{"product_id":"st31cs-series-intelligent-mccb-trip-unit","title":"ST31CS Series Intelligent MCCB Trip Unit","description":"\u003ch2\u003eST31CS Series – Intelligent MCCB Trip Unit\u003c\/h2\u003e\u003ch3\u003eOverview\u003c\/h3\u003e\u003cp\u003eThe ST31CS Series is an intelligent protection core unit designed for use with the C\u0026amp;S WinBreak1 molded case circuit breaker (MCCB). It provides comprehensive distribution protection, safeguarding circuits and power equipment against overload, short-circuit, and ground fault hazards.\u003c\/p\u003e\u003ch3\u003eProtection Functions\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eLong-time overload protection\u003c\/li\u003e\n\u003cli\u003eShort-time short-circuit protection\u003c\/li\u003e\n\u003cli\u003eInstantaneous short-circuit protection\u003c\/li\u003e\n\u003cli\u003eGround fault protection\u003c\/li\u003e\n\u003cli\u003eOverload pre-alarm\u003c\/li\u003e\n\u003cli\u003eNeutral conductor protection\u003c\/li\u003e\n\u003cli\u003ePhase unbalance protection\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eAuxiliary Functions\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eFault trip\u003c\/li\u003e\n\u003cli\u003eOverload pre-alarm\u003c\/li\u003e\n\u003cli\u003eGround fault alarm\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCommunication\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eMODBUS protocol\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eUser Interface\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003ePower indicator\u003c\/li\u003e\n\u003cli\u003ePre-alarm indicator\u003c\/li\u003e\n\u003cli\u003eTrip function test port\u003c\/li\u003e\n\u003cli\u003eAccessory communication port\u003c\/li\u003e\n\u003cli\u003eLCD type: parameters set via keypad with LCD display; historical fault records accessible\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eRated Parameters\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower supply:\u003c\/strong\u003e CT self-powered; operates when 3-phase current \u0026gt; 0.2In or single-phase current \u0026gt; 0.4In\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFrame rating:\u003c\/strong\u003e 250A, 630A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRated current:\u003c\/strong\u003e 125A – 630A\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eStandards\u003c\/h3\u003e\u003cp\u003eGB14048.2  |  IEC60947  |  GB\/T22710\u003c\/p\u003e","brand":"Wan Long Electric Group Co., Ltd.","offers":[{"title":"Default Title","offer_id":44007500841026,"sku":null,"price":89.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0688\/1221\/0242\/files\/ad50839eee451318dd01611df2947b0a.webp?v=1784011590","url":"https:\/\/wanlongelectric.com\/zh\/products\/st31cs-series-intelligent-mccb-trip-unit","provider":"Wan Long Electric Group Co., Ltd.","version":"1.0","type":"link"}