{"id":20745,"date":"2025-12-12T09:09:30","date_gmt":"2025-12-12T01:09:30","guid":{"rendered":"https:\/\/viox.com\/?p=20745"},"modified":"2025-12-12T09:09:32","modified_gmt":"2025-12-12T01:09:32","slug":"mcb-ambient-temperature-ratings-and-derating-factors","status":"publish","type":"post","link":"https:\/\/test.viox.com\/ja\/mcb-ambient-temperature-ratings-and-derating-factors\/","title":{"rendered":"MCB\u306e\u5468\u56f2\u6e29\u5ea6\u5b9a\u683c\u3068\u30c7\u30a3\u30ec\u30fc\u30c6\u30a3\u30f3\u30b0\u4fc2\u6570"},"content":{"rendered":"<div class=\"product-intro\">\n<h2>\u306f\u3058\u3081\u306b<\/h2>\n<p>\u9078\u629e\u3059\u308b\u969b\u306f <a href=\"https:\/\/test.viox.com\/ja\/mcb\/\">\u5c0f\u578b\u56de\u8def\u906e\u65ad\u5668 (MCB)<\/a> \u96fb\u6c17\u8a2d\u5099\u306b\u304a\u3044\u3066\u3001\u307b\u3068\u3093\u3069\u306e\u30a8\u30f3\u30b8\u30cb\u30a2\u306f\u5b9a\u683c\u96fb\u6d41\u306b\u6ce8\u76ee\u3057\u307e\u3059\u304c\u3001\u6027\u80fd\u306b\u5927\u304d\u306a\u5f71\u97ff\u3092\u4e0e\u3048\u308b\u53ef\u80fd\u6027\u306e\u3042\u308b\u91cd\u8981\u306a\u5909\u6570\u304c\u3042\u308a\u307e\u3059\u3002\u305d\u308c\u306f\u5468\u56f2\u6e29\u5ea6\u3067\u3059\u300232A\u5b9a\u683c\u306eMCB\u304c\u3001\u3059\u3079\u3066\u306e\u74b0\u5883\u306732A\u3092\u5b89\u5168\u306b\u6d41\u305b\u308b\u3068\u306f\u9650\u308a\u307e\u305b\u3093\u3002\u5b9f\u969b\u3001\u9ad8\u6e29\u74b0\u5883\u4e0b\u3067\u306f\u3001\u540c\u3058MCB\u304c\u308f\u305a\u304b28A\u4ee5\u4e0b\u3067\u30c8\u30ea\u30c3\u30d7\u3057\u3001\u4e88\u671f\u305b\u306c\u30b7\u30e3\u30c3\u30c8\u30c0\u30a6\u30f3\u3084\u30b7\u30b9\u30c6\u30e0\u969c\u5bb3\u306b\u3064\u306a\u304c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002.<\/p>\n<p>MCB\u306e\u5468\u56f2\u6e29\u5ea6\u5b9a\u683c\u3068\u30c7\u30a3\u30ec\u30fc\u30c6\u30a3\u30f3\u30b0\u4fc2\u6570\u3092\u7406\u89e3\u3059\u308b\u3053\u3068\u306f\u3001\u591a\u69d8\u306a\u52d5\u4f5c\u6761\u4ef6\u4e0b\u3067\u4fe1\u983c\u6027\u306e\u9ad8\u3044\u4fdd\u8b77\u3092\u78ba\u4fdd\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u96fb\u6c17\u6280\u8853\u8005\u306b\u3068\u3063\u3066\u4e0d\u53ef\u6b20\u3067\u3059\u3002\u7802\u6f20\u6c17\u5019\u306e\u5236\u5fa1\u76e4\u3092\u8a2d\u8a08\u3059\u308b\u5834\u5408\u3067\u3082\u3001\u5bc6\u9589\u3055\u308c\u305f\u6a5f\u68b0\u30ad\u30e3\u30d3\u30cd\u30c3\u30c8\u306e\u30d6\u30ec\u30fc\u30ab\u30fc\u3092\u6307\u5b9a\u3059\u308b\u5834\u5408\u3067\u3082\u3001\u8aa4\u30c8\u30ea\u30c3\u30d7\u306e\u554f\u984c\u3092\u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0\u3059\u308b\u5834\u5408\u3067\u3082\u3001\u6e29\u5ea6\u306b\u95a2\u3059\u308b\u8003\u616e\u4e8b\u9805\u306f\u91cd\u8981\u306a\u5f79\u5272\u3092\u679c\u305f\u3057\u307e\u3059\u3002.<\/p>\n<p>\u3053\u306e\u5305\u62ec\u7684\u306a\u30ac\u30a4\u30c9\u3067\u306f\u3001\u5468\u56f2\u6e29\u5ea6\u304cMCB\u306e\u6027\u80fd\u306b\u3069\u306e\u3088\u3046\u306b\u5f71\u97ff\u3059\u308b\u304b\u3001\u30c7\u30a3\u30ec\u30fc\u30c6\u30a3\u30f3\u30b0\u8a08\u7b97\u306e\u65b9\u6cd5\u3092\u8aac\u660e\u3057\u3001\u5b9f\u969b\u306e\u8a2d\u7f6e\u306b\u95a2\u3059\u308b\u5b9f\u8df5\u7684\u306a\u30ac\u30a4\u30c0\u30f3\u30b9\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002\u6700\u5f8c\u307e\u3067\u8aad\u3081\u3070\u3001\u3055\u307e\u3056\u307e\u306a\u71b1\u74b0\u5883\u3067MCB\u3092\u9069\u5207\u306b\u9078\u629e\u304a\u3088\u3073\u9069\u7528\u3059\u308b\u65b9\u6cd5\u3092\u7406\u89e3\u3057\u3001\u5b89\u5168\u6027\u3068\u52d5\u4f5c\u306e\u4fe1\u983c\u6027\u306e\u4e21\u65b9\u3092\u78ba\u4fdd\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002.<\/p>\n<h2>MCB\u306e\u6e29\u5ea6\u5b9a\u683c\u306e\u7406\u89e3<\/h2>\n<h3>\u6a19\u6e96\u57fa\u6e96\u6e29\u5ea6<\/h3>\n<p>\u3059\u3079\u3066\u306eMCB\u306f\u3001\u7279\u5b9a\u306e\u57fa\u6e96\u5468\u56f2\u6e29\u5ea6\u3067\u6821\u6b63\u304a\u3088\u3073\u30c6\u30b9\u30c8\u3055\u308c\u3066\u304a\u308a\u3001\u3053\u308c\u304c\u516c\u79f0\u96fb\u6d41\u5b9a\u683c\u306e\u57fa\u6e96\u3068\u306a\u308a\u307e\u3059\u3002 <a href=\"https:\/\/test.viox.com\/ja\/iec-60898-1-vs-iec-60947-2\/\">IEC 60898-1<\/a>\u5bb6\u5ead\u7528\u304a\u3088\u3073\u985e\u4f3c\u306e\u8a2d\u5099\u7528\u306eMCB\u3092\u898f\u5b9a\u3059\u308b\u56fd\u969b\u898f\u683c\u3067\u3042\u308b\u2014\u306b\u3088\u308b\u3068\u3001\u3053\u306e\u57fa\u6e96\u6e29\u5ea6\u306f <strong>30\u00b0C (86\u00b0F)<\/strong>. \u3067\u3059\u3002\u3053\u306e\u6b63\u78ba\u306a\u6e29\u5ea6\u3067\u3001MCB\u306f\u9298\u677f\u306e\u5b9a\u683c\u3069\u304a\u308a\u306b\u52d5\u4f5c\u3057\u307e\u3059\u3002.<\/p>\n<p>IEC 60947-2\u3067\u898f\u5b9a\u3055\u308c\u3066\u3044\u308b\u30e2\u30fc\u30eb\u30c9\u30b1\u30fc\u30b9\u56de\u8def\u906e\u65ad\u5668\uff08MCCB\uff09\u306a\u3069\u3001\u3088\u308a\u5805\u7262\u306a\u56de\u8def\u906e\u65ad\u5668\u3092\u5fc5\u8981\u3068\u3059\u308b\u7523\u696d\u7528\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u5834\u5408\u3001\u6a19\u6e96\u57fa\u6e96\u6e29\u5ea6\u306f\u901a\u5e38 <strong>17.5V \u2013 22.0V<\/strong>. \u3067\u3059\u3002\u3053\u306e\u3088\u308a\u9ad8\u3044\u57fa\u6e96\u306f\u3001\u7523\u696d\u74b0\u5883\u3067\u4e00\u822c\u7684\u306a\u3001\u3088\u308a\u53b3\u3057\u3044\u71b1\u74b0\u5883\u3092\u53cd\u6620\u3057\u3066\u3044\u307e\u3059\u3002.<\/p>\n<h3>MCB\u306e\u5b9a\u683c\u65b9\u6cd5<\/h3>\n<p>MCB\u306b\u8a18\u8f09\u3055\u308c\u3066\u3044\u308b\u5b9a\u683c\u96fb\u6d41\uff08In\uff09\u306f\u3001\u57fa\u6e96\u6e29\u5ea6\u3067\u30c8\u30ea\u30c3\u30d7\u3059\u308b\u3053\u3068\u306a\u304f\u3001\u30c7\u30d0\u30a4\u30b9\u304c\u7d99\u7d9a\u7684\u306b\u6d41\u3059\u3053\u3068\u304c\u3067\u304d\u308b\u6700\u5927\u9023\u7d9a\u96fb\u6d41\u3092\u8868\u3057\u307e\u3059\u3002\u3053\u306e\u5b9a\u683c\u306f\u3001MCB\u306e\u71b1\u30c8\u30ea\u30c3\u30d7\u8981\u7d20\uff08\u901a\u5e38\u306f\u30d0\u30a4\u30e1\u30bf\u30eb\u30b9\u30c8\u30ea\u30c3\u30d7\uff09\u304c\u3001\u7279\u5b9a\u306e\u904e\u96fb\u6d41\u95be\u5024\u3067\u66f2\u304c\u3063\u3066\u30c8\u30ea\u30c3\u30d7\u6a5f\u69cb\u3092\u4f5c\u52d5\u3055\u305b\u308b\u3088\u3046\u306b\u6821\u6b63\u3055\u308c\u308b\u53b3\u5bc6\u306a\u30c6\u30b9\u30c8\u3092\u901a\u3058\u3066\u6c7a\u5b9a\u3055\u308c\u307e\u3059\u3002.<\/p>\n<p>\u30d0\u30a4\u30e1\u30bf\u30eb\u30b9\u30c8\u30ea\u30c3\u30d7\u306f\u3001MCB\u306e\u904e\u8ca0\u8377\u4fdd\u8b77\u306e\u4e2d\u6838\u3067\u3059\u3002\u3053\u308c\u306f\u3001\u71b1\u81a8\u5f35\u4fc2\u6570\u304c\u7570\u306a\u308b2\u3064\u306e\u7570\u306a\u308b\u91d1\u5c5e\u3092\u63a5\u5408\u3057\u305f\u3082\u306e\u3067\u69cb\u6210\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u96fb\u6d41\u304c\u30b9\u30c8\u30ea\u30c3\u30d7\u3092\u6d41\u308c\u308b\u3068\u3001\u71b1\u304c\u767a\u751f\u3057\u307e\u3059\u3002\u6e29\u5ea6\u304c\u4e0a\u6607\u3059\u308b\u3068\u3001\u91d1\u5c5e\u306f\u7570\u306a\u308b\u901f\u5ea6\u3067\u81a8\u5f35\u3057\u3001\u30b9\u30c8\u30ea\u30c3\u30d7\u304c\u66f2\u304c\u308a\u307e\u3059\u3002\u5341\u5206\u306b\u66f2\u304c\u308b\u3068\u3001\u30c8\u30ea\u30c3\u30d7\u6a5f\u69cb\u304c\u4f5c\u52d5\u3057\u3001\u56de\u8def\u304c\u906e\u65ad\u3055\u308c\u307e\u3059\u3002.<\/p>\n<p>\u3053\u306e\u6d17\u7df4\u3055\u308c\u305f\u71b1\u6a5f\u68b0\u30b7\u30b9\u30c6\u30e0\u306f\u3001\u6821\u6b63\u3055\u308c\u305f\u57fa\u6e96\u6e29\u5ea6\u3067\u6b63\u78ba\u306b\u52d5\u4f5c\u3057\u307e\u3059\u3002\u305f\u3060\u3057\u3001MCB\u3092\u53d6\u308a\u5dfb\u304f\u5468\u56f2\u6e29\u5ea6\u306b\u3082\u672c\u8cea\u7684\u306b\u654f\u611f\u3067\u3042\u308a\u3001\u30c7\u30a3\u30ec\u30fc\u30c6\u30a3\u30f3\u30b0\u304c\u91cd\u8981\u306b\u306a\u308a\u307e\u3059\u3002.<\/p>\n<h3>\u6e29\u5ea6\u7bc4\u56f2\u306e\u5236\u9650<\/h3>\n<p>MCB\u306f\u901a\u5e38\u3001-20\u00b0C\u301c+70\u00b0C\u306e\u7bc4\u56f2\u5185\u3067\u52d5\u4f5c\u3059\u308b\u3088\u3046\u306b\u5b9a\u683c\u3055\u308c\u3066\u3044\u307e\u3059\u304c\u3001\u5468\u56f2\u6e29\u5ea6\u304c\u57fa\u6e96\u70b9\u3092\u8d85\u3048\u3066\u4e0a\u6607\u3059\u308b\u3068\u3001\u5b9a\u683c\u96fb\u6d41\u3092\u6d41\u3059\u80fd\u529b\u306f\u5927\u5e45\u306b\u4f4e\u4e0b\u3057\u307e\u3059\u3002\u9006\u306b\u3001\u57fa\u6e96\u6e29\u5ea6\u3092\u4e0b\u56de\u308b\u4f4e\u6e29\u74b0\u5883\u3067\u306f\u3001MCB\u306f\u30c8\u30ea\u30c3\u30d7\u3059\u308b\u524d\u306b\u308f\u305a\u304b\u306b\u9ad8\u3044\u96fb\u6d41\u3092\u6d41\u3059\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u304c\u3001\u63a5\u7d9a\u3055\u308c\u3066\u3044\u308b\u30b1\u30fc\u30d6\u30eb\u3084\u6a5f\u5668\u306b\u306f\u72ec\u81ea\u306e\u6e29\u5ea6\u5236\u9650\u304c\u3042\u308b\u305f\u3081\u3001\u3053\u308c\u306f\u8a2d\u8a08\u4e0a\u306e\u8003\u616e\u4e8b\u9805\u306b\u306a\u308b\u3053\u3068\u306f\u307b\u3068\u3093\u3069\u3042\u308a\u307e\u305b\u3093\u3002.<\/p>\n<figure style=\"margin: 20px 0; text-align: center;\"><img decoding=\"async\" style=\"max-width: 100%; height: auto;\" src=\"https:\/\/img.viox.com\/technical-illustration-showing-mcb-temperature-rating-concept-with-cross-section-view-of-bimetallic-strip-mechanism-30c-reference-temperature-indicator.webp\" alt=\"Technical illustration showing MCB temperature rating concept with cross-section view of bimetallic strip mechanism, 30\u00b0C reference temperature indicator, and VIOX branding\" \/><figcaption style=\"font-style: italic; font-size: 0.9em; color: #666; margin-top: 8px;\">\u30d0\u30a4\u30e1\u30bf\u30eb\u30b9\u30c8\u30ea\u30c3\u30d7\u6a5f\u69cb\u306e\u65ad\u9762\u56f3\u306830\u00b0C\u306e\u57fa\u6e96\u6e29\u5ea6\u30a4\u30f3\u30b8\u30b1\u30fc\u30bf\u30fc\u3092\u5099\u3048\u305fMCB\u6e29\u5ea6\u5b9a\u683c\u306e\u6982\u5ff5\u3092\u793a\u3059\u6280\u8853\u56f3<\/figcaption><\/figure>\n<h2>\u5468\u56f2\u6e29\u5ea6\u304cMCB\u306e\u6027\u80fd\u306b\u4e0e\u3048\u308b\u5f71\u97ff<\/h2>\n<h3>\u71b1\u30c8\u30ea\u30c3\u30d7\u306e\u7269\u7406\u5b66<\/h3>\n<p>\u5468\u56f2\u6e29\u5ea6\u3068MCB\u306e\u6027\u80fd\u306e\u95a2\u4fc2\u306f\u3001\u57fa\u672c\u7684\u306a\u71b1\u7269\u7406\u5b66\u306b\u6839\u3056\u3057\u3066\u3044\u307e\u3059\u3002MCB\u5185\u90e8\u306e\u30d0\u30a4\u30e1\u30bf\u30eb\u30b9\u30c8\u30ea\u30c3\u30d7\u306f\u3001\u30c8\u30ea\u30c3\u30d7\u3059\u308b\u305f\u3081\u306b\u7279\u5b9a\u306e\u6e29\u5ea6\u306b\u9054\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u306e\u6e29\u5ea6\u306f\u3001\u30b9\u30c8\u30ea\u30c3\u30d7\u3092\u6d41\u308c\u308b\u96fb\u6d41\u306b\u3088\u3063\u3066\u751f\u6210\u3055\u308c\u308b\u71b1\uff08I\u00b2R\u52a0\u71b1\uff09\u3068\u3001\u5468\u56f2\u74b0\u5883\u304b\u3089\u306e\u71b1\uff08\u5468\u56f2\u6e29\u5ea6\uff09\u306e2\u3064\u306e\u71b1\u6e90\u306b\u3088\u3063\u3066\u9054\u6210\u3055\u308c\u307e\u3059\u3002.<\/p>\n<p>\u5468\u56f2\u6e29\u5ea6\u304c\u4e0a\u6607\u3059\u308b\u3068\u3001\u30d0\u30a4\u30e1\u30bf\u30eb\u30b9\u30c8\u30ea\u30c3\u30d7\u306f\u3088\u308a\u9ad8\u3044\u57fa\u6e96\u6e29\u5ea6\u304b\u3089\u958b\u59cb\u3057\u307e\u3059\u3002\u3057\u305f\u304c\u3063\u3066\u3001\u30c8\u30ea\u30c3\u30d7\u30dd\u30a4\u30f3\u30c8\u306b\u5230\u9054\u3059\u308b\u305f\u3081\u306b\u3001\u96fb\u6d41\u306e\u6d41\u308c\u304b\u3089\u306e\u8ffd\u52a0\u306e\u52a0\u71b1\u306f\u5c11\u306a\u304f\u3066\u6e08\u307f\u307e\u3059\u3002\u5b9f\u969b\u306b\u306f\u3001\u3053\u308c\u306fMCB\u304c\u5b9a\u683c\u5024\u3088\u308a\u3082\u4f4e\u3044\u96fb\u6d41\u3067\u30c8\u30ea\u30c3\u30d7\u3059\u308b\u3053\u3068\u3092\u610f\u5473\u3057\u307e\u3059\u3002.<\/p>\n<p>30\u00b0C\u306732A\u5b9a\u683c\u306eMCB\u3092\u8003\u3048\u3066\u307f\u307e\u3057\u3087\u3046\u3002\u540c\u3058MCB\u304c50\u00b0C\u306e\u74b0\u5883\u3067\u52d5\u4f5c\u3059\u308b\u5834\u5408\u3001\u30d0\u30a4\u30e1\u30bf\u30eb\u30b9\u30c8\u30ea\u30c3\u30d7\u306f\u6821\u6b63\u57fa\u6e96\u3088\u308a\u308220\u00b0C\u9ad8\u3044\u6e29\u5ea6\u304b\u3089\u958b\u59cb\u3057\u307e\u3059\u3002\u30c8\u30ea\u30c3\u30d7\u6e29\u5ea6\u306b\u9054\u3059\u308b\u306b\u306f\u3001\u96fb\u6d41\u306b\u3088\u308b\u52a0\u71b1\u304c\u5c11\u306a\u304f\u3066\u6e08\u307f\u307e\u3059\u3002\u304a\u305d\u3089\u304f\u3001\u5b9a\u683c\u306e32A\u3067\u306f\u306a\u304f\u3001\u308f\u305a\u304b29A\u307e\u305f\u306f30A\u3067\u30c8\u30ea\u30c3\u30d7\u3057\u307e\u3059\u3002.<\/p>\n<h3>\u96fb\u6d41\u5bb9\u91cf\u306e\u524a\u6e1b<\/h3>\n<p>\u4e00\u822c\u7684\u306a\u30eb\u30fc\u30eb\u3068\u3057\u3066\u3001\u71b1\u78c1\u6c17MCB\u306e\u5834\u5408\u3001\u96fb\u6d41\u5bb9\u91cf\u306f\u7d04 <strong>10\u00b0C\u4e0a\u6607\u3059\u308b\u3054\u3068\u306b6\u301c10\uff05<\/strong> \u57fa\u6e96\u6e29\u5ea6\u3092\u8d85\u3048\u307e\u3059\u3002\u3053\u308c\u306f\u3001\u3059\u3079\u3066\u306e\u6e29\u5ea6\u7bc4\u56f2\u3067\u7dda\u5f62\u95a2\u4fc2\u3067\u306f\u306a\u304f\u3001\u30e1\u30fc\u30ab\u30fc\u3084\u88fd\u54c1\u30b7\u30ea\u30fc\u30ba\u306b\u3088\u3063\u3066\u7570\u306a\u308a\u307e\u3059\u304c\u3001\u6709\u7528\u306a\u63a8\u5b9a\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002.<\/p>\n<p>\u4f8b\u3048\u3070\u3001\u3053\u3046\u3060\uff1a<\/p>\n<ul>\n<li>40\u00b0C\uff0830\u00b0C\u306e\u57fa\u6e96\u3088\u308a10\u00b0C\u9ad8\u3044\uff09\u306eMCB\u306f\u3001\u5b9a\u683c\u5bb9\u91cf\u306e\u7d0494\uff05\u3067\u52d5\u4f5c\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059<\/li>\n<li>50\u00b0C\uff08\u57fa\u6e96\u3088\u308a20\u00b0C\u9ad8\u3044\uff09\u3067\u306f\u3001\u5bb9\u91cf\u306f\u7d0488\u301c90\uff05\u306b\u4f4e\u4e0b\u3057\u307e\u3059<\/li>\n<li>60\u00b0C\uff08\u57fa\u6e96\u3088\u308a30\u00b0C\u9ad8\u3044\uff09\u3067\u306f\u3001\u5bb9\u91cf\u304c80\u301c85\uff05\u306b\u4f4e\u4e0b\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059<\/li>\n<\/ul>\n<h3>\u4e0d\u9069\u5207\u306a\u30c7\u30a3\u30ec\u30fc\u30c6\u30a3\u30f3\u30b0\u306b\u3088\u308b\u6545\u969c\u30e2\u30fc\u30c9<\/h3>\n<p>MCB\u304c\u9069\u5207\u306a\u30c7\u30a3\u30ec\u30fc\u30c6\u30a3\u30f3\u30b0\u3092\u8003\u616e\u305b\u305a\u306b\u9ad8\u3044\u5468\u56f2\u6e29\u5ea6\u3067\u52d5\u4f5c\u3059\u308b\u5834\u5408\u30012\u3064\u306e\u4e3b\u8981\u306a\u6545\u969c\u30e2\u30fc\u30c9\u304c\u767a\u751f\u3057\u307e\u3059\u3002<\/p>\n<p><strong>\u8ff7\u60d1\u306a\u30c8\u30ea\u30c3\u30d7<\/strong>\uff1aMCB\u306f\u3001\u901a\u5e38\u306e\u52d5\u4f5c\u4e2d\u306b\u30c8\u30ea\u30c3\u30d7\u3057\u307e\u3059\u3002\u3053\u308c\u306f\u3001\u5b9f\u969b\u306e\u96fb\u6d41\u304c\u9298\u677f\u306e\u5b9a\u683c\u5185\u306b\u3042\u308b\u306b\u3082\u304b\u304b\u308f\u3089\u305a\u3001\u6e29\u5ea6\u8abf\u6574\u3055\u308c\u305f\u5bb9\u91cf\u3092\u8d85\u3048\u308b\u305f\u3081\u3067\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u4e88\u671f\u3057\u306a\u3044\u30c0\u30a6\u30f3\u30bf\u30a4\u30e0\u3001\u751f\u7523\u6027\u306e\u4f4e\u4e0b\u3001\u304a\u3088\u3073\u660e\u3089\u304b\u306a\u904e\u8ca0\u8377\u304c\u898b\u3089\u308c\u306a\u3044\u30aa\u30da\u30ec\u30fc\u30bf\u30fc\u306e\u4e0d\u6e80\u306b\u3064\u306a\u304c\u308a\u307e\u3059\u3002.<\/p>\n<p><strong>\u65e9\u671f\u52a3\u5316<\/strong>\uff1aMCB\u304c\u9ad8\u6e29\u74b0\u5883\u3067\u6e29\u5ea6\u30c7\u30a3\u30ec\u30fc\u30c6\u30a3\u30f3\u30b0\u3055\u308c\u305f\u5236\u9650\u8fd1\u304f\u3067\u4e00\u8cab\u3057\u3066\u52d5\u4f5c\u3057\u3066\u3044\u308b\u5834\u5408\u3001\u5185\u90e8\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306f\u71b1\u30b9\u30c8\u30ec\u30b9\u306e\u52a0\u901f\u3092\u7d4c\u9a13\u3057\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u6642\u9593\u306e\u7d4c\u904e\u3068\u3068\u3082\u306b\u30d0\u30a4\u30e1\u30bf\u30eb\u30b9\u30c8\u30ea\u30c3\u30d7\u306e\u6821\u6b63\u304c\u4f4e\u4e0b\u3057\u3001\u30c7\u30d0\u30a4\u30b9\u306e\u8010\u7528\u5e74\u6570\u304c\u77ed\u7e2e\u3055\u308c\u3001\u4fdd\u8b77\u306e\u4fe1\u983c\u6027\u304c\u640d\u306a\u308f\u308c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002.<\/p>\n<p>\u3069\u3061\u3089\u306e\u30b7\u30ca\u30ea\u30aa\u3082\u3001MCB\u306e\u57fa\u672c\u7684\u306a\u76ee\u7684\u3067\u3042\u308b\u3001\u4fe1\u983c\u6027\u304c\u9ad8\u304f\u4e88\u6e2c\u53ef\u80fd\u306a\u56de\u8def\u4fdd\u8b77\u3092\u640d\u306a\u3044\u307e\u3059\u3002.<\/p>\n<figure style=\"margin: 20px 0; text-align: center;\"><img decoding=\"async\" style=\"max-width: 100%; height: auto;\" src=\"https:\/\/img.viox.com\/professional-graph-showing-mcb-temperature-derating-curve-with-declining-current-capacity-from-30c-to-70c-ambient-temperature.webp\" alt=\"Professional graph showing MCB temperature derating curve with declining current capacity from 30\u00b0C to 70\u00b0C ambient temperature, featuring VIOX logo\" \/><figcaption style=\"font-style: italic; font-size: 0.9em; color: #666; margin-top: 8px;\">30\u00b0C\u304b\u308970\u00b0C\u306e\u5468\u56f2\u6e29\u5ea6\u307e\u3067\u306e\u96fb\u6d41\u5bb9\u91cf\u306e\u4f4e\u4e0b\u3092\u793a\u3059MCB\u6e29\u5ea6\u30c7\u30a3\u30ec\u30fc\u30c6\u30a3\u30f3\u30b0\u66f2\u7dda\u3092\u793a\u3059\u30d7\u30ed\u30d5\u30a7\u30c3\u30b7\u30e7\u30ca\u30eb\u30b0\u30e9\u30d5\u3001VIOX\u30ed\u30b4\u4ed8\u304d<\/figcaption><\/figure>\n<h2>\u30c7\u30a3\u30ec\u30fc\u30c6\u30a3\u30f3\u30b0\u4fc2\u6570\u306e\u8aac\u660e<\/h2>\n<h3>\u30c7\u30a3\u30ec\u30fc\u30c6\u30a3\u30f3\u30b0\u4fc2\u6570\u3068\u306f\uff1f<\/h3>\n<p>\u30c7\u30a3\u30ec\u30fc\u30c6\u30a3\u30f3\u30b0\u4fc2\u6570\uff08\u6e29\u5ea6\u88dc\u6b63\u4fc2\u6570\u307e\u305f\u306f\u5468\u56f2\u6e29\u5ea6\u88dc\u6b63\u4fc2\u6570\u3068\u3082\u547c\u3070\u308c\u307e\u3059\uff09\u306f\u3001\u7279\u5b9a\u306e\u5468\u56f2\u6e29\u5ea6\u3067\u306e\u6709\u52b9\u306a\u96fb\u6d41\u5bb9\u91cf\u3092\u6c7a\u5b9a\u3059\u308b\u305f\u3081\u306b\u3001MCB\u306e\u516c\u79f0\u5b9a\u683c\u306b\u9069\u7528\u3055\u308c\u308b\u4e57\u6570\u3067\u3059\u3002\u3053\u306e\u4fc2\u6570\u306f\u3001\u57fa\u6e96\u6e29\u5ea6\u4ee5\u4e0a\u306e\u6e29\u5ea6\u3067\u306f\u5e38\u306b1.0\u4ee5\u4e0b\u3067\u3059\u3002.<\/p>\n<p>\u6570\u5b66\u7684\u95a2\u4fc2\u306f\u7c21\u5358\u3067\u3059\u3002<\/p>\n<p><strong>\u6709\u52b9\u96fb\u6d41\u5bb9\u91cf = \u5b9a\u683c\u96fb\u6d41 \u00d7 \u30c7\u30a3\u30ec\u30fc\u30c6\u30a3\u30f3\u30b0\u4fc2\u6570<\/strong><\/p>\n<p>\u305f\u3068\u3048\u3070\u300125A MCB\u306e50\u00b0C\u3067\u306e\u30c7\u30a3\u30ec\u30fc\u30c6\u30a3\u30f3\u30b0\u4fc2\u6570\u304c0.88\u306e\u5834\u5408\uff1a<\/p>\n<ul>\n<li>\u6709\u52b9\u5bb9\u91cf = 25A \u00d7 0.88 = 22A<\/li>\n<\/ul>\n<p>\u3053\u308c\u306f\u300150\u00b0C\u306e\u74b0\u5883\u3067\u306f\u3001\u8aa4\u30c8\u30ea\u30c3\u30d7\u306a\u3057\u3067\u4fe1\u983c\u6027\u306e\u9ad8\u3044\u52d5\u4f5c\u3092\u4fdd\u8a3c\u3059\u308b\u305f\u3081\u306b\u3001MCB\u309222A\u3092\u8d85\u3048\u3066\u8ca0\u8377\u3092\u304b\u3051\u308b\u3079\u304d\u3067\u306f\u306a\u3044\u3053\u3068\u3092\u610f\u5473\u3057\u307e\u3059\u3002.<\/p>\n<h3>\u30c7\u30a3\u30ec\u30fc\u30c6\u30a3\u30f3\u30b0\u4fc2\u6570\u306e\u6c7a\u5b9a\u65b9\u6cd5<\/h3>\n<p>\u30c7\u30a3\u30ec\u30fc\u30c6\u30a3\u30f3\u30b0\u4fc2\u6570\u306f\u7406\u8ad6\u7684\u306a\u8a08\u7b97\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u30e1\u30fc\u30ab\u30fc\u306b\u3088\u308b\u5e83\u7bc4\u306a\u30c6\u30b9\u30c8\u3092\u901a\u3058\u3066\u7d4c\u9a13\u7684\u306b\u5c0e\u304d\u51fa\u3055\u308c\u307e\u3059\u3002\u5404MCB\u88fd\u54c1\u30b7\u30ea\u30fc\u30ba\u306f\u3001\u5b9f\u969b\u306e\u30c8\u30ea\u30c3\u30d7\u7279\u6027\u3092\u6e2c\u5b9a\u3059\u308b\u305f\u3081\u306b\u3001\u3055\u307e\u3056\u307e\u306a\u5468\u56f2\u6e29\u5ea6\u3067\u71b1\u30c6\u30b9\u30c8\u3092\u53d7\u3051\u307e\u3059\u3002\u7d50\u679c\u306f\u3001\u305d\u306e\u88fd\u54c1\u30e9\u30a4\u30f3\u306b\u56fa\u6709\u306e\u30c7\u30a3\u30ec\u30fc\u30c6\u30a3\u30f3\u30b0\u30c6\u30fc\u30d6\u30eb\u307e\u305f\u306f\u66f2\u7dda\u306b\u307e\u3068\u3081\u3089\u308c\u307e\u3059\u3002.<\/p>\n<p>\u3053\u306e\u305f\u3081\u3001\u4e00\u822c\u7684\u306a\u696d\u754c\u306e\u7d4c\u9a13\u5247\u3060\u3051\u306b\u983c\u308b\u306e\u3067\u306f\u306a\u304f\u3001\u30e1\u30fc\u30ab\u30fc\u306e\u6280\u8853\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u3092\u53c2\u7167\u3059\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002MCB\u306e\u8a2d\u8a08\u3001\u5185\u90e8\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306e\u30ec\u30a4\u30a2\u30a6\u30c8\u3001\u304a\u3088\u3073\u71b1\u7ba1\u7406\u6a5f\u80fd\u304c\u7570\u306a\u308b\u3068\u3001\u516c\u79f0\u5b9a\u683c\u304c\u540c\u3058\u30d6\u30ec\u30fc\u30ab\u30fc\u3067\u3082\u3001\u30c7\u30a3\u30ec\u30fc\u30c6\u30a3\u30f3\u30b0\u7279\u6027\u304c\u7570\u306a\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002.<\/p>\n<h3>\u30c7\u30a3\u30ec\u30fc\u30c6\u30a3\u30f3\u30b0\u66f2\u7dda<\/h3>\n<p>\u30e1\u30fc\u30ab\u30fc\u306f\u901a\u5e38\u3001\u30c7\u30a3\u30ec\u30fc\u30c6\u30a3\u30f3\u30b0\u60c5\u5831\u3092\u8868\u5f62\u5f0f\u306e\u30c7\u30fc\u30bf\u3068\u30b0\u30e9\u30d5\u5f62\u5f0f\u306e\u66f2\u7dda\u306e2\u3064\u306e\u5f62\u5f0f\u3067\u63d0\u793a\u3057\u307e\u3059\u3002\u30c7\u30a3\u30ec\u30fc\u30c6\u30a3\u30f3\u30b0\u66f2\u7dda\u306f\u3001X\u8ef8\u306b\u5468\u56f2\u6e29\u5ea6\u3092\u3001Y\u8ef8\u306b\u30c7\u30a3\u30ec\u30fc\u30c6\u30a3\u30f3\u30b0\u4fc2\u6570\u307e\u305f\u306f\u6709\u52b9\u96fb\u6d41\u5bb9\u91cf\u306e\u3044\u305a\u308c\u304b\u3092\u30d7\u30ed\u30c3\u30c8\u3057\u307e\u3059\u3002.<\/p>\n<p>\u3053\u308c\u3089\u306e\u66f2\u7dda\u306f\u3001\u91cd\u8981\u306a\u7279\u6027\u3092\u660e\u3089\u304b\u306b\u3057\u307e\u3059\u3002<\/p>\n<ul>\n<li>\u95a2\u4fc2\u306f\u4e00\u822c\u306b\u975e\u7dda\u5f62\u3067\u3042\u308a\u3001\u9ad8\u6e29\u307b\u3069\u5bb9\u91cf\u306e\u4f4e\u4e0b\u304c\u6025\u5cfb\u3067\u3059<\/li>\n<li>\u4e00\u90e8\u306eMCB\u8a2d\u8a08\u3067\u306f\u3001\u30c7\u30a3\u30ec\u30fc\u30c6\u30a3\u30f3\u30b0\u304c\u3088\u308a\u7de9\u3084\u304b\u3067\u3059\u304c\u3001\u4ed6\u306e\u8a2d\u8a08\u3067\u306f\u3088\u308a\u6025\u6fc0\u306b\u4f4e\u4e0b\u3057\u307e\u3059<\/li>\n<li>\u66f2\u7dda\u306f\u975e\u5e38\u306b\u9ad8\u3044\u6e29\u5ea6\u3067\u5e73\u5766\u306b\u306a\u308a\u3001MCB\u306e\u7d76\u5bfe\u6700\u5927\u52d5\u4f5c\u5236\u9650\u306b\u8fd1\u3065\u304f\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059<\/li>\n<\/ul>\n<h3>\u5b9f\u7528\u7684\u306a\u8a08\u7b97\u4f8b<\/h3>\n<p><strong>\u4f8b1\uff1a\u57fa\u672c\u7684\u306a\u30c7\u30a3\u30ec\u30fc\u30c6\u30a3\u30f3\u30b0<\/strong><\/p>\n<p>\u5185\u90e8\u5468\u56f2\u6e29\u5ea6\u304c55\u00b0C\u306b\u9054\u3059\u308b\u5236\u5fa1\u76e4\u306bMCB\u3092\u8a2d\u7f6e\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u56de\u8def\u306f30A\u306e\u8ca0\u8377\u306b\u5bfe\u3057\u3066\u7d99\u7d9a\u7684\u306a\u4fdd\u8b77\u304c\u5fc5\u8981\u3067\u3059\u3002\u30e1\u30fc\u30ab\u30fc\u306e\u30c7\u30fc\u30bf\u306b\u3088\u308b\u3068\u300155\u00b0C\u3067\u306e\u30c7\u30a3\u30ec\u30fc\u30c6\u30a3\u30f3\u30b0\u4fc2\u6570\u306f0.85\u3067\u3059\u3002.<\/p>\n<ul>\n<li>\u5fc5\u8981\u306aMCB\u5b9a\u683c = \u8ca0\u8377\u96fb\u6d41 \u00f7 \u30c7\u30a3\u30ec\u30fc\u30c6\u30a3\u30f3\u30b0\u4fc2\u6570<\/li>\n<li>\u5fc5\u8981\u306aMCB\u5b9a\u683c = 30A \u00f7 0.85 = 35.3A<\/li>\n<li><strong>\u6b21\u306e\u6a19\u6e96\u30b5\u30a4\u30ba\u3092\u9078\u629e\u3057\u307e\u3059\uff1a40A MCB<\/strong><\/li>\n<\/ul>\n<p><strong>\u4f8b2\uff1a\u691c\u8a3c\u30a2\u30d7\u30ed\u30fc\u30c1<\/strong><\/p>\n<p>\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306b63A MCB\u3092\u6307\u5b9a\u3057\u307e\u3057\u305f\u3002\u4e88\u60f3\u3055\u308c\u308b\u5468\u56f2\u6e29\u5ea6\u306f60\u00b0C\u3067\u3059\u3002\u30e1\u30fc\u30ab\u30fc\u306e\u8868\u306b\u3088\u308b\u3068\u3001\u3053\u306eMCB\u306f60\u00b0C\u306754A\u3092\u6d41\u3059\u3053\u3068\u304c\u3067\u304d\u307e\u3059\uff08\u30c7\u30a3\u30ec\u30fc\u30c6\u30a3\u30f3\u30b0\u4fc2\u6570\u306f\u7d040.86\uff09\u3002.<\/p>\n<p>\u5b9f\u969b\u306e\u8ca0\u8377\u304c58A\u306e\u5834\u5408\uff1a<\/p>\n<ul>\n<li>58A &gt; 54A (\u6e29\u5ea6\u8abf\u6574\u5f8c\u306e\u5bb9\u91cf)<\/li>\n<li><strong>\u3053\u306e\u7528\u9014\u306b\u306f63A\u306eMCB\u306f\u5bb9\u91cf\u4e0d\u8db3\u3067\u3059\u300280A\u306b\u30a2\u30c3\u30d7\u30b0\u30ec\u30fc\u30c9\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/strong><\/li>\n<\/ul>\n<p><strong>\u4f8b3\uff1a\u9006\u7b97<\/strong><\/p>\n<p>\u65e2\u5b58\u306e\u8a2d\u5099\u3067\u306f32A\u306eMCB\u3092\u4f7f\u7528\u3057\u3066\u3044\u307e\u3059\u3002\u96fb\u6c17\u30a8\u30f3\u30af\u30ed\u30fc\u30b8\u30e3\u5185\u306e\u590f\u5b63\u306e\u6e29\u5ea6\u306f65\u2103\u306b\u9054\u3057\u307e\u3059\u3002\u30e1\u30fc\u30ab\u30fc\u306e65\u2103\u3067\u306e\u30c7\u30a3\u30ec\u30fc\u30c6\u30a3\u30f3\u30b0\u4fc2\u65700.78\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002<\/p>\n<ul>\n<li>\u6709\u52b9\u5bb9\u91cf = 32A \u00d7 0.78 = 25A<\/li>\n<li><strong>\u6700\u5927\u5b89\u5168\u9023\u7d9a\u8ca0\u8377\uff1a25A<\/strong><\/li>\n<\/ul>\n<p>\u3053\u308c\u3089\u306e\u4f8b\u306f\u3001\u6e29\u5ea6\u30c7\u30a3\u30ec\u30fc\u30c6\u30a3\u30f3\u30b0\u304cMCB\u306e\u9078\u629e\u306b\u304a\u3044\u3066\u5f8c\u4ed8\u3051\u3067\u306f\u306a\u304f\u3001\u4e0d\u53ef\u6b20\u306a\u8981\u7d20\u3067\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u7406\u7531\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002.<\/p>\n<figure style=\"margin: 20px 0; text-align: center;\"><img decoding=\"async\" style=\"max-width: 100%; height: auto;\" src=\"https:\/\/img.viox.com\/infographic-demonstrating-mcb-derating-factor-calculation-with-step-by-step-visual-example-showing-32a-mcb-at-50c-with-0-88-factor-equals-28-2a-effective-capacity.webp\" alt=\"Infographic demonstrating MCB derating factor calculation with step-by-step visual example showing 32A MCB at 50\u00b0C with 0.88 factor equals 28.2A effective capacity, VIOX branded\" \/><figcaption style=\"font-style: italic; font-size: 0.9em; color: #666; margin-top: 8px;\">32A\u306eMCB\u304c50\u2103\u30670.88\u306e\u4fc2\u6570\u306728.2A\u306e\u6709\u52b9\u5bb9\u91cf\u306b\u306a\u308b\u3053\u3068\u3092\u6bb5\u968e\u7684\u306a\u8996\u899a\u7684\u306a\u4f8b\u3067\u793a\u3059\u3001MCB\u30c7\u30a3\u30ec\u30fc\u30c6\u30a3\u30f3\u30b0\u4fc2\u6570\u8a08\u7b97\u3092\u793a\u3059\u30a4\u30f3\u30d5\u30a9\u30b0\u30e9\u30d5\u30a3\u30c3\u30af\u3001VIOX\u30d6\u30e9\u30f3\u30c9<\/figcaption><\/figure>\n<h2>\u6a19\u6e96\u30c7\u30a3\u30ec\u30fc\u30c6\u30a3\u30f3\u30b0\u30c6\u30fc\u30d6\u30eb\u3068\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3<\/h2>\n<h3>\u4e00\u822c\u7684\u306a\u30c7\u30a3\u30ec\u30fc\u30c6\u30a3\u30f3\u30b0\u5024<\/h3>\n<p>\u7279\u5b9a\u306e\u30c7\u30a3\u30ec\u30fc\u30c6\u30a3\u30f3\u30b0\u4fc2\u6570\u306f\u30e1\u30fc\u30ab\u30fc\u3084\u88fd\u54c1\u30e9\u30a4\u30f3\u306b\u3088\u3063\u3066\u7570\u306a\u308a\u307e\u3059\u304c\u3001\u696d\u754c\u30c7\u30fc\u30bf\u306f\u4e00\u8cab\u3057\u305f\u30d1\u30bf\u30fc\u30f3\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u300230\u2103\u3067\u6821\u6b63\u3055\u308c\u305f\u71b1\u78c1\u6c17\u5f0fMCB\uff08IEC 60898-1\u306b\u6e96\u62e0\uff09\u306e\u5834\u5408\u3001\u4e00\u822c\u7684\u306a\u30c7\u30a3\u30ec\u30fc\u30c6\u30a3\u30f3\u30b0\u4fc2\u6570\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/p>\n<table style=\"width: 100%; border-collapse: collapse; margin: 20px 0;\" border=\"1\">\n<thead>\n<tr style=\"background-color: #f9f9f9;\">\n<th style=\"padding: 10px; text-align: left;\">\u5468\u56f2\u6e29\u5ea6<\/th>\n<th style=\"padding: 10px; text-align: left;\">\u4e00\u822c\u7684\u306a\u30c7\u30a3\u30ec\u30fc\u30c6\u30a3\u30f3\u30b0\u4fc2\u6570<\/th>\n<th style=\"padding: 10px; text-align: left;\">\u4f8b\uff1a32A MCB\u306e\u6709\u52b9\u5bb9\u91cf<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"padding: 10px;\">30\u2103\uff08\u57fa\u6e96\uff09<\/td>\n<td style=\"padding: 10px;\">1.00<\/td>\n<td style=\"padding: 10px;\">32A<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 10px;\">40\u00b0C<\/td>\n<td style=\"padding: 10px;\">0.94 &#8211; 0.97<\/td>\n<td style=\"padding: 10px;\">30A \u2013 31A<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 10px;\">50\u00b0C<\/td>\n<td style=\"padding: 10px;\">0.88 &#8211; 0.95<\/td>\n<td style=\"padding: 10px;\">28A \u2013 30A<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 10px;\">60\u00b0C<\/td>\n<td style=\"padding: 10px;\">0.76 &#8211; 0.90<\/td>\n<td style=\"padding: 10px;\">24A \u2013 29A<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 10px;\">70\u2103<\/td>\n<td style=\"padding: 10px;\">0.64 &#8211; 0.85<\/td>\n<td style=\"padding: 10px;\">20A \u2013 27A<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>MCB\u306e\u5834\u5408\u3068 <a href=\"https:\/\/test.viox.com\/ja\/mccb\/\">MCCB<\/a> 40\u2103\u3067\u6821\u6b63\u3055\u308c\u305f\uff08IEC 60947-2\u306b\u6e96\u62e0\uff09\u5834\u5408\u3001\u30d9\u30fc\u30b9\u30e9\u30a4\u30f3\u306f\u305d\u308c\u306b\u5fdc\u3058\u3066\u30b7\u30d5\u30c8\u3057\u307e\u3059\u3002<\/p>\n<table style=\"width: 100%; border-collapse: collapse; margin: 20px 0;\" border=\"1\">\n<thead>\n<tr style=\"background-color: #f9f9f9;\">\n<th style=\"padding: 10px; text-align: left;\">\u5468\u56f2\u6e29\u5ea6<\/th>\n<th style=\"padding: 10px; text-align: left;\">\u4e00\u822c\u7684\u306a\u30c7\u30a3\u30ec\u30fc\u30c6\u30a3\u30f3\u30b0\u4fc2\u6570<\/th>\n<th style=\"padding: 10px; text-align: left;\">\u4f8b\uff1a100A MCCB\u306e\u6709\u52b9\u5bb9\u91cf<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"padding: 10px;\">40\u2103\uff08\u57fa\u6e96\uff09<\/td>\n<td style=\"padding: 10px;\">1.00<\/td>\n<td style=\"padding: 10px;\">100A<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 10px;\">50\u00b0C<\/td>\n<td style=\"padding: 10px;\">0.90 &#8211; 0.94<\/td>\n<td style=\"padding: 10px;\">90A \u2013 94A<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 10px;\">60\u00b0C<\/td>\n<td style=\"padding: 10px;\">0.80 &#8211; 0.87<\/td>\n<td style=\"padding: 10px;\">80A \u2013 87A<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 10px;\">70\u2103<\/td>\n<td style=\"padding: 10px;\">0.70 &#8211; 0.80<\/td>\n<td style=\"padding: 10px;\">70A \u2013 80A<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u3053\u308c\u3089\u306e\u7bc4\u56f2\u306f\u3001\u7570\u306a\u308b\u30e1\u30fc\u30ab\u30fc\u306e\u88fd\u54c1\u8a2d\u8a08\u306e\u3070\u3089\u3064\u304d\u3092\u53cd\u6620\u3057\u3066\u3044\u307e\u3059\u3002\u5f37\u5316\u3055\u308c\u305f\u71b1\u7ba1\u7406\u3092\u5099\u3048\u305f\u30d7\u30ec\u30df\u30a2\u30e0MCB\u30b7\u30ea\u30fc\u30ba\u306f\u3001\u9ad8\u6e29\u4e0b\u3067\u3088\u308a\u512a\u308c\u305f\u6027\u80fd\u3092\u793a\u3059\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002.<\/p>\n<h3>\u30e1\u30fc\u30ab\u30fc\u56fa\u6709\u306e\u30c7\u30fc\u30bf<\/h3>\n<p>\u5927\u624b\u30e1\u30fc\u30ab\u30fc\u306f\u3001\u6280\u8853\u30ab\u30bf\u30ed\u30b0\u306b\u8a73\u7d30\u306a\u30c7\u30a3\u30ec\u30fc\u30c6\u30a3\u30f3\u30b0\u60c5\u5831\u3092\u63d0\u4f9b\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p><strong>ABB S200\u30b7\u30ea\u30fc\u30ba\uff0830\u2103\u57fa\u6e96\uff09<\/strong>\uff1a80A MCB\u306e\u5834\u5408\u3001\u3055\u307e\u3056\u307e\u306a\u6e29\u5ea6\u3067\u306e\u6700\u5927\u52d5\u4f5c\u96fb\u6d41\u306f\u300150\u2103\u3067\u7d0477.6A\u300160\u2103\u306775.2A\u300170\u2103\u306772.8A\u3067\u3059\u3002.<\/p>\n<p><strong>Schneider Electric Acti9\u30b7\u30ea\u30fc\u30ba<\/strong>\uff1a40\u2103\u3067\u6821\u6b63\u3055\u308c\u305f160A\u306e\u71b1\u78c1\u6c17\u5f0f\u30d6\u30ec\u30fc\u30ab\u30fc\u306f\u300150\u2103\u3067150A\u300160\u2103\u3067140A\u300170\u2103\u3067130A\u306e\u6709\u52b9\u5bb9\u91cf\u3092\u793a\u3057\u300110\u2103\u523b\u307f\u3067\u7d0410A\u306e\u6e1b\u5c11\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002.<\/p>\n<p><strong>Eaton\u3068Siemens<\/strong>\uff1a\u4e21\u65b9\u306e\u30e1\u30fc\u30ab\u30fc\u306f\u3001\u88fd\u54c1\u56fa\u6709\u306e\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u3092\u53c2\u7167\u3059\u308b\u3053\u3068\u306e\u91cd\u8981\u6027\u3092\u5f37\u8abf\u3057\u3066\u3044\u307e\u3059\u3002\u30c7\u30a3\u30ec\u30fc\u30c6\u30a3\u30f3\u30b0\u7279\u6027\u306f\u3001\u5e83\u7bc4\u306aMCB\u30dd\u30fc\u30c8\u30d5\u30a9\u30ea\u30aa\u5168\u4f53\u3067\u5927\u304d\u304f\u7570\u306a\u308b\u305f\u3081\u3067\u3059\u3002.<\/p>\n<h3>IEC\u898f\u683c\u30ac\u30a4\u30c0\u30f3\u30b9<\/h3>\n<p>IEC 60898-1\u304a\u3088\u3073IEC 60947-2\u306f\u3001\u30c6\u30b9\u30c8\u30d7\u30ed\u30c8\u30b3\u30eb\u3068\u57fa\u6e96\u6e29\u5ea6\u3092\u78ba\u7acb\u3057\u3066\u3044\u307e\u3059\u304c\u3001\u7279\u5b9a\u306e\u30c7\u30a3\u30ec\u30fc\u30c6\u30a3\u30f3\u30b0\u5024\u3092\u7fa9\u52d9\u4ed8\u3051\u3066\u3044\u307e\u305b\u3093\u3002\u4ee3\u308f\u308a\u306b\u3001\u30e1\u30fc\u30ab\u30fc\u306f\u88fd\u54c1\u306e\u578b\u5f0f\u8a66\u9a13\u306b\u57fa\u3065\u3044\u3066\u3053\u306e\u30c7\u30fc\u30bf\u3092\u63d0\u4f9b\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u308c\u3089\u306e\u898f\u683c\u3067\u306f\u3001MCB\u304c\u6307\u5b9a\u3055\u308c\u305f\u6e29\u5ea6\u7bc4\u56f2\u5168\u4f53\u3067\u5b89\u5168\u306b\u52d5\u4f5c\u3059\u308b\u3053\u3068\u304c\u6c42\u3081\u3089\u308c\u3066\u3044\u307e\u3059\u304c\u3001\u6975\u7aef\u306a\u6e29\u5ea6\u3067\u306e\u6027\u80fd\u4f4e\u4e0b\u306f\u4e88\u60f3\u3055\u308c\u3001\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u30a8\u30f3\u30b8\u30cb\u30a2\u30ea\u30f3\u30b0\u3067\u8003\u616e\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002.<\/p>\n<h3>\u3088\u308a\u4fdd\u5b88\u7684\u306a\u4fc2\u6570\u3092\u9069\u7528\u3059\u308b\u5834\u5408<\/h3>\n<p>\u7279\u5b9a\u306e\u30b7\u30ca\u30ea\u30aa\u3067\u306f\u3001\u3088\u308a\u4fdd\u5b88\u7684\u306a\u30c7\u30a3\u30ec\u30fc\u30c6\u30a3\u30f3\u30b0\u3092\u9069\u7528\u3059\u308b\u3053\u3068\u304c\u8ce2\u660e\u3067\u3059\u3002<\/p>\n<ul>\n<li><strong>\u30df\u30c3\u30b7\u30e7\u30f3\u30af\u30ea\u30c6\u30a3\u30ab\u30eb\u306a\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3<\/strong> \u8aa4\u52d5\u4f5c\u30c8\u30ea\u30c3\u30d7\u304c\u91cd\u5927\u306a\u7d50\u679c\u3092\u3082\u305f\u3089\u3059\u5834\u5408<\/li>\n<li><strong>\u6e29\u5ea6\u76e3\u8996\u304c\u4e0d\u5341\u5206\u306a\u8a2d\u5099<\/strong> \u5b9f\u969b\u306e\u5468\u56f2\u6e29\u5ea6\u304c\u8a2d\u8a08\u4e0a\u306e\u4eee\u5b9a\u3092\u8d85\u3048\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b\u5834\u5408<\/li>\n<li><strong>\u8001\u673d\u5316\u3057\u305f\u8a2d\u5099<\/strong> \u9577\u5e74\u306e\u4f7f\u7528\u306b\u3088\u308aMCB\u306e\u6821\u6b63\u304c\u305a\u308c\u3066\u3044\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b\u5834\u5408<\/li>\n<li><strong>\u6e29\u5ea6\u5909\u52d5\u306e\u5927\u304d\u3044\u74b0\u5883<\/strong> \u53cd\u5fa9\u7684\u306a\u71b1\u30b5\u30a4\u30af\u30eb\u3092\u901a\u3058\u3066\u30d0\u30a4\u30e1\u30bf\u30eb\u30b9\u30c8\u30ea\u30c3\u30d7\u306b\u30b9\u30c8\u30ec\u30b9\u3092\u4e0e\u3048\u308b\u5834\u5408<\/li>\n<\/ul>\n<figure style=\"margin: 20px 0; text-align: center;\"><img decoding=\"async\" style=\"max-width: 100%; height: auto;\" src=\"https:\/\/img.viox.com\/reference-table-displaying-mcb-temperature-derating-factors-from-30c-to-70c-with-corresponding-derating-values-and-capacity-examples-for-32a-mcb.webp\" alt=\"Reference table displaying MCB temperature derating factors from 30\u00b0C to 70\u00b0C with corresponding derating values and capacity examples for 32A MCB, VIOX branded\" \/><figcaption style=\"font-style: italic; font-size: 0.9em; color: #666; margin-top: 8px;\">30\u2103\u304b\u308970\u2103\u307e\u3067\u306eMCB\u6e29\u5ea6\u30c7\u30a3\u30ec\u30fc\u30c6\u30a3\u30f3\u30b0\u4fc2\u6570\u3068\u3001\u5bfe\u5fdc\u3059\u308b\u30c7\u30a3\u30ec\u30fc\u30c6\u30a3\u30f3\u30b0\u5024\u3001\u304a\u3088\u307332A MCB\u306e\u5bb9\u91cf\u306e\u4f8b\u3092\u793a\u3059\u53c2\u7167\u30c6\u30fc\u30d6\u30eb\u3001VIOX\u30d6\u30e9\u30f3\u30c9<\/figcaption><\/figure>\n<h2>\u5b9f\u7528\u7684\u306a\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3068\u8a2d\u7f6e\u306b\u95a2\u3059\u308b\u8003\u616e\u4e8b\u9805<\/h2>\n<h3>\u5b9f\u969b\u306e\u8a2d\u7f6e\u306b\u304a\u3051\u308b\u5468\u56f2\u6e29\u5ea6\u306e\u5b9a\u7fa9<\/h3>\n<p>\u3057\u3070\u3057\u3070\u8aa4\u89e3\u3055\u308c\u3066\u3044\u308b\u91cd\u8981\u306a\u70b9\uff1aMCB\u30c7\u30a3\u30ec\u30fc\u30c6\u30a3\u30f3\u30b0\u306e\u76ee\u7684\u3067\u306e\u5468\u56f2\u6e29\u5ea6\u306f <strong>\u306a\u3044<\/strong> \u5ba4\u6e29\u3067\u3059\u3002MCB\u81ea\u4f53\u306e\u3059\u3050\u5468\u56f2\u306e\u7a7a\u6c17\u306e\u6e29\u5ea6\u3067\u3059\u3002\u5bc6\u9589\u3055\u308c\u305f\u8a2d\u7f6e\u3067\u306f\u3001\u3053\u308c\u306f\u4e00\u822c\u7684\u306a\u74b0\u5883\u3088\u308a\u3082\u5927\u5e45\u306b\u9ad8\u304f\u306a\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002.<\/p>\n<p>25\u2103\u306e\u7a7a\u8abf\u3055\u308c\u305f\u90e8\u5c4b\u306b\u8a2d\u7f6e\u3055\u308c\u305f\u5236\u5fa1\u76e4\u306f\u3001\u4ed6\u306e\u6a5f\u5668\u304b\u3089\u306e\u767a\u71b1\u3001\u30a8\u30f3\u30af\u30ed\u30fc\u30b8\u30e3\u3078\u306e\u592a\u967d\u5149\u306e\u7167\u5c04\u3001\u307e\u305f\u306f\u4e0d\u5341\u5206\u306a\u63db\u6c17\u306b\u3088\u308a\u3001\u5185\u90e8\u6e29\u5ea6\u304c45\u2103\u4ee5\u4e0a\u306b\u306a\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002MCB\u304c\u53d6\u308a\u4ed8\u3051\u3089\u308c\u3066\u3044\u308b\u30a8\u30f3\u30af\u30ed\u30fc\u30b8\u30e3\u5185\u306e\u5b9f\u969b\u306e\u6e29\u5ea6\u3092\u5e38\u306b\u6e2c\u5b9a\u307e\u305f\u306f\u8a08\u7b97\u3057\u3066\u304f\u3060\u3055\u3044\u3002.<\/p>\n<h3>\u30a8\u30f3\u30af\u30ed\u30fc\u30b8\u30e3\u306e\u52b9\u679c\u3068\u71b1\u306e\u84c4\u7a4d<\/h3>\n<p>\u96fb\u6c17\u30a8\u30f3\u30af\u30ed\u30fc\u30b8\u30e3\u306f\u3001\u5c40\u6240\u7684\u306a\u30db\u30c3\u30c8\u30be\u30fc\u30f3\u3092\u4f5c\u308a\u51fa\u3057\u307e\u3059\u3002\u71b1\u6e90\u306b\u306f\u4ee5\u4e0b\u304c\u542b\u307e\u308c\u307e\u3059\u3002<\/p>\n<ul>\n<li>\u9023\u7d9a\u7684\u306a\u71b1\u3092\u767a\u751f\u3059\u308b\u96fb\u6e90\u3068\u5909\u5727\u5668<\/li>\n<li>\u30b9\u30a4\u30c3\u30c1\u30f3\u30b0\u640d\u5931\u306e\u3042\u308bVFD\uff08\u53ef\u5909\u5468\u6ce2\u6570\u30c9\u30e9\u30a4\u30d6\uff09<\/li>\n<li><a href=\"https:\/\/test.viox.com\/ja\/ac-contactor\/\">\u63a5\u89e6\u8005<\/a> \u305d\u3057\u3066 <a href=\"https:\/\/test.viox.com\/ja\/timer-relay\/\">\u30ea\u30ec\u30fc<\/a> \u901a\u96fb\u3055\u308c\u305f\u30b3\u30a4\u30eb\u4ed8\u304d<\/li>\n<li>MCB\u81ea\u4f53\u304cI\u00b2R\u640d\u5931\u306b\u5bc4\u4e0e\u3059\u308b<\/li>\n<\/ul>\n<p>\u9069\u5207\u306a\u63db\u6c17\u306e\u306a\u3044\u9ad8\u5bc6\u5ea6\u306b\u8a70\u3081\u8fbc\u307e\u308c\u305f\u30d1\u30cd\u30eb\u3067\u306f\u3001\u5185\u90e8\u6e29\u5ea6\u304c\u5916\u90e8\u5468\u56f2\u6e29\u5ea6\u309220\u301c30\u2103\u8d85\u3048\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u63db\u6c17\u30d5\u30a1\u30f3\u3001\u30d2\u30fc\u30c8\u30b7\u30f3\u30af\u3001\u304a\u3088\u3073\u9069\u5207\u306a\u9593\u9694\u306f\u3001\u4e0d\u53ef\u6b20\u306a\u8efd\u6e1b\u6226\u7565\u3067\u3059\u3002.<\/p>\n<h3>\u30b0\u30eb\u30fc\u30d4\u30f3\u30b0\u4fc2\u6570\u3068\u8907\u6570\u306eMCB<\/h3>\n<p>\u8907\u6570\u306eMCB\u304c\u4e92\u3044\u306b\u8fd1\u63a5\u3057\u3066\u4e26\u3079\u3066\u53d6\u308a\u4ed8\u3051\u3089\u308c\u3066\u3044\u308b\u5834\u5408\u3001\u305d\u308c\u3089\u306e\u7d44\u307f\u5408\u308f\u305b\u3089\u308c\u305f\u71b1\u51fa\u529b\u306f\u76f8\u4e92\u52a0\u71b1\u52b9\u679c\u3092\u751f\u307f\u51fa\u3057\u307e\u3059\u3002\u3053\u308c\u306b\u306f\u3001\u8ffd\u52a0\u306e <strong>\u30b0\u30eb\u30fc\u30d4\u30f3\u30b0\u4fc2\u6570<\/strong> \u307e\u305f\u306f <strong>\u914d\u7f6e\u4fc2\u6570<\/strong> \u5468\u56f2\u6e29\u5ea6\u30c7\u30a3\u30ec\u30fc\u30c6\u30a3\u30f3\u30b0\u306b\u52a0\u3048\u3066\u3002.<\/p>\n<p>\u4f8b\u3048\u3070\u3001IEC 60947-2\u3067\u306f\u3001\u30a8\u30f3\u30af\u30ed\u30fc\u30b8\u30e3\u5185\u306b\u4e26\u3079\u3066\u8a2d\u7f6e\u3055\u308c\u305f\u56de\u8def\u30d6\u30ec\u30fc\u30ab\u306f\u3001\u72ec\u7acb\u3057\u305f\u30e6\u30cb\u30c3\u30c8\u3088\u308a\u3082\u9ad8\u3044\u52d5\u4f5c\u6e29\u5ea6\u306b\u306a\u308b\u3053\u3068\u304c\u8a8d\u8b58\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u4e00\u90e8\u306e\u30e1\u30fc\u30ab\u30fc\u306f\u5177\u4f53\u7684\u306a\u30ac\u30a4\u30c0\u30f3\u30b9\u3092\u63d0\u4f9b\u3057\u3066\u3044\u307e\u3059\u30023\u301c6\u500b\u306eMCB\u3092\u96a3\u63a5\u3057\u3066\u4e26\u3079\u305f\u5834\u5408\u3001\u6e29\u5ea6\u88dc\u6b63\u306b\u52a0\u3048\u30665\u301c10\uff05\u306e\u30c7\u30a3\u30ec\u30fc\u30c6\u30a3\u30f3\u30b0\u304c\u5fc5\u8981\u306b\u306a\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002.<\/p>\n<p>\u7d2f\u7a4d\u7684\u306a\u5f71\u97ff\u306f\u5927\u304d\u304f\u306a\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<ul>\n<li>\u5468\u56f2\u6e29\u5ea6\u30c7\u30a3\u30ec\u30fc\u30c6\u30a3\u30f3\u30b0\uff1a0.90\uff0850\u2103\u6642\uff09<\/li>\n<li>\u30b0\u30eb\u30fc\u30d4\u30f3\u30b0\u4fc2\u6570\uff1a0.95\uff08\u96a3\u63a5\u3059\u308bMCB\u304c4\u500b\u306e\u5834\u5408\uff09<\/li>\n<li>\u8907\u5408\u4fc2\u6570\uff1a0.90 \u00d7 0.95 = 0.855<\/li>\n<li>32A\u306eMCB\u306f\u5b9f\u8cea\u7684\u306b\uff1a32A \u00d7 0.855 = 27.4A\u306e\u5bb9\u91cf\u306b\u306a\u308a\u307e\u3059\u3002<\/li>\n<\/ul>\n<h3>\u63db\u6c17\u3068\u71b1\u7ba1\u7406<\/h3>\n<p>\u9069\u5207\u306a\u30a8\u30f3\u30af\u30ed\u30fc\u30b8\u30e3\u8a2d\u8a08\u306f\u3001MCB\u306e\u71b1\u6027\u80fd\u306b\u5927\u304d\u304f\u5f71\u97ff\u3057\u307e\u3059\u3002<\/p>\n<p><strong>\u81ea\u7136\u5bfe\u6d41<\/strong>\uff1aMCB\u5217\u306e\u4e0a\u4e0b\u306b\u5341\u5206\u306a\u30af\u30ea\u30a2\u30e9\u30f3\u30b9\u3092\u78ba\u4fdd\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u71b1\u3044\u7a7a\u6c17\u306f\u4e0a\u90e8\u306e\u901a\u6c17\u53e3\u304b\u3089\u6392\u51fa\u3055\u308c\u3001\u51b7\u305f\u3044\u7a7a\u6c17\u306f\u4e0b\u304b\u3089\u5165\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002.<\/p>\n<p><strong>\u5f37\u5236\u63db\u6c17<\/strong>\uff1a\u9ad8\u5bc6\u5ea6\u5b9f\u88c5\u307e\u305f\u306f\u9ad8\u6e29\u74b0\u5883\u3067\u306f\u3001\u8a31\u5bb9\u3067\u304d\u308b\u5185\u90e8\u6e29\u5ea6\u3092\u7dad\u6301\u3059\u308b\u3088\u3046\u306b\u30b5\u30a4\u30ba\u8abf\u6574\u3055\u308c\u305f\u63db\u6c17\u30d5\u30a1\u30f3\u3092\u6307\u5b9a\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u4e00\u822c\u7684\u306a\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\u3068\u3057\u3066\u3001\u30a8\u30f3\u30af\u30ed\u30fc\u30b8\u30e3\u306e\u5185\u90e8\u6e29\u5ea6\u3092\u5916\u90e8\u5468\u56f2\u6e29\u5ea6\u304b\u308910\u301c15\u2103\u4ee5\u5185\u306b\u4fdd\u3064\u3088\u3046\u306b\u3057\u3066\u304f\u3060\u3055\u3044\u3002.<\/p>\n<p><strong>\u65ad\u71b1\u30d0\u30ea\u30a2<\/strong>\uff1a\u30d0\u30c3\u30d5\u30eb\u307e\u305f\u306f\u500b\u5225\u306e\u30b3\u30f3\u30d1\u30fc\u30c8\u30e1\u30f3\u30c8\u3092\u4f7f\u7528\u3057\u3066\u3001\u9ad8\u71b1\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\uff08VFD\u3001\u96fb\u6e90\uff09\u3092MCB\u30bb\u30af\u30b7\u30e7\u30f3\u304b\u3089\u5206\u96e2\u3057\u307e\u3059\u3002.<\/p>\n<h3>\u30b1\u30fc\u30d6\u30eb\u30c7\u30a3\u30ec\u30fc\u30c6\u30a3\u30f3\u30b0\u306e\u8abf\u6574<\/h3>\n<p>\u91cd\u8981\u306a\u70b9\u3067\u3059\u304c\u3001\u898b\u843d\u3068\u3055\u308c\u304c\u3061\u306a\u70b9\u3068\u3057\u3066\u3001MCB\u306b\u63a5\u7d9a\u3055\u308c\u305f\u30b1\u30fc\u30d6\u30eb\u3082\u6e29\u5ea6\u30c7\u30a3\u30ec\u30fc\u30c6\u30a3\u30f3\u30b0\u304c\u5fc5\u8981\u3067\u3059\u3002\u56de\u8def\u4fdd\u8b77\u30b9\u30ad\u30fc\u30e0\u5168\u4f53\u306e\u4fe1\u983c\u6027\u306f\u3001\u6700\u3082\u5f31\u3044\u8981\u7d20\u306b\u3088\u3063\u3066\u6c7a\u307e\u308a\u307e\u3059\u3002.<\/p>\n<p>MCB\u304c\u6e29\u5ea6\u306e\u305f\u3081\u306b28A\u306b\u30c7\u30a3\u30ec\u30fc\u30c6\u30a3\u30f3\u30b0\u3055\u308c\u3066\u3044\u308b\u304c\u3001\u63a5\u7d9a\u3055\u308c\u305f\u30b1\u30fc\u30d6\u30eb\uff08\u6e29\u5ea6\u30c7\u30a3\u30ec\u30fc\u30c6\u30a3\u30f3\u30b0\u306e\u5bfe\u8c61\uff09\u304c\u540c\u3058\u74b0\u5883\u3067\u5b89\u5168\u306b\u904b\u3076\u3053\u3068\u304c\u3067\u304d\u308b\u306e\u306f26A\u306e\u307f\u306e\u5834\u5408\u3001\u56de\u8def\u306f28A\u3067\u306f\u306a\u304f26A\u306b\u5236\u9650\u3055\u308c\u307e\u3059\u3002\u5e38\u306bMCB\u3068\u30b1\u30fc\u30d6\u30eb\u306e\u30c7\u30a3\u30ec\u30fc\u30c6\u30a3\u30f3\u30b0\u8a08\u7b97\u3092\u8abf\u6574\u3057\u3066\u304f\u3060\u3055\u3044\u3002.<\/p>\n<h3>\u9ad8\u5ea6\u306b\u95a2\u3059\u308b\u8003\u616e\u4e8b\u9805<\/h3>\n<p>\u6a19\u9ad82,000\u30e1\u30fc\u30c8\u30eb\u3092\u8d85\u3048\u308b\u3068\u3001\u7a7a\u6c17\u5bc6\u5ea6\u304c\u4f4e\u4e0b\u3057\u3001\u51b7\u5374\u52b9\u679c\u304c\u4f4e\u4e0b\u3057\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u8ffd\u52a0\u306e\u30c7\u30a3\u30ec\u30fc\u30c6\u30a3\u30f3\u30b0\u304c\u5fc5\u8981\u306b\u306a\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002\u901a\u5e38\u3001\u9ad8\u5730\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306b\u95a2\u3059\u308b\u30e1\u30fc\u30ab\u30fc\u306e\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u306b\u6307\u5b9a\u3055\u308c\u3066\u3044\u307e\u3059\u3002.<\/p>\n<figure style=\"margin: 20px 0; text-align: center;\"><img decoding=\"async\" style=\"max-width: 100%; height: auto;\" src=\"https:\/\/img.viox.com\/technical-comparison-illustration-showing-three-mcb-installation-scenarios-well-ventilated-panel-30c-enclosed-panel-45c-and-densely-packed-enclosure-60c-with-color-coded-temperature-zones.webp\" alt=\"Technical comparison illustration showing three MCB installation scenarios - well-ventilated panel (30\u00b0C), enclosed panel (45\u00b0C), and densely packed enclosure (60\u00b0C) with color-coded temperature zones, VIOX logo\" \/><figcaption style=\"font-style: italic; font-size: 0.9em; color: #666; margin-top: 8px;\">3\u3064\u306eMCB\u8a2d\u7f6e\u30b7\u30ca\u30ea\u30aa\u3092\u793a\u3059\u6280\u8853\u7684\u306a\u6bd4\u8f03\u56f3 \u2013 \u63db\u6c17\u306e\u826f\u3044\u30d1\u30cd\u30eb\uff0830\u00b0C\uff09\u3001\u5bc6\u9589\u3055\u308c\u305f\u30d1\u30cd\u30eb\uff0845\u00b0C\uff09\u3001\u304a\u3088\u3073\u8272\u5206\u3051\u3055\u308c\u305f\u6e29\u5ea6\u30be\u30fc\u30f3\u3092\u5099\u3048\u305f\u9ad8\u5bc6\u5ea6\u5b9f\u88c5\u30a8\u30f3\u30af\u30ed\u30fc\u30b8\u30e3\uff0860\u00b0C\uff09\u3001VIOX\u30ed\u30b4<\/figcaption><\/figure>\n<h2>\u7d50\u8ad6<\/h2>\n<p>\u5468\u56f2\u6e29\u5ea6\u306f\u3001MCB\u306e\u9078\u629e\u3068\u9069\u7528\u306b\u304a\u3044\u3066\u91cd\u8981\u3067\u3042\u308a\u306a\u304c\u3089\u3001\u983b\u7e41\u306b\u904e\u5c0f\u8a55\u4fa1\u3055\u308c\u308b\u8981\u7d20\u3067\u3059\u3002MCB\u306e\u9298\u677f\u5b9a\u683c\u306f\u91cd\u8981\u306a\u60c5\u5831\u3092\u63d0\u4f9b\u3057\u307e\u3059\u304c\u3001\u6a19\u6e96\u53c2\u7167\u6e29\u5ea6\uff08\u4f4f\u5b85\/\u5546\u696d\u7528\u30c7\u30d0\u30a4\u30b9\u306e\u5834\u5408\u306f\u901a\u5e3830\u00b0C\u3001\u7523\u696d\u7528\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u5834\u5408\u306f40\u00b0C\uff09\u3067\u306e\u307f\u6027\u80fd\u3092\u8868\u3057\u307e\u3059\u3002.<\/p>\n<p>\u5b9f\u969b\u306e\u8a2d\u7f6e\u3001\u7279\u306b\u96fb\u6c17\u30a8\u30f3\u30af\u30ed\u30fc\u30b8\u30e3\u5185\u307e\u305f\u306f\u71b1\u7684\u306b\u53b3\u3057\u3044\u74b0\u5883\u3067\u306f\u3001MCB\u306e\u6709\u52b9\u306a\u901a\u96fb\u5bb9\u91cf\u304c\u5927\u5e45\u306b\u4f4e\u4e0b\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u6e29\u5ea6\u30c7\u30a3\u30ec\u30fc\u30c6\u30a3\u30f3\u30b0\u3092\u7121\u8996\u3059\u308b\u3068\u3001\u8aa4\u52d5\u4f5c\u30c8\u30ea\u30c3\u30d7\u3001\u4fdd\u8b77\u4fe1\u983c\u6027\u306e\u4f4e\u4e0b\u3001\u304a\u3088\u3073\u6a5f\u5668\u306e\u65e9\u671f\u6545\u969c\u306b\u3064\u306a\u304c\u308a\u307e\u3059\u3002.<\/p>\n<p>\u96fb\u6c17\u5c02\u9580\u5bb6\u5411\u3051\u306e\u91cd\u8981\u306a\u30dd\u30a4\u30f3\u30c8\uff1a<\/p>\n<ul>\n<li>\u90e8\u5c4b\u306e\u6e29\u5ea6\u3060\u3051\u3067\u306a\u304f\u3001MCB\u306e\u5834\u6240\u3067\u306e\u5b9f\u969b\u306e\u5468\u56f2\u6e29\u5ea6\u3092\u5e38\u306b\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/li>\n<li>\u4e00\u822c\u7684\u306a\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\u3060\u3051\u306b\u983c\u308b\u306e\u3067\u306f\u306a\u304f\u3001\u30e1\u30fc\u30ab\u30fc\u56fa\u6709\u306e\u30c7\u30a3\u30ec\u30fc\u30c6\u30a3\u30f3\u30b0\u30c6\u30fc\u30d6\u30eb\u3092\u53c2\u7167\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/li>\n<li>\u8907\u6570\u306e\u96a3\u63a5\u3059\u308bMCB\u306b\u5bfe\u3057\u3066\u3001\u6e29\u5ea6\u30c7\u30a3\u30ec\u30fc\u30c6\u30a3\u30f3\u30b0\u3068\u30b0\u30eb\u30fc\u30d4\u30f3\u30b0\u4fc2\u6570\u306e\u4e21\u65b9\u3092\u9069\u7528\u3057\u307e\u3059\u3002<\/li>\n<li>MCB\u306e\u30c7\u30a3\u30ec\u30fc\u30c6\u30a3\u30f3\u30b0\u3092\u30b1\u30fc\u30d6\u30eb\u306e\u901a\u96fb\u5bb9\u91cf\u306e\u524a\u6e1b\u3068\u8abf\u6574\u3057\u307e\u3059\u3002<\/li>\n<li>\u71b1\u306e\u84c4\u7a4d\u3092\u7ba1\u7406\u3059\u308b\u305f\u3081\u306b\u3001\u9069\u5207\u306a\u63db\u6c17\u3092\u5099\u3048\u305f\u30a8\u30f3\u30af\u30ed\u30fc\u30b8\u30e3\u3092\u8a2d\u8a08\u3057\u307e\u3059\u3002<\/li>\n<\/ul>\n<p>VIOX\u3067\u306f\u3001\u8a73\u7d30\u306a\u6e29\u5ea6\u30c7\u30a3\u30ec\u30fc\u30c6\u30a3\u30f3\u30b0\u66f2\u7dda\u3068\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u30ac\u30a4\u30c0\u30f3\u30b9\u3092\u542b\u3080\u3001\u3059\u3079\u3066\u306eMCB\u88fd\u54c1\u30e9\u30a4\u30f3\u306e\u5305\u62ec\u7684\u306a\u6280\u8853\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u3092\u63d0\u4f9b\u3057\u3066\u3044\u307e\u3059\u3002\u5f53\u793e\u306e\u30a8\u30f3\u30b8\u30cb\u30a2\u30ea\u30f3\u30b0\u30b5\u30dd\u30fc\u30c8\u30c1\u30fc\u30e0\u306f\u3001\u71b1\u7ba1\u7406\u304c\u91cd\u8981\u306a\u8907\u96d1\u306a\u8a2d\u7f6e\u3092\u652f\u63f4\u3059\u308b\u305f\u3081\u306b\u5229\u7528\u3067\u304d\u307e\u3059\u3002\u5468\u56f2\u6e29\u5ea6\u3092\u8003\u616e\u3057\u305f\u9069\u5207\u306aMCB\u9078\u629e\u306b\u3088\u308a\u3001\u96fb\u6c17\u4fdd\u8b77\u30b7\u30b9\u30c6\u30e0\u304c\u5fc5\u8981\u306a\u3068\u304d\u306b\u6b63\u78ba\u306b\u3001\u4fe1\u983c\u6027\u306e\u9ad8\u3044\u9577\u671f\u7684\u306a\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u63d0\u4f9b\u3059\u308b\u3053\u3068\u304c\u4fdd\u8a3c\u3055\u308c\u307e\u3059\u3002.<\/p>\n<p>VIOX MCB\u306e\u6280\u8853\u4ed5\u69d8\u3001\u30c7\u30a3\u30ec\u30fc\u30c6\u30a3\u30f3\u30b0\u30c6\u30fc\u30d6\u30eb\u3001\u304a\u3088\u3073\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u30b5\u30dd\u30fc\u30c8\u306b\u3064\u3044\u3066\u306f\u3001\u88fd\u54c1\u30ab\u30bf\u30ed\u30b0\u3092\u53c2\u7167\u3059\u308b\u304b\u3001\u5f53\u793e\u306e\u6280\u8853\u30c1\u30fc\u30e0\u306b\u304a\u554f\u3044\u5408\u308f\u305b\u304f\u3060\u3055\u3044\u3002.<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>Introduction When selecting a miniature circuit breaker (MCB) for an electrical installation, most engineers focus on the rated current\u2014but there&#8217;s a critical variable that can drastically affect performance: ambient temperature. An MCB rated at 32A won&#8217;t necessarily carry 32A safely in all environments. In fact, at elevated temperatures, that same MCB might trip at just 28A or lower, leading to unexpected shutdowns and system failures. Understanding MCB ambient temperature ratings and derating factors is essential for electrical professionals who need to ensure reliable protection in diverse operating conditions. Whether you&#8217;re designing a control panel for a desert climate, specifying breakers for an enclosed machinery cabinet, or troubleshooting nuisance tripping issues, [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":20748,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[1],"tags":[],"class_list":["post-20745","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"_links":{"self":[{"href":"https:\/\/test.viox.com\/ja\/wp-json\/wp\/v2\/posts\/20745","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/test.viox.com\/ja\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/test.viox.com\/ja\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/test.viox.com\/ja\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/test.viox.com\/ja\/wp-json\/wp\/v2\/comments?post=20745"}],"version-history":[{"count":2,"href":"https:\/\/test.viox.com\/ja\/wp-json\/wp\/v2\/posts\/20745\/revisions"}],"predecessor-version":[{"id":20747,"href":"https:\/\/test.viox.com\/ja\/wp-json\/wp\/v2\/posts\/20745\/revisions\/20747"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/test.viox.com\/ja\/wp-json\/wp\/v2\/media\/20748"}],"wp:attachment":[{"href":"https:\/\/test.viox.com\/ja\/wp-json\/wp\/v2\/media?parent=20745"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/test.viox.com\/ja\/wp-json\/wp\/v2\/categories?post=20745"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/test.viox.com\/ja\/wp-json\/wp\/v2\/tags?post=20745"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}