A<\/strong>: \u3044\u3044\u3048\u3002\u71b1\u78c1\u6c17 MCCB (\u56fa\u5b9a\u30c8\u30ea\u30c3\u30d7\u3001\u8abf\u6574\u4e0d\u53ef) \u306f\u901a\u5e38\u3001\u3088\u308a\u9045\u3044\u30d0\u30a4\u30e1\u30bf\u30eb\u904e\u8ca0\u8377\u8981\u7d20\u3092\u4f7f\u7528\u3057\u3066\u304a\u308a\u3001\u771f\u306e\u96fb\u6d41\u5236\u9650\u3092\u9054\u6210\u3067\u304d\u306a\u3044\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002\u9ad8\u901f\u4f5c\u52d5\u63a5\u70b9\u3068\u6700\u9069\u5316\u3055\u308c\u305f\u30a2\u30fc\u30af\u30b7\u30e5\u30fc\u30c8\u3092\u5099\u3048\u305f\u96fb\u5b50\u30c8\u30ea\u30c3\u30d7 MCCB \u306f\u3001\u96fb\u6d41\u5236\u9650\u3055\u308c\u308b\u53ef\u80fd\u6027\u304c\u9ad8\u304f\u306a\u308a\u307e\u3059 (\u30e1\u30fc\u30ab\u30fc\u306e\u901a\u904e\u66f2\u7dda\u3067 I<sub>p<\/sub> \u304a\u3088\u3073 I<sup>2<\/sup>t \u5024\u304c\u4e88\u60f3\u3055\u308c\u308b\u6545\u969c\u30ec\u30d9\u30eb\u3092\u4e0b\u56de\u3063\u3066\u3044\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044)\u3002.<\/p>\n<h3>Q4: 2 \u3064\u306e MCCB \u9593\u306e\u9078\u629e\u6027\u3092\u78ba\u8a8d\u3059\u308b\u306b\u306f\u3069\u3046\u3059\u308c\u3070\u3088\u3044\u3067\u3059\u304b?<\/h3>\n<p><strong>A<\/strong>: \u30e1\u30fc\u30ab\u30fc\u306e\u5354\u8abf\u8868\u3092\u4f7f\u7528\u3057\u307e\u3059 (\u6642\u9593\u96fb\u6d41\u66f2\u7dda\u3060\u3051\u3067\u306f\u3042\u308a\u307e\u305b\u3093)\u3002\u8868\u306f\u4ee5\u4e0b\u3092\u8003\u616e\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<ul>\n<li>\u4e0b\u6d41\u30d6\u30ec\u30fc\u30ab\u30fc\u306e\u901a\u904e\u30a8\u30cd\u30eb\u30ae\u30fc (I<sup>2<\/sup>t)<\/li>\n<li>\u4e0a\u6d41\u30d6\u30ec\u30fc\u30ab\u30fc\u306e\u975e\u30c8\u30ea\u30c3\u30d7 \u30a8\u30cd\u30eb\u30ae\u30fc\u95be\u5024<\/li>\n<li>\u3055\u307e\u3056\u307e\u306a\u6545\u969c\u30ec\u30d9\u30eb\u3067\u306e\u96fb\u6d41\u5236\u9650\u52b9\u679c<br \/>\n\u4f8b: Schneider Electric \u306f\u3001\u5354\u8abf\u30ac\u30a4\u30c9\u306b\u8a73\u7d30\u306a\u9078\u629e\u6027\u8868\u3092\u63d0\u4f9b\u3057\u3066\u304a\u308a\u3001\u7279\u5b9a\u306e MCCB \u30e2\u30c7\u30eb\u9593\u306e\u6700\u5927\u9078\u629e\u6027\u5236\u9650 (\u4f8b: \u300c\u6700\u5927 15kA \u307e\u3067\u9078\u629e\u7684\u300d) \u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002.<\/li>\n<\/ul>\n<h3>Q5: \u30e2\u30fc\u30bf\u30fc\u5b9a\u683c\u306e MCCB \u306e\u77ac\u6642\u8a2d\u5b9a\u304c\u9ad8\u3044 (13 \uff5e 14\u00d7 I<sub>n<\/sub>)?<\/h3>\n<p><strong>A<\/strong>) \u306e\u306f\u306a\u305c\u3067\u3059\u304b?<sub>n<\/sub> : \u76f4\u5165\u308c (DOL) \u30e2\u30fc\u30bf\u30fc\u306e\u59cb\u52d5\u4e2d\u306b\u8aa4\u30c8\u30ea\u30c3\u30d7\u3092\u9632\u3050\u305f\u3081\u3067\u3059\u3002\u8abf\u67fb\u306b\u3088\u308b\u3068\u3001\u30e2\u30fc\u30bf\u30fc\u306e\u7a81\u5165\u96fb\u6d41\u306f\u6700\u521d\u306e\u30d4\u30fc\u30af\u3067 12 \uff5e 13\u00d7 I<sub>n<\/sub>\u306b\u9054\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u30e2\u30fc\u30bf\u30fc\u5b9a\u683c\u306e MCCB \u306f\u3001\u63a5\u70b9\u306e\u53cd\u767a\u95be\u5024\u3082\u9ad8\u304f (&gt;14\u00d7 I.<\/p>\n<hr \/>\n<h2>\u7d50\u8ad6<\/h2>\n<p>)\u3001\u59cb\u52d5\u904e\u6e21\u73fe\u8c61\u4e2d\u306b\u63a5\u70b9\u304c\u5439\u304d\u98db\u3070\u306a\u3044\u3088\u3046\u306b\u3057\u307e\u3059\u3002\u5439\u304d\u98db\u3076\u3068\u3001\u4e0d\u8981\u306a\u6469\u8017\u3084\u518d\u9589\u8def\u6642\u306e\u6eb6\u7740\u304c\u767a\u751f\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<sub>cw<\/sub> \u5b9a\u683c I \u306e\u306a\u3044\u77ed\u6642\u9593\u9045\u5ef6\u4fdd\u8b77\u3092\u63d0\u4f9b\u3059\u308b MCCB \u306e\u660e\u3089\u304b\u306a\u30d1\u30e9\u30c9\u30c3\u30af\u30b9 <strong>\u5024\u306f\u3001\u4fdd\u8b77\u306e\u8003\u3048\u65b9\u306e\u6839\u672c\u7684\u306a\u9055\u3044\u306b\u8d77\u56e0\u3057\u307e\u3059\u3002.<\/strong><\/p>\n<p>ACB \u306f\u6a5f\u68b0\u7684\u5f37\u5ea6\u3068\u71b1\u8cea\u91cf\u306b\u3088\u3063\u3066\u6545\u969c\u306b\u8010\u3048\u307e\u3059\u304c\u3001MCCB \u306f\u96fb\u78c1\u7269\u7406\u5b66\u3068\u8fc5\u901f\u306a\u30a2\u30fc\u30af\u906e\u65ad\u306b\u3088\u3063\u3066\u6545\u969c\u3092\u5236\u9650\u3057\u307e\u3059\u3002<sub>n<\/sub>\u3053\u306e\u533a\u5225\u3092\u7406\u89e3\u3059\u308b\u3053\u3068\u306f\u3001\u5354\u8abf\u30b9\u30ad\u30fc\u30e0\u3092\u8a2d\u8a08\u3059\u308b\u96fb\u6c17\u30a8\u30f3\u30b8\u30cb\u30a2\u306b\u3068\u3063\u3066\u91cd\u8981\u3067\u3059\u3002MCCB \u306f\u3001\u56fa\u6709\u306e\u77ed\u6642\u9593\u8010\u91cf (\u901a\u5e38 12 \uff5e 14\u00d7 I.<\/p>\n<p><strong>) \u5185\u3067\u4e0b\u6d41\u30c7\u30d0\u30a4\u30b9\u3068\u306e\u9078\u629e\u7684\u306a\u5354\u8abf\u3092\u5b9f\u73fe\u3067\u304d\u307e\u3059\u304c\u3001\u906e\u65ad\u5bb9\u91cf\u306b\u8fd1\u3065\u304f\u9ad8\u3044\u6545\u969c\u96fb\u6d41\u3067 ACB \u306e\u52d5\u4f5c\u3092\u518d\u73fe\u3059\u308b\u3053\u3068\u306f\u3067\u304d\u307e\u305b\u3093\u3002\u6545\u969c\u96fb\u6d41\u7bc4\u56f2\u5168\u4f53\u3067\u5b8c\u5168\u306a\u9078\u629e\u6027\u304c\u5fc5\u8981\u306a\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u5834\u5408\u3001ACB \u4e3b\u96fb\u6e90\u3068 MCCB \u30d5\u30a3\u30fc\u30c0\u30fc\u306e\u5354\u8abf\u306f\u4f9d\u7136\u3068\u3057\u3066\u30b4\u30fc\u30eb\u30c9 \u30b9\u30bf\u30f3\u30c0\u30fc\u30c9\u3067\u3042\u308a\u3001\u4e0a\u6d41\u306e\u30ab\u30c6\u30b4\u30ea B \u6642\u9593\u9045\u5ef6\u6a5f\u80fd\u3068\u4e0b\u6d41\u306e\u30ab\u30c6\u30b4\u30ea A \u96fb\u6d41\u5236\u9650\u306e\u5229\u70b9\u3092\u6d3b\u7528\u3057\u307e\u3059\u3002<\/strong>\u4e3b\u8981\u306a\u8a2d\u8a08\u539f\u5247\u201c<\/p>\n<hr \/>\n<p><strong>VIOX\u306b\u3064\u3044\u3066<\/strong>: \u30d6\u30ec\u30fc\u30ab\u30fc\u306e\u30ab\u30c6\u30b4\u30ea\u3092\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306b\u5408\u308f\u305b\u3066\u304f\u3060\u3055\u3044\u3002\u6545\u969c\u3092\u300c\u5f85\u3064\u300d\u5fc5\u8981\u304c\u3042\u308b\u5834\u5408\u306f ACB \u3092\u4f7f\u7528\u3057\u3001\u6545\u969c\u3092\u300c\u8fc5\u901f\u306b\u505c\u6b62\u300d\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u5834\u5408\u306f MCCB \u3092\u4f7f\u7528\u3057\u307e\u3059\u3002. <a href=\"https:\/\/test.viox.com\/ja\/\">\u304a\u554f\u3044\u5408\u308f\u305b<\/a> : VIOX Electric \u306f\u3001\u96fb\u6c17\u6a5f\u5668\u306e\u5927\u624b B2B \u30e1\u30fc\u30ab\u30fc\u3067\u3042\u308a\u3001\u30e2\u30fc\u30eb\u30c9 \u30b1\u30fc\u30b9 \u30b5\u30fc\u30ad\u30c3\u30c8 \u30d6\u30ec\u30fc\u30ab\u30fc (MCCB)\u3001\u30a8\u30a2 \u30b5\u30fc\u30ad\u30c3\u30c8 \u30d6\u30ec\u30fc\u30ab\u30fc (ACB)\u3001\u304a\u3088\u3073\u7523\u696d\u7528\u304a\u3088\u3073\u5546\u696d\u7528\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u5411\u3051\u306e\u5305\u62ec\u7684\u306a\u4fdd\u8b77\u30bd\u30ea\u30e5\u30fc\u30b7\u30e7\u30f3\u3092\u5c02\u9580\u3068\u3057\u3066\u3044\u307e\u3059\u3002\u5f53\u793e\u306e\u30a8\u30f3\u30b8\u30cb\u30a2\u30ea\u30f3\u30b0 \u30c1\u30fc\u30e0\u306f\u3001\u8907\u96d1\u306a\u5354\u8abf\u8abf\u67fb\u3068\u30b7\u30b9\u30c6\u30e0\u8a2d\u8a08\u306e\u6700\u9069\u5316\u306b\u95a2\u3059\u308b\u6280\u8853\u30b5\u30dd\u30fc\u30c8\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002.<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>MCCB electronic trip unit in industrial panel showing 400A rating and current display &#8211; VIOX Electric Direct Answer Molded Case Circuit Breakers (MCCBs) can provide short-time delay protection without a rated short-time withstand current (Icw) because they belong to IEC 60947-2 Category A, where selectivity is achieved through current-limiting technology rather than intentional time delays. Unlike Category B Air Circuit Breakers (ACBs) that &#8220;wait out&#8221; fault currents using high Icw ratings, MCCBs use electromagnetic contact repulsion and ultra-fast arc interruption to limit fault energy\u2014protecting themselves while still coordinating with downstream devices through their inherent short-delay characteristics (typically 10-12\u00d7 In) below the instantaneous trip threshold. 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