{"id":8914,"date":"2026-10-22T07:26:19","date_gmt":"2026-10-22T07:26:19","guid":{"rendered":"https:\/\/www.simplybuyglobal.com\/?post_type=product&#038;p=8914"},"modified":"2026-10-22T07:27:44","modified_gmt":"2026-10-22T07:27:44","slug":"schneider-electric-50440-vigipact-ma120-closed-toroid-120-mm-inner-diameter-250-a-type-a-1-1000-ratio","status":"publish","type":"product","link":"https:\/\/www.simplybuyglobal.com\/ja\/product\/schneider-electric-50440-vigipact-ma120-closed-toroid-120-mm-inner-diameter-250-a-type-a-1-1000-ratio\/","title":{"rendered":"Schneider Electric 50440 VigiPacT MA120 Closed Toroid \u2013 120 mm Inner Diameter, 250 A, Type A, 1\/1000 Ratio"},"content":{"rendered":"<h2>\u88fd\u54c1\u8aac\u660e<\/h2>\n<p>The Schneider Electric 50440 is a Type A closed toroid from the VigiPacT range, designed as a residual current sensor for earth leakage protection and insulation fault monitoring. It features a 120 mm inner diameter and a 250 A rated operational current, with a transformer ratio of 1\/1000 for precise residual current measurement. The toroid is compatible with VigiPacT RH-series residual current relays and Vigilohm insulation fault locators, enabling continuous monitoring of the power supply and the relay\/toroid link. With an 85 kA\/0.5 s short-time withstand current, 1000 V rated insulation voltage, and overvoltage category IV, it delivers reliable performance in demanding industrial and commercial power distribution systems.<\/p>\n<h2>\u6a19\u6e96\u6a5f\u80fd<\/h2>\n<ul>\n<li><strong>Type A Residual Current Sensing:<\/strong> Detects AC and pulsating DC residual currents, meeting the requirements of modern earth leakage protection for equipment with electronic loads.<\/li>\n<li><strong>120 mm Inner Diameter:<\/strong> Accommodates cable outer diameters up to 60 mm and maximum conductor cross-sections up to 240 mm\u00b2, simplifying installation around large cables and busbars.<\/li>\n<li><strong>250 A Rated Operational Current:<\/strong> Supports continuous monitoring of circuits up to 250 A, suitable for feeder and branch protection in industrial and commercial distribution boards.<\/li>\n<li><strong>1\/1000 Transformer Ratio:<\/strong> Provides precise and consistent residual current measurement for accurate coordination with VigiPacT protection relays.<\/li>\n<li><strong>85 kA\/0.5 s Short-Time Withstand:<\/strong> Withstands high fault currents without damage, ensuring reliability in demanding power distribution environments.<\/li>\n<li><strong>Reinforced Insulation (Overvoltage Category IV):<\/strong> Offers enhanced dielectric strength and safety for use at the origin of installations and in harsh electrical environments.<\/li>\n<li><strong>Versatile Mounting Options:<\/strong> Supports fixed mounting on cables, plain or slotted backplates, profiled sheet metal, and clip-on DIN rail mounting for flexible panel integration.<\/li>\n<\/ul>\n<h2>\u6280\u8853\u4ed5\u69d8<\/h2>\n<table>\n<thead>\n<tr>\n<th>\u30d1\u30e9\u30e1\u30fc\u30bf<\/th>\n<th>\u4fa1\u5024<\/th>\n<\/tr>\n<tbody>\n<tr>\n<td>\u30e1\u30fc\u30ab\u30fc<\/td>\n<td>\u30b7\u30e5\u30ca\u30a4\u30c0\u30fc\u30a8\u30ec\u30af\u30c8\u30ea\u30c3\u30af<\/td>\n<\/tr>\n<tr>\n<td>\u30e2\u30c7\u30eb<\/td>\n<td>50440<\/td>\n<\/tr>\n<tr>\n<td>\u30b7\u30ea\u30fc\u30ba<\/td>\n<td>\u30d3\u30b8\u30d1\u30c3\u30af<\/td>\n<\/tr>\n<tr>\n<td>\u30c7\u30d0\u30a4\u30b9\u306e\u7565\u79f0<\/td>\n<td>MA120<\/td>\n<\/tr>\n<tr>\n<td>\u88fd\u54c1\u30bf\u30a4\u30d7<\/td>\n<td>Earth Leakage Current Sensor (Closed Toroid)<\/td>\n<\/tr>\n<tr>\n<td>Current Sensor Type<\/td>\n<td>Type A closed toroid<\/td>\n<\/tr>\n<tr>\n<td>\u5b9a\u683c\u52d5\u4f5c\u96fb\u6d41\uff08Ie\uff09<\/td>\n<td>250A<\/td>\n<\/tr>\n<tr>\n<td>Transformer Ratio<\/td>\n<td>1\/1000<\/td>\n<\/tr>\n<tr>\n<td>Inner Diameter<\/td>\n<td>120 mm<\/td>\n<\/tr>\n<tr>\n<td>Rated Short-Time Withstand Current (Icw)<\/td>\n<td>85 kA for 0.5 s<\/td>\n<\/tr>\n<tr>\n<td>\u5b9a\u683c\u7d76\u7e01\u96fb\u5727\uff08Ui\uff09<\/td>\n<td>1000V<\/td>\n<\/tr>\n<tr>\n<td>\u5b9a\u683c\u30a4\u30f3\u30d1\u30eb\u30b9\u8010\u96fb\u5727\uff08Uimp\uff09<\/td>\n<td>12 kV<\/td>\n<\/tr>\n<tr>\n<td>\u904e\u96fb\u5727\u30ab\u30c6\u30b4\u30ea<\/td>\n<td>IV<\/td>\n<\/tr>\n<tr>\n<td>\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5468\u6ce2\u6570<\/td>\n<td>45\u2026440 Hz<\/td>\n<\/tr>\n<tr>\n<td>\u5bf8\u6cd5\uff08\u9ad8\u3055\u00d7\u5e45\u00d7\u5965\u884c\uff09<\/td>\n<td>164 mm \u00d7 190 mm \u00d7 44 mm<\/td>\n<\/tr>\n<tr>\n<td>\u6b63\u5473\u91cd\u91cf<\/td>\n<td>0.59 kg<\/td>\n<\/tr>\n<tr>\n<td>\u5468\u56f2\u52d5\u4f5c\u6e29\u5ea6<\/td>\n<td>-35\u2026+70 \u00b0C<\/td>\n<\/tr>\n<tr>\n<td>\u6a19\u6e96<\/td>\n<td>IEC 60947-2<\/td>\n<\/tr>\n<\/tbody>\n<\/table>","protected":false},"excerpt":{"rendered":"<p dir=\"ltr\"><strong>\u30e1\u30fc\u30ab\u30fc:<\/strong> \u30b7\u30e5\u30ca\u30a4\u30c0\u30fc\u30a8\u30ec\u30af\u30c8\u30ea\u30c3\u30af<br \/>\n<strong>\u30e2\u30c7\u30eb\uff1a<\/strong> 50440<br \/>\n<strong>\u30bf\u30a4\u30d7\uff1a<\/strong> Earth Leakage Current Sensor (Closed Toroid)<br \/>\n<strong>\u30b7\u30ea\u30fc\u30ba\uff1a<\/strong> VigiPacT MA120<br \/>\n<strong>\u5b9a\u683c\u96fb\u6d41:<\/strong> 250A<br \/>\n<strong>Inner Diameter:<\/strong> 120 mm<br \/>\n<strong>Transformer Ratio:<\/strong> 1\/1000<br \/>\n<strong>Current Sensor Type:<\/strong> \u30bf\u30a4\u30d7A<\/p>","protected":false},"featured_media":8916,"template":"","meta":[],"product_brand":[],"product_cat":[104,19,68,103,102,105,112,101,100,107,106,81,111,113],"product_tag":[],"class_list":["post-8914","product","type-product","status-publish","has-post-thumbnail","product_cat-air-compressor","product_cat-circuit-breaker","product_cat-control-relays-relay","product_cat-elevator-and-crane","product_cat-fan-and-pumps","product_cat-hvac","product_cat-iec-standards","product_cat-industrial-process","product_cat-motor-control-application","product_cat-new-energy","product_cat-oil-gas","product_cat-schneider","product_cat-standard","product_cat-ul-standards","first","instock","shipping-taxable","product-type-simple"],"_links":{"self":[{"href":"https:\/\/www.simplybuyglobal.com\/ja\/wp-json\/wp\/v2\/product\/8914","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.simplybuyglobal.com\/ja\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/www.simplybuyglobal.com\/ja\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.simplybuyglobal.com\/ja\/wp-json\/wp\/v2\/media\/8916"}],"wp:attachment":[{"href":"https:\/\/www.simplybuyglobal.com\/ja\/wp-json\/wp\/v2\/media?parent=8914"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/www.simplybuyglobal.com\/ja\/wp-json\/wp\/v2\/product_brand?post=8914"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.simplybuyglobal.com\/ja\/wp-json\/wp\/v2\/product_cat?post=8914"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.simplybuyglobal.com\/ja\/wp-json\/wp\/v2\/product_tag?post=8914"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}