![\"\"](\"https:\/\/cnkuangya.com\/wp-content\/uploads\/2026\/01\/315cea5763a28843bf9a44bacc945d7e44ca718f939fa8d0bcea0f850c3b27ac-1024x683.jpg\")
<\/figure>\n\n\n\n\u30bf\u30a4\u30d7B\u30d7\u30ed\u30c6\u30af\u30b7\u30e7\u30f3\u306e\u6280\u8853\u7684\u57fa\u76e4<\/h3>\n\n\n\n
At its core, a standard RCD (Type AC or Type A) operates on a simple, elegant principle: it uses a differential current transformer to measure the balance of current between the line and neutral conductors. In a healthy circuit, these currents are equal and opposite, summing to zero. A fault to earth causes an imbalance, which induces a current in the transformer’s sense coil and trips the device.<\/p>\n\n\n\n
However, Type AC RCDs are designed only for sinusoidal AC currents, while Type A RCDs add protection for pulsating DC currents. Neither is designed to detect smooth DC residual currents. This is a critical vulnerability. Power conversion electronics, common in modern systems, can produce smooth DC leakage that saturates the magnetic core of a Type A RCD. This phenomenon, known as “blinding,” effectively turns the safety device into a useless piece of plastic, unaware of any subsequent AC or pulsating DC faults.<\/p>\n\n\n\n
\u305d\u3053\u3067 \u30bf\u30a4\u30d7B RCCB<\/a>\u304c\u4e0d\u53ef\u6b20\u3068\u306a\u308b\u3002\u53b3\u683c\u306a\u00a0IEC 62423<\/strong>\u00a0\u6a19\u6e96\u306e\u30bf\u30a4\u30d7B\u30c7\u30d0\u30a4\u30b9\u306f\u3001\u9ad8\u5ea6\u306a\u96fb\u5b50\u56de\u8def\u3068\u4e8c\u6b21\u691c\u77e5\u6a5f\u69cb\u3092\u5185\u8535\u3057\u3066\u304a\u308a\u3001\u7d14\u7c8b\u306a\u6b63\u5f26\u6ce2AC\u3001\u8108\u52d5DC\u3001\u9ad8\u5468\u6ce2AC\u3001\u305d\u3057\u3066\u6700\u3082\u91cd\u8981\u306a\u5e73\u6ed1DC\u306a\u3069\u3001\u3042\u3089\u3086\u308b\u6545\u969c\u96fb\u6d41\u3092\u691c\u77e5\u3067\u304d\u308b\u3088\u3046\u7279\u5225\u306b\u8a2d\u8a08\u3055\u308c\u3066\u3044\u308b\u3002.<\/p>\n\n\n\n cnkuanya\u306e\u8a2d\u8a08\u54f2\u5b66\u306f\u3001Doepke\u306e\u3088\u3046\u306a\u4e16\u754c\u3092\u30ea\u30fc\u30c9\u3059\u308b\u30c9\u30a4\u30c4\u30e1\u30fc\u30ab\u30fc\u306e\u59a5\u5354\u306e\u306a\u3044\u54c1\u8cea\u3068\u4fe1\u983c\u6027\u306b\u30a4\u30f3\u30b9\u30d1\u30a4\u30a2\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u79c1\u305f\u3061\u306f\u3001\u5b89\u5168\u88c5\u7f6e\u306f\u6700\u60aa\u306e\u30b7\u30ca\u30ea\u30aa\u306b\u5099\u3048\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u3068\u8003\u3048\u3066\u3044\u307e\u3059\u3002VKL11B\u30b7\u30ea\u30fc\u30ba\u306f\u3001\u3053\u306e\u54f2\u5b66\u304b\u3089\u751f\u307e\u308c\u305f\u88fd\u54c1\u3067\u3059\u3002\u59a5\u5354\u3059\u308b\u3053\u3068\u306a\u304f\u5805\u7262\u3067\u4fe1\u983c\u6027\u306e\u9ad8\u3044\u4fdd\u8b77\u3092\u63d0\u4f9b\u3059\u308b\u30bf\u30a4\u30d7B\u306eRCCB\u30b7\u30ea\u30fc\u30ba\u3067\u3001\u4e88\u898b\u53ef\u80fd\u306a\u3059\u3079\u3066\u306e\u6b8b\u7559\u96fb\u6d41\u969c\u5bb3\u304b\u3089\u56de\u8def\u3092\u78ba\u5b9f\u306b\u4fdd\u8b77\u3057\u307e\u3059\u3002.<\/p>\n\n\n\n VRL22BVKL11B\u30b7\u30ea\u30fc\u30ba\u306f\u5358\u4e00\u88fd\u54c1\u3067\u306f\u306a\u304f\u3001\u7279\u5b9a\u306e\u8981\u6c42\u306e\u53b3\u3057\u3044\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306b\u5408\u308f\u305b\u305f\u30bd\u30ea\u30e5\u30fc\u30b7\u30e7\u30f3\u306e\u5b8c\u5168\u306a\u30d5\u30a1\u30df\u30ea\u30fc\u3067\u3059\u3002\u5404\u88fd\u54c1\u306f\u540c\u3058B\u578b\u30b3\u30a2\u6280\u8853\u3092\u5171\u6709\u3057\u3066\u3044\u307e\u3059\u304c\u3001\u72ec\u81ea\u306e\u8ab2\u984c\u306b\u5bfe\u5fdc\u3059\u308b\u305f\u3081\u306b\u6700\u9069\u5316\u3055\u308c\u3066\u3044\u307e\u3059\u3002.<\/p>\n\n\n\n \u306b\u3064\u3044\u3066\u00a0VKL11B+\u5f37\u5316\u30bf\u30a4\u30d7B\u6f0f\u96fb\u906e\u65ad\u5668<\/strong>\u00a0represents the next step in all-current sensitivity. While standard Type B RCCBs are tested up to 1kHz, the B+ variant extends its certified detection range for high-frequency leakage currents up to 20kHz, with tripping values defined below 420mA. This makes it the ideal future-proof solution for environments with a high density of cutting-edge electronics, ensuring protection against not only today’s fault currents but tomorrow’s as well.<\/p>\n\n\n\n \u7523\u696d\u74b0\u5883\u306b\u306f\u5f37\u529b\u306a\u6a5f\u68b0\u304c\u591a\u304f\u3001\u305d\u306e\u591a\u304f\u306f\u4e09\u76f8VFD\u3068\u30b3\u30f3\u30d0\u30fc\u30bf\u30fc\u306b\u4f9d\u5b58\u3057\u3066\u3044\u307e\u3059\u3002\u305d\u306e\u305f\u3081\u00a0VKL11B HP\u30cf\u30a4\u30d1\u30ef\u30fc\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3<\/strong>\u00a0\u30d0\u30ea\u30a2\u30f3\u30c8\u306f\u3001\u307e\u3055\u306b\u3053\u306e\u76ee\u7684\u306e\u305f\u3081\u306b\u8a2d\u8a08\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u5927\u96fb\u529b\u306e\u30e2\u30fc\u30bf\u30fc\u3001\u30dd\u30f3\u30d7\u3001HVAC\u30b7\u30b9\u30c6\u30e0\u3001\u88fd\u9020\u88c5\u7f6e\u306a\u3069\u3001\u76f4\u6d41\u3084\u9ad8\u5468\u6ce2\u306e\u5927\u304d\u306a\u6f0f\u308c\u96fb\u6d41\u304c\u767a\u751f\u3059\u308b\u53ef\u80fd\u6027\u306e\u3042\u308b\u6a5f\u5668\u306b\u4fe1\u983c\u6027\u306e\u9ad8\u3044\u30bf\u30a4\u30d7B\u306e\u4fdd\u8b77\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002\u305d\u306e\u5805\u7262\u306a\u69cb\u9020\u306f\u3001\u53b3\u3057\u3044\u7523\u696d\u6761\u4ef6\u4e0b\u3067\u306e\u5b89\u5b9a\u6027\u3068\u6027\u80fd\u3092\u4fdd\u8a3c\u3057\u307e\u3059\u3002.<\/p>\n\n\n\n \u30b0\u30ea\u30fc\u30f3\u30a8\u30cd\u30eb\u30ae\u30fc\u9769\u547d\u306f\u592a\u967d\u96fb\u6c60\u6280\u8853\u306b\u3088\u3063\u3066\u3082\u305f\u3089\u3055\u308c\u3066\u3044\u307e\u3059\u304c\u3001\u3053\u308c\u306b\u306f\u72ec\u7279\u306e\u96fb\u6c17\u5b89\u5168\u4e0a\u306e\u8ab2\u984c\u304c\u4f34\u3044\u307e\u3059\u3002\u30c8\u30e9\u30f3\u30b9\u30ec\u30b9PV\u30a4\u30f3\u30d0\u30fc\u30bf\u30fc\u306f\u3001\u30b9\u30e0\u30fc\u30ba\u306a\u76f4\u6d41\u6f0f\u308c\u96fb\u6d41\u306e\u4e00\u822c\u7684\u306a\u767a\u751f\u6e90\u3067\u3059\u3002\u305d\u306e\u305f\u3081\u00a0VKL11B PV\u30bd\u30fc\u30e9\u30fc\u30b7\u30b9\u30c6\u30e0 RCCB<\/strong>\u00a0\u306f\u3001\u3053\u308c\u3089\u306e\u30b7\u30b9\u30c6\u30e0\u306b\u4e0d\u53ef\u6b20\u306a\u4fdd\u8b77\u3092\u63d0\u4f9b\u3059\u308b\u305f\u3081\u306b\u7279\u5225\u306b\u8a2d\u8a08\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u592a\u967d\u5149\u767a\u96fb\u8a2d\u5099\u306e\u76f4\u6d41\u5074\u3067\u969c\u5bb3\u304c\u767a\u751f\u3057\u3066\u3082\u3001\u4ea4\u6d41\u30b7\u30b9\u30c6\u30e0\u5168\u4f53\u306e\u5b89\u5168\u6027\u304c\u640d\u306a\u308f\u308c\u306a\u3044\u3088\u3046\u306b\u3057\u3001\u4eba\u54e1\u3068\u6a5f\u5668\u306e\u4e21\u65b9\u3092\u4fdd\u8b77\u3057\u307e\u3059\u3002.<\/p>\n\n\n\n \u96fb\u52d5\u30e2\u30d3\u30ea\u30c6\u30a3\u306e\u6025\u901f\u306a\u666e\u53ca\u306b\u306f\u3001\u305d\u308c\u306b\u5bfe\u5fdc\u3057\u305f\u5b89\u5168\u30a4\u30f3\u30d5\u30e9\u306e\u9032\u5316\u304c\u5fc5\u8981\u3060\u3002VKL11B EV\u96fb\u6c17\u81ea\u52d5\u8eca\u5145\u96fb\u4fdd\u8b77<\/strong>\u00a0\u306f\u3001\u4f4f\u5b85\u7528\u307e\u305f\u306f\u5546\u696d\u7528\u306eEV\u5145\u96fb\u30b9\u30c6\u30fc\u30b7\u30e7\u30f3\u306b\u3068\u3063\u3066\u91cd\u8981\u306a\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3067\u3059\u3002EV\u5145\u96fb\u5668\u306f\u3001AC\u96fb\u6e90\u3068\u5927\u578bDC\u30d0\u30c3\u30c6\u30ea\u30fc\u30d1\u30c3\u30af\u306e\u9593\u306e\u76f4\u63a5\u30d6\u30ea\u30c3\u30b8\u3067\u3059\u3002\u7d76\u7e01\u4e0d\u826f\u304c\u767a\u751f\u3057\u305f\u5834\u5408\u3001\u5927\u304d\u306a\u5e73\u6ed1\u76f4\u6d41\u96fb\u6d41\u304c\u4fdd\u8b77\u30a2\u30fc\u30b9\u306b\u6f0f\u308c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002VKL11B-EV\u306f\u3001\u3053\u306e\u3088\u3046\u306a\u6761\u4ef6\u4e0b\u3067\u306e\u906e\u65ad\u3092\u4fdd\u8a3c\u3057\u3001\u4ed6\u306e\u6f0f\u96fb\u906e\u65ad\u5668\u306e\u4e0a\u6d41\u5074\u3078\u306e\u6f0f\u96fb\u3092\u9632\u6b62\u3057\u3001\u30e6\u30fc\u30b6\u30fc\u306b\u5bfe\u3059\u308b\u6700\u9ad8\u30ec\u30d9\u30eb\u306e\u5b89\u5168\u6027\u3092\u4fdd\u8a3c\u3057\u307e\u3059\u3002IEC 60364-7-722\u306b\u57fa\u3065\u304d\u3001AC\u5145\u96fb\u30dd\u30a4\u30f3\u30c8\u306f\u30bf\u30a4\u30d7B\u306e\u6f0f\u96fb\u906e\u65ad\u5668\u307e\u305f\u306f\u30bf\u30a4\u30d7A\u306e\u6f0f\u96fb\u906e\u65ad\u5668\u3068\u30016mA\u3092\u8d85\u3048\u308bDC\u6545\u969c\u6642\u306b\u78ba\u5b9f\u306b\u906e\u65ad\u3059\u308b\u88c5\u7f6e\u306b\u3088\u3063\u3066\u4fdd\u8b77\u3055\u308c\u306a\u3051\u308c\u3070\u306a\u308a\u307e\u305b\u3093\u3002VKL11B-EV\u306f\u3001\u30aa\u30fc\u30eb\u30a4\u30f3\u30ef\u30f3\u306e\u6e96\u62e0\u30bd\u30ea\u30e5\u30fc\u30b7\u30e7\u30f3\u3067\u3059\u3002.<\/p>\n\n\n\n \u533b\u7642\u73fe\u5834\u3067\u306f\u3001\u6a5f\u5668\u306e\u4fe1\u983c\u6027\u306f\u6b7b\u6d3b\u554f\u984c\u3067\u3059\u3002MRI\u88c5\u7f6e\u3001CT\u30b9\u30ad\u30e3\u30ca\u30fc\u3001X\u7dda\u88c5\u7f6e\u306a\u3069\u306e\u6a5f\u5668\u306f\u3001\u8907\u96d1\u306a\u6f0f\u308c\u96fb\u6d41\u3092\u767a\u751f\u3055\u305b\u308b\u53ef\u80fd\u6027\u306e\u3042\u308b\u9ad8\u5ea6\u306a\u30d1\u30ef\u30fc\u30a8\u30ec\u30af\u30c8\u30ed\u30cb\u30af\u30b9\u3092\u5229\u7528\u3057\u3066\u3044\u307e\u3059\u3002\u305d\u306e\u305f\u3081\u00a0VKL11B MI \u533b\u7642\u7528\u7d76\u7e01\u6f0f\u96fb\u906e\u65ad\u5668<\/strong>\u00a0\u306f\u3001\u3053\u306e\u3088\u3046\u306a\u30c7\u30ea\u30b1\u30fc\u30c8\u306a\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u5411\u3051\u306b\u8a2d\u8a08\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u3053\u308c\u306f\u3001\u52d5\u4f5c\u6f0f\u308c\u306b\u3088\u308b\u8ff7\u60d1\u306a\u30c8\u30ea\u30c3\u30d7\u3092\u9632\u3050\u3068\u540c\u6642\u306b\u3001\u672c\u7269\u306e\u5371\u967a\u306a\u6545\u969c\u304c\u767a\u751f\u3057\u305f\u5834\u5408\u306e\u906e\u65ad\u3092\u4fdd\u8a3c\u3059\u308b\u3001\u9ad8\u514d\u75ab\u6027\u306e\u30bf\u30a4\u30d7 B \u4fdd\u8b77\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002.<\/p>\n\n\n\n In complex, tiered electrical distribution systems, fault discrimination is essential. A fault in a final circuit should not cause a trip in the main distribution board, leading to a widespread outage. The\u00a0VKL11B-S is a “Selective” or time-delayed Type B RCCB. It is designed to be installed upstream of other instantaneous RCDs. Its intentional time delay ensures that the RCD closest to the fault trips first, isolating the problem locally and maintaining power to the rest of the installation.<\/p>\n\n\n\n \u30b9\u30a4\u30c3\u30c1\u30f3\u30b0\u8ca0\u8377\u304c\u5927\u304d\u3044\u3001\u307e\u305f\u306f\u96f7\u306b\u3055\u3089\u3055\u308c\u308b\u6a5f\u4f1a\u304c\u591a\u3044\u74b0\u5883\u3067\u306f\u3001\u904e\u6e21\u96fb\u5727\u30b5\u30fc\u30b8\u304c\u767a\u751f\u3057\u3084\u3059\u3044\u3002\u3053\u306e\u3088\u3046\u306a\u30b5\u30fc\u30b8\u306f\u3001\u6a19\u6e96\u7684\u306a\u6f0f\u96fb\u906e\u65ad\u5668\u3067\u306f\u5384\u4ecb\u306a\u30c8\u30ea\u30c3\u30d7\u3092\u5f15\u304d\u8d77\u3053\u3057\u3001\u4e0d\u5fc5\u8981\u306a\u30c0\u30a6\u30f3\u30bf\u30a4\u30e0\u306b\u3064\u306a\u304c\u308a\u307e\u3059\u3002\u305d\u306e\u305f\u3081\u00a0VKL11B SI\u30b5\u30fc\u30b8\u514d\u75abRCCB<\/strong>\u00a0\u306f\u3001\u904e\u6e21\u96fb\u6d41\uff08\u6700\u59273kA 8\/20\u00b5s\uff09\u306b\u5bfe\u3059\u308b\u9ad8\u3044\u8010\u6027\u3092\u5099\u3048\u3066\u3044\u307e\u3059\u3002\u5371\u967a\u306a\u6b8b\u7559\u96fb\u6d41\u3068\u7121\u5bb3\u306a\u904e\u6e21\u30b5\u30fc\u30b8\u3092\u533a\u5225\u3059\u308b\u3088\u3046\u306b\u8a2d\u8a08\u3055\u308c\u3066\u304a\u308a\u3001\u30b5\u30fc\u30d3\u30b9\u306e\u7d99\u7d9a\u304c\u6700\u3082\u91cd\u8981\u306a\u8a2d\u5099\u306b\u6700\u9069\u3067\u3059\u3002.<\/p>\n\n\n\n The\u00a0VKL11B-G is a variant that features a short time-delay, often referred to as a “G-Type” (General use, time-delayed). It is designed to be more robust than an instantaneous RCD but faster than a fully selective S-Type. This characteristic provides a degree of immunity against transient surges without sacrificing protection speed entirely, making\u00a0VKL11B G \u5de5\u696d\u7528\u63a5\u5730\u4fdd\u8b77<\/strong>\u00a0\u306f\u3001\u6a5f\u5668\u306e\u7a81\u5165\u96fb\u6d41\u3084\u52d5\u4f5c\u30ea\u30fc\u30af\u96fb\u6d41\u304c\u5927\u304d\u304f\u306a\u308b\u53ef\u80fd\u6027\u306e\u3042\u308b\u591a\u304f\u306e\u7523\u696d\u7528\u304a\u3088\u3073\u5546\u696d\u7528\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306b\u9069\u3057\u305f\u30d0\u30e9\u30f3\u30b9\u306e\u53d6\u308c\u305f\u9078\u629e\u80a2\u3067\u3059\u3002.<\/p>\n\n\n\n \u9069\u5207\u306aRCCB\u3092\u9078\u629e\u3059\u308b\u3053\u3068\u306f\u3001\u91cd\u8981\u306a\u8a2d\u8a08\u4e0a\u306e\u6c7a\u5b9a\u4e8b\u9805\u3067\u3059\u3002\u4ee5\u4e0b\u306e\u8868\u3068\u30ac\u30a4\u30c9\u306f\u3001\u3053\u306e\u30d7\u30ed\u30bb\u30b9\u3092\u7c21\u7565\u5316\u3059\u308b\u305f\u3081\u306e\u3082\u306e\u3067\u3059\u3002.<\/p>\n\n\n\n \u3042\u306a\u305f\u306e\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306b\u9069\u3057\u305f\u30e2\u30c7\u30eb\u3092\u898b\u3064\u3051\u308b\u305f\u3081\u306b\u3001\u4ee5\u4e0b\u306e\u8cea\u554f\u306b\u5f93\u3063\u3066\u304f\u3060\u3055\u3044\uff1a<\/p>\n\n\n\n \u6b63\u3057\u3044\u53d6\u308a\u4ed8\u3051\u306f\u3001\u6b63\u3057\u3044\u88fd\u54c1\u9078\u629e\u3068\u540c\u3058\u304f\u3089\u3044\u91cd\u8981\u3067\u3059\u3002.<\/p>\n\n\n\n \u3088\u308a\u8907\u96d1\u3067\u96fb\u5b50\u7684\u306b\u99c6\u52d5\u3055\u308c\u308b\u4e16\u754c\u3078\u306e\u30b7\u30d5\u30c8\u306f\u3001\u96fb\u6c17\u5b89\u5168\u3078\u306e\u30a2\u30d7\u30ed\u30fc\u30c1\u306b\u3082\u4e26\u884c\u3057\u305f\u30b7\u30d5\u30c8\u3092\u8981\u6c42\u3057\u3066\u3044\u308b\u3002\u30bf\u30a4\u30d7A\u304a\u3088\u3073AC\u6f0f\u96fb\u906e\u65ad\u5668\u306f\u3001\u3088\u308a\u5358\u7d14\u306a\u56de\u8def\u3067\u306f\u307e\u3060\u6709\u7528\u3067\u3059\u304c\u3001\u6700\u65b0\u306e\u96fb\u529b\u5909\u63db\u6280\u8853\u3092\u542b\u3080\u8a2d\u5099\u306b\u306f\u3082\u306f\u3084\u5341\u5206\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u6ed1\u3089\u304b\u306a\u76f4\u6d41\u96fb\u6d41\u306b\u3088\u308b\u5931\u660e\u306e\u53ef\u80fd\u6027\u306f\u3001\u6b63\u3057\u304f\u6307\u5b9a\u3055\u308c\u305f\u6f0f\u96fb\u906e\u65ad\u5668\u306b\u3088\u3063\u3066\u306e\u307f\u8efd\u6e1b\u3067\u304d\u308b\u3001\u660e\u78ba\u304b\u3064\u73fe\u5728\u306e\u5371\u967a\u3092\u69cb\u6210\u3057\u3066\u3044\u307e\u3059\u3002 \u6b8b\u7559\u96fb\u6d41\u4fdd\u8b77<\/strong>.<\/p>\n\n\n\n cnkuanya VKL11B\u30b7\u30ea\u30fc\u30ba\u306f\u3001\u6280\u8853\u7684\u306b\u512a\u308c\u305f\u30bf\u30a4\u30d7B RCCB\u306e\u5b8c\u5168\u306a\u30dd\u30fc\u30c8\u30d5\u30a9\u30ea\u30aa\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002EV\u5145\u96fb\u5668\u306b\u5fc5\u8981\u306a\u7279\u6b8a\u306a\u4fdd\u8b77\u304b\u3089\u3001\u5927\u898f\u6a21\u306a\u7523\u696d\u30d7\u30e9\u30f3\u30c8\u306b\u5fc5\u8981\u306a\u5805\u7262\u306a\u9078\u629e\u6027\u307e\u3067\u3001\u5f53\u793e\u306e\u88fd\u54c1\u306f\u6700\u9ad8\u30ec\u30d9\u30eb\u306e\u5b89\u5168\u6027\u3068\u4fe1\u983c\u6027\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002\u6280\u8853\u3092\u7406\u89e3\u3057\u3001\u9069\u5207\u306a\u30d0\u30ea\u30a8\u30fc\u30b7\u30e7\u30f3\u3092\u9078\u629e\u3057\u3001\u8a2d\u7f6e\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\u306b\u5f93\u3046\u3053\u3068\u3067\u3001\u898f\u683c\u306b\u6e96\u62e0\u3059\u308b\u3060\u3051\u3067\u306a\u304f\u3001\u771f\u306b\u5b89\u5168\u306a\u96fb\u6c17\u30b7\u30b9\u30c6\u30e0\u3092\u8a2d\u8a08\u30fb\u69cb\u7bc9\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002.<\/p>\n\n\n\n For detailed specifications or consultation on your next project, we invite you to consult with cnkuanya’s engineering experts.<\/p>\n\n\n\n If you are not familiar with the selection of different types of RCCBs Type b variants,As engineers at cnkuanya, we are proud to stand at the forefront of electrical safety. The evolution of modern electrical environments, driven by non-linear loads like variable frequency drives (VFDs), photovoltaic (PV) systems, and electric vehicle (EV) chargers, has introduced a new class of electrical fault: the smooth DC residual current. This invisible threat can render traditional residual current devices (RCDs) ineffective, creating significant safety gaps in installations. This comprehensive guide is written for our professional peers\u2014the engineers, installers, and system designers who build and maintain the electrical infrastructure of our world. Here, we will […]<\/p>\n","protected":false},"author":4,"featured_media":2334,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[45],"tags":[],"class_list":["post-2333","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-dc-protection-safety"],"blocksy_meta":[],"_links":{"self":[{"href":"https:\/\/cnkuangya.com\/ja\/wp-json\/wp\/v2\/posts\/2333","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cnkuangya.com\/ja\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cnkuangya.com\/ja\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/cnkuangya.com\/ja\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/cnkuangya.com\/ja\/wp-json\/wp\/v2\/comments?post=2333"}],"version-history":[{"count":1,"href":"https:\/\/cnkuangya.com\/ja\/wp-json\/wp\/v2\/posts\/2333\/revisions"}],"predecessor-version":[{"id":2337,"href":"https:\/\/cnkuangya.com\/ja\/wp-json\/wp\/v2\/posts\/2333\/revisions\/2337"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cnkuangya.com\/ja\/wp-json\/wp\/v2\/media\/2334"}],"wp:attachment":[{"href":"https:\/\/cnkuangya.com\/ja\/wp-json\/wp\/v2\/media?parent=2333"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cnkuangya.com\/ja\/wp-json\/wp\/v2\/categories?post=2333"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cnkuangya.com\/ja\/wp-json\/wp\/v2\/tags?post=2333"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}\u30c7\u30a3\u30fc\u30d7\u30fb\u30c0\u30a4\u30d6\u305d\u306e\u00a0VKL11B<\/a>\u00a0\u30b7\u30ea\u30fc\u30ba\u30d0\u30ea\u30a8\u30fc\u30b7\u30e7\u30f3<\/h3>\n\n\n\n
VKL11B+\uff08\u5f37\u5316\u578b\uff09<\/strong><\/h4>\n\n\n\n
\n
VKL11B-HP\uff08\u30cf\u30a4\u30d1\u30ef\u30fc\uff09<\/strong><\/h4>\n\n\n\n
\n
VKL11B-PV (\u592a\u967d\u5149\u767a\u96fb)<\/strong><\/h4>\n\n\n\n
\n
VKL11B-EV\uff08\u96fb\u6c17\u81ea\u52d5\u8eca\uff09<\/strong><\/h4>\n\n\n\n
\n
VKL11B-MI\uff08\u30e1\u30c7\u30a3\u30ab\u30eb\u30fb\u30a2\u30a4\u30bd\u30ec\u30fc\u30b7\u30e7\u30f3\uff09<\/strong><\/h4>\n\n\n\n
\n
VKL11B-S\uff08\u9078\u629e\uff09<\/strong><\/h4>\n\n\n\n
\n
VKL11B-SI\uff08\u30b5\u30fc\u30b8\u30fb\u30a4\u30df\u30e5\u30fc\u30f3\uff09<\/strong><\/h4>\n\n\n\n
\n
VKL11B-G\uff08\u7523\u696d\u7528\uff09<\/strong><\/h4>\n\n\n\n
\n
\u6bd4\u8f03\u30fb\u9078\u629e\u30ac\u30a4\u30c9<\/h3>\n\n\n\n
\u56f31\uff1a\u6f0f\u96fb\u906e\u65ad\u5668\u30bf\u30a4\u30d7\u691c\u51fa\u80fd\u529b<\/strong><\/h4>\n\n\n\n
\u6f0f\u96fb\u906e\u65ad\u5668\u30bf\u30a4\u30d7<\/th> \u6b63\u5f26\u6ce2\u4ea4\u6d41<\/th> \u8108\u52d5\u3059\u308bDC<\/th> \u30b9\u30e0\u30fc\u30baDC<\/th> \u9ad8\u5468\u6ce2\u4ea4\u6d41<\/th><\/tr> \u30bf\u30a4\u30d7AC<\/strong><\/td> \u2705<\/td> \u274c<\/td> \u274c<\/td> \u274c<\/td><\/tr> \u30bf\u30a4\u30d7A<\/strong><\/td> \u2705<\/td> \u2705<\/td> \u274c<\/td> \u274c<\/td><\/tr> \u30bf\u30a4\u30d7B<\/strong><\/td> \u2705<\/td> \u2705<\/td> \u2705<\/td> \u2705\uff081kHz \u307e\u3067\uff09<\/td><\/tr> \u30bf\u30a4\u30d7B<\/strong><\/td> \u2705<\/td> \u2705<\/td> \u2705<\/td> \u2705 (20kHz\u307e\u3067)<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n \u56f32\uff1aVKL11B\u30d0\u30ea\u30a2\u30f3\u30c8\u30fb\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u30de\u30c3\u30d7<\/strong><\/h4>\n\n\n\n
\u30d0\u30ea\u30a2\u30f3\u30c8<\/th> \u4e3b\u306a\u7528\u9014<\/th> \u4e3b\u306a\u7279\u5fb4<\/th><\/tr> VKL11B+<\/strong><\/td> \u5c06\u6765\u3092\u898b\u636e\u3048\u305f\u5546\u696d\u65bd\u8a2d\uff0f\u30c7\u30fc\u30bf\u30bb\u30f3\u30bf\u30fc<\/td> \u62e1\u5f35\u5468\u6ce2\u6570\u691c\u51fa\uff0820kHz\uff09<\/td><\/tr> VKL11B-HP<\/strong><\/td> \u30cf\u30a4\u30d1\u30ef\u30fc\u7523\u696d\u6a5f\u68b0<\/td> \u4e09\u76f8VFD\u7528\u306b\u6700\u9069\u5316<\/td><\/tr> VKL11B-PV<\/strong><\/td> \u592a\u967d\u5149\u767a\u96fb\u8a2d\u5099<\/td> \u30a4\u30f3\u30d0\u30fc\u30bf\u306eDC\u6545\u969c\u304b\u3089\u4fdd\u8b77<\/td><\/tr> VKL11B-EV<\/strong><\/td> EV\u5145\u96fb\u30b9\u30c6\u30fc\u30b7\u30e7\u30f3<\/td> \u76f4\u6d41\u6f0f\u96fb\u306b\u3088\u308b\u6f0f\u96fb\u906e\u65ad\u5668\u306e\u76ee\u304f\u3089\u307e\u3057\u3092\u9632\u3050<\/td><\/tr> VKL11B-MI<\/strong><\/td> \u533b\u7642\u7528\u753b\u50cf\u6a5f\u5668<\/td> \u91cd\u8981\u306a\u30b7\u30b9\u30c6\u30e0\u306e\u305f\u3081\u306e\u9ad8\u3044\u30a4\u30df\u30e5\u30cb\u30c6\u30a3<\/td><\/tr> VKL11B-S<\/strong><\/td> \u4e3b\u306a\u5206\u96fb\u76e4<\/td> \u9078\u629e\u6027\u306e\u305f\u3081\u306e\u6642\u9593\u9045\u5ef6<\/td><\/tr> VKL11B-SI<\/strong><\/td> \u904e\u6e21\u30b5\u30fc\u30b8\u306e\u3042\u308b\u74b0\u5883<\/td> \u9ad8\u30b5\u30fc\u30b8\u8010\u6027\uff083kA\uff09<\/td><\/tr> VKL11B-G<\/strong><\/td> \u4e00\u822c\u7523\u696d\u7528\u56de\u8def<\/td> \u30ed\u30d0\u30b9\u30c8\u6027\u306e\u305f\u3081\u306e\u77ed\u3044\u6642\u9593\u9045\u5ef6<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n \u30d0\u30ea\u30a2\u30f3\u30c8<\/th> \u4e3b\u306a\u7528\u9014<\/th> \u4e3b\u306a\u7279\u5fb4<\/th><\/tr> VKL11B+<\/strong><\/td> \u5c06\u6765\u3092\u898b\u636e\u3048\u305f\u5546\u696d\u65bd\u8a2d\uff0f\u30c7\u30fc\u30bf\u30bb\u30f3\u30bf\u30fc<\/td> \u62e1\u5f35\u5468\u6ce2\u6570\u691c\u51fa\uff0820kHz\uff09<\/td><\/tr> VKL11B-HP<\/strong><\/td> \u30cf\u30a4\u30d1\u30ef\u30fc\u7523\u696d\u6a5f\u68b0<\/td> \u4e09\u76f8VFD\u7528\u306b\u6700\u9069\u5316<\/td><\/tr> VKL11B-PV<\/strong><\/td> \u592a\u967d\u5149\u767a\u96fb\u8a2d\u5099<\/td> \u30a4\u30f3\u30d0\u30fc\u30bf\u306eDC\u6545\u969c\u304b\u3089\u4fdd\u8b77<\/td><\/tr> VKL11B-EV<\/strong><\/td> EV\u5145\u96fb\u30b9\u30c6\u30fc\u30b7\u30e7\u30f3<\/td> \u76f4\u6d41\u6f0f\u96fb\u306b\u3088\u308b\u6f0f\u96fb\u906e\u65ad\u5668\u306e\u76ee\u304f\u3089\u307e\u3057\u3092\u9632\u3050<\/td><\/tr> VKL11B-MI<\/strong><\/td> \u533b\u7642\u7528\u753b\u50cf\u6a5f\u5668<\/td> \u91cd\u8981\u306a\u30b7\u30b9\u30c6\u30e0\u306e\u305f\u3081\u306e\u9ad8\u3044\u30a4\u30df\u30e5\u30cb\u30c6\u30a3<\/td><\/tr> VKL11B-S<\/strong><\/td> \u4e3b\u306a\u5206\u96fb\u76e4<\/td> \u9078\u629e\u6027\u306e\u305f\u3081\u306e\u6642\u9593\u9045\u5ef6<\/td><\/tr> VKL11B-SI<\/strong><\/td> \u904e\u6e21\u30b5\u30fc\u30b8\u306e\u3042\u308b\u74b0\u5883<\/td> \u9ad8\u30b5\u30fc\u30b8\u8010\u6027\uff083kA\uff09<\/td><\/tr> VKL11B-G<\/strong><\/td> \u4e00\u822c\u7523\u696d\u7528\u56de\u8def<\/td> \u30ed\u30d0\u30b9\u30c8\u6027\u306e\u305f\u3081\u306e\u77ed\u3044\u6642\u9593\u9045\u5ef6<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n \u56f33\uff1aVKL11B\u5909\u7570\u4f53\u306e\u9078\u3073\u65b9<\/strong><\/h4>\n\n\n\n
\n
\n
\n
\n
\n
\u8a2d\u7f6e\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\u3068\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9<\/h3>\n\n\n\n
\n
\u7d50\u8ad6<\/h3>\n\n\n\n
![\"\"](\"https:\/\/cnkuangya.com\/wp-content\/uploads\/2026\/01\/ed026cf9eee243f12ab4e7270c9e5d872143a1330c3f44f7dbd6d16e318c295f-687x1024.jpg\")
<\/figure>","protected":false},"excerpt":{"rendered":"