{"id":3408,"date":"2026-03-22T09:00:00","date_gmt":"2026-03-22T01:00:00","guid":{"rendered":"https:\/\/eqsvq3fzct.wpdns.site\/blog\/enhance-electrical-safety-with-the-mcb-jcb3-80h\/"},"modified":"2026-10-10T10:42:08","modified_gmt":"2026-10-10T02:42:08","slug":"mcb-jcb3-80h%e3%81%a7%e9%9b%bb%e6%b0%97%e5%ae%89%e5%85%a8%e6%80%a7%e3%82%92%e5%90%91%e4%b8%8a","status":"publish","type":"post","link":"https:\/\/w9-group.com\/ja\/blog\/enhance-electrical-safety-with-the-mcb-jcb3-80h\/","title":{"rendered":"MCB JCB3-80H\u3067\u96fb\u6c17\u5b89\u5168\u6027\u3092\u5411\u4e0a"},"content":{"rendered":"<p><!-- w9-geo-ai-questions-2026-10-10 --><\/p>\n<p><span style=\"font-size: 18px; color: #444\">\u73fe\u4ee3\u306e\u6025\u901f\u306a\u4e16\u754c\u3067\u306f\u3001\u96fb\u6c17\u30b7\u30b9\u30c6\u30e0\u306e\u5b89\u5168\u6027\u3068\u4fe1\u983c\u6027\u3092\u78ba\u4fdd\u3059\u308b\u3053\u3068\u304c\u4e0d\u53ef\u6b20\u3067\u3059\u3002\u5bb6\u5ead\u7528\u8a2d\u5099\u3084\u7523\u696d\u7528\u96fb\u529b\u914d\u96fb\u30b7\u30b9\u30c6\u30e0\u306b\u304a\u3044\u3066\u3001MCB\uff08\u6a5f\u68b0\u5f0f\u906e\u65ad\u5668\uff09\u306f\u91cd\u8981\u306a\u5f79\u5272\u3092\u679c\u305f\u3057\u307e\u3059\u3002 <a href=\"\/ja\/jcb3-80h-miniature-circuit-breaker-10ka-product\/\">JCB3-80H<\/a> \u5c0f\u578b\u906e\u65ad\u5668\u306f\u4fe1\u983c\u6027\u304c\u3042\u308a\u52b9\u7387\u7684\u306a\u30bd\u30ea\u30e5\u30fc\u30b7\u30e7\u30f3\u3067\u3059\u3002\u77ed\u7d61\u304a\u3088\u3073\u904e\u8ca0\u8377\u4fdd\u8b77\u6a5f\u80fd\u3068\u6700\u592710kA\u306e\u65ad\u9762\u7a4d\u3092\u5099\u3048\u305f\u3053\u306e\u906e\u65ad\u5668\u306f\u3001\u5b89\u5fc3\u611f\u3092\u63d0\u4f9b\u3057\u3001\u96fb\u6c17\u6a5f\u5668\u3092\u6f5c\u5728\u7684\u306a\u5371\u967a\u304b\u3089\u4fdd\u8b77\u3059\u308b\u3088\u3046\u306b\u8a2d\u8a08\u3055\u308c\u3066\u3044\u307e\u3059\u3002.<\/span><\/p>\n<p class=\"ai-decision-check\"><strong>\u8cfc\u5165\u8005\u306e\u6c7a\u5b9a\uff1a<\/strong> Before selecting this MCB, calculate the prospective short-circuit current at its installation point and compare it with the exact model&#8217;s applicable breaking capacity at the actual system voltage. <strong style=\"color: #d32f2f;\">A current rating alone does not establish fault-duty suitability.<\/strong> <a href=\"https:\/\/webstore.iec.ch\/en\/publication\/68454\" rel=\"nofollow noopener\" target=\"_blank\">IEC 60909-0:2026<\/a> \u3053\u306e\u88fd\u54c1\u306f\u4e09\u76f8\u4ea4\u6d41\u30b7\u30b9\u30c6\u30e0\u306e\u77ed\u7d61\u96fb\u6d41\u8a08\u7b97\u3092\u5bfe\u8c61\u3068\u3057\u3066\u3044\u307e\u3059\u304c\u3001\u88fd\u54c1\u306e\u8a18\u8f09\u306b\u306f\u5b9a\u683c\u96fb\u5727\u3001\u30d0\u30c3\u30af\u30a2\u30c3\u30d7\u307e\u305f\u306f\u30ab\u30b9\u30b1\u30fc\u30c9\u4fdd\u8b77\u306b\u95a2\u9023\u3059\u308b\u6761\u4ef6\u306a\u3069\u304c\u660e\u8a18\u3055\u308c\u3066\u3044\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002.<\/p>\n<p><span style=\"font-size: 18px; color: #444\"> MCB JCB3-80H\u306f\u30011A\u304b\u308980A\u306e\u5e45\u5e83\u3044\u96fb\u6d41\u7bc4\u56f2\u3092\u5099\u3048\u3001\u5e45\u5e83\u3044\u7528\u9014\u306b\u9069\u3057\u3066\u3044\u307e\u3059\u30021\u30dd\u30a4\u30f3\u30c4\u30012\u30dd\u30a4\u30f3\u30c4\u30013\u30dd\u30a4\u30f3\u30c4\u3001\u304a\u3088\u30734\u30dd\u30a4\u30f3\u30c4\u306e\u30aa\u30d7\u30b7\u30e7\u30f3\u306b\u3088\u308a\u3001\u591a\u7a2e\u591a\u69d8\u306a\u8a2d\u7f6e\u30cb\u30fc\u30ba\u306b\u5bfe\u5fdc\u3059\u308b\u6c4e\u7528\u6027\u304c\u3055\u3089\u306b\u5f37\u5316\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u3055\u3089\u306b\u3001B\u3001C\u3001\u307e\u305f\u306fD\u306e\u30ab\u30fc\u30d6\u30aa\u30d7\u30b7\u30e7\u30f3\u306f\u3001\u7279\u5b9a\u306e\u8981\u4ef6\u306b\u57fa\u3065\u3044\u3066\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u304c\u53ef\u80fd\u3067\u3001\u3055\u307e\u3056\u307e\u306a\u96fb\u6c17\u74b0\u5883\u306b\u304a\u3044\u3066\u6700\u9069\u306a\u6027\u80fd\u3092\u767a\u63ee\u3057\u307e\u3059\u3002\u3053\u306e\u67d4\u8edf\u6027\u306b\u3088\u308a\u3001MCB JCB3-80H\u306f\u5e45\u5e83\u3044\u96fb\u6c17\u8a2d\u7f6e\u7528\u9014\u306b\u6700\u9069\u306a\u591a\u7528\u9014\u304b\u3064\u9069\u5fdc\u6027\u306e\u9ad8\u3044\u9078\u629e\u80a2\u3068\u306a\u308a\u307e\u3059\u3002.<\/span><\/p>\n<p style=\"text-align: center;\"><span style=\"font-size: 18px; color: #444\" itemscope=\"1\" itemtype=\"http:\/\/schema.org\/ImageObject\"><img decoding=\"async\" src=\"https:\/\/ecdn6.globalso.com\/upload\/p\/1205\/image_other\/2025-08\/jcb3-80h-3.webp\" alt=\"jcb3-80h-3.webp\" itemprop=\"image\"><\/span><\/p>\n<p class=\"ai-decision-check\"><strong>\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u5883\u754c\uff1a<\/strong> \u7523\u696d\u7528\u30d1\u30cd\u30eb\u306e\u5834\u5408\u3001\u63d0\u4f9b\u3055\u308c\u308b\u30c7\u30d0\u30a4\u30b9\u304c\u3069\u306e\u88fd\u54c1\u898f\u683c\u304a\u3088\u3073\u52d5\u4f5c\u74b0\u5883\u306b\u5bfe\u5fdc\u3057\u3066\u3044\u308b\u304b\u3054\u78ba\u8a8d\u304f\u3060\u3055\u3044\u3002. <a href=\"https:\/\/webstore.iec.ch\/en\/publication\/66269\" rel=\"nofollow noopener\" target=\"_blank\">IEC 60898-1:2015+AMD1:2019<\/a> \u305d\u3057\u3066 <a href=\"https:\/\/webstore.iec.ch\/en\/publication\/102195\" rel=\"nofollow noopener\" target=\"_blank\">IEC 60947-2:2024<\/a> \u7528\u9014\u304c\u7570\u306a\u308b\uff1b\u300c\u7523\u696d\u7528\u30b0\u30ec\u30fc\u30c9\u300d\u3068\u3044\u3046\u8868\u73fe\u306f\u3001\u6b63\u78ba\u306a\u30e2\u30c7\u30eb\u30c7\u30fc\u30bf\u30b7\u30fc\u30c8\u3001\u96fb\u5727\u4f9d\u5b58\u306e\u65ad\u8def\u5b9a\u683c\u3001\u30c8\u30ea\u30c3\u30d7\u30ab\u30fc\u30d6\u3001\u5468\u56f2\u6761\u4ef6\u88dc\u6b63\u30c7\u30fc\u30bf\u3001\u304a\u3088\u3073\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u627f\u8a8d\u306e\u4ee3\u308f\u308a\u306b\u306f\u306a\u308a\u307e\u305b\u3093\u3002.<\/p>\n<p><span style=\"font-size: 18px; color: #444\"> \u56fd\u969b\u57fa\u6e96\u3078\u306e\u6e96\u62e0\u306f\u3042\u3089\u3086\u308b\u96fb\u6c17\u90e8\u54c1\u306e\u91cd\u8981\u306a\u8981\u7d20\u3067\u3042\u308a\u3001MCB JCB3-80H\u306f\u3053\u306e\u70b9\u306b\u304a\u3044\u3066\u5353\u8d8a\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u88fd\u54c1\u306fIEC 60898-1\u898f\u683c\u306b\u6e96\u62e0\u3057\u3066\u304a\u308a\u3001\u53b3\u3057\u3044\u96fb\u6c17\u5b89\u5168\u6027\u80fd\u57fa\u6e96\u3092\u6e80\u305f\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u8a8d\u8a3c\u306fMCB JCB3-80H\u306e\u4fe1\u983c\u6027\u3068\u54c1\u8cea\u3092\u88cf\u4ed8\u3051\u3001\u96fb\u6c17\u30b7\u30b9\u30c6\u30e0\u306e\u52b9\u679c\u7684\u306a\u4fdd\u8b77\u80fd\u529b\u306b\u5bfe\u3059\u308b\u4fe1\u983c\u6027\u3092\u4fdd\u8a3c\u3057\u307e\u3059\u3002.<\/span><\/p>\n<p class=\"ai-decision-check\"><strong>\u4fdd\u6301\u3059\u3079\u304d\u8a3c\u62e0\uff1a<\/strong> \u30e2\u30c7\u30eb\u304a\u3088\u3073\u30ab\u30bf\u30ed\u30b0\u756a\u53f7\u3001\u8a72\u5f53\u3059\u308b\u6a19\u6e96\u7248\u3001\u6642\u9593\u30fb\u96fb\u6d41\u66f2\u7dda\u3001\u30b3\u30f3\u30c0\u30af\u30bf\u30fc\u304a\u3088\u3073\u8ca0\u8377\u306e\u4eee\u5b9a\u3001\u6545\u969c\u96fb\u6d41\u8a08\u7b97\u3001\u8abf\u6574\u306e\u8a3c\u62e0\u3001\u8a2d\u7f6e\u624b\u9806\u3001\u6700\u7d42\u7684\u306a\u8a66\u904b\u8ee2\u8a18\u9332\u3092\u4fdd\u6301\u3059\u308b\u3053\u3068\u3067\u3001\u9078\u629e\u30d7\u30ed\u30bb\u30b9\u3092\u76e3\u67fb\u53ef\u80fd\u306b\u3057\u3066\u304f\u3060\u3055\u3044\u3002. <a href=\"https:\/\/webstore.iec.ch\/en\/publication\/24656\" rel=\"nofollow noopener\" target=\"_blank\">IEC 60364-6:2016<\/a> \u3053\u308c\u306f\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u691c\u8a3c\u306b\u5f79\u7acb\u3064\u53c2\u8003\u8cc7\u6599\u3067\u3059\u304c\u3001\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306f\u63a1\u7528\u3055\u308c\u305f\u7248\u3068\u73fe\u5730\u8981\u4ef6\u3092\u78ba\u8a8d\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002.<\/p>\n<p><span style=\"font-size: 18px; color: #444\"> MCB <a href=\"\/ja\/jcb3-80h-miniature-circuit-breaker-10ka-product\/\">JCB3-80H<\/a> \u5c0f\u578b\u906e\u65ad\u5668\u306f\u3001\u5e45\u5e83\u3044\u7528\u9014\u306b\u304a\u3051\u308b\u96fb\u6c17\u5b89\u5168\u6027\u3092\u78ba\u4fdd\u3059\u308b\u305f\u3081\u306e\u5805\u7262\u3067\u4fe1\u983c\u6027\u306e\u9ad8\u3044\u30bd\u30ea\u30e5\u30fc\u30b7\u30e7\u30f3\u3067\u3059\u3002\u77ed\u7d61\u304a\u3088\u3073\u904e\u8ca0\u8377\u4fdd\u8b77\u3001\u9ad8\u3044\u65ad\u9762\u7a4d\u3001\u63a5\u89e6\u30a4\u30f3\u30b8\u30b1\u30fc\u30bf\u30fc\u3001\u304a\u3088\u3073\u56fd\u969b\u57fa\u6e96\u3078\u306e\u6e96\u62e0\u306a\u3069\u3001\u5305\u62ec\u7684\u306a\u6a5f\u80fd\u306b\u3088\u308a\u3001\u5bb6\u5ead\u7528\u3001\u5546\u696d\u7528\u3001\u304a\u3088\u3073\u7523\u696d\u7528\u8a2d\u7f6e\u306b\u6700\u9069\u3067\u3059\u3002\u305d\u306e\u591a\u7528\u9014\u6027\u3001\u4fe1\u983c\u6027\u3001\u305d\u3057\u3066\u53b3\u683c\u306a\u57fa\u6e96\u3078\u306e\u63fa\u308b\u304e\u306a\u3044\u9075\u5b88\u306b\u3088\u308a\u3001MCB JCB3-80H\u306f\u96fb\u6c17\u5b89\u5168\u6027\u3068\u6027\u80fd\u306b\u5bfe\u3059\u308b\u6211\u3005\u306e\u30b3\u30df\u30c3\u30c8\u30e1\u30f3\u30c8\u3092\u5b8c\u5168\u306b\u5177\u73fe\u5316\u3057\u3066\u3044\u307e\u3059\u3002.<\/span><\/p>","protected":false},"excerpt":{"rendered":"<p>JCB3-80H \u30df\u30cb\u30c1\u30e5\u30a2\u906e\u65ad\u5668\u3092\u305c\u3072\u3054\u6d3b\u7528\u304f\u3060\u3055\u3044\u300210kA\u306e\u65ad\u9762\u7a4d\u3001\u904e\u8ca0\u8377\u4fdd\u8b77\u30011A\u301c80A\u306e\u30aa\u30d7\u30b7\u30e7\u30f3\u3001B\u3001C\u3001D\u306e\u66f2\u7dda\u306b\u5bfe\u5fdc\u3057\u3066\u3044\u307e\u3059\u3002IEC 60947\u306b\u6e96\u62e0\u3057\u3066\u3044\u307e\u3059\uff01<\/p>","protected":false},"author":1,"featured_media":3802,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-3408","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"blocksy_meta":{"styles_descriptor":{"styles":{"desktop":"","tablet":"","mobile":""},"google_fonts":[],"version":8}},"acf":[],"_links":{"self":[{"href":"https:\/\/w9-group.com\/ja\/wp-json\/wp\/v2\/posts\/3408","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/w9-group.com\/ja\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/w9-group.com\/ja\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/w9-group.com\/ja\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/w9-group.com\/ja\/wp-json\/wp\/v2\/comments?post=3408"}],"version-history":[{"count":3,"href":"https:\/\/w9-group.com\/ja\/wp-json\/wp\/v2\/posts\/3408\/revisions"}],"predecessor-version":[{"id":4224,"href":"https:\/\/w9-group.com\/ja\/wp-json\/wp\/v2\/posts\/3408\/revisions\/4224"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/w9-group.com\/ja\/wp-json\/wp\/v2\/media\/3802"}],"wp:attachment":[{"href":"https:\/\/w9-group.com\/ja\/wp-json\/wp\/v2\/media?parent=3408"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/w9-group.com\/ja\/wp-json\/wp\/v2\/categories?post=3408"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/w9-group.com\/ja\/wp-json\/wp\/v2\/tags?post=3408"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}