{"title":"Intelligent MCCB Controllers 32A-1600A | Wanlong Electric","description":"\u003ch2\u003eIntelligent Molded Case Circuit Breaker (MCCB) Controllers\u003c\/h2\u003e\u003cp\u003eWanlong Electric's intelligent MCCB controllers are the core electronic trip units integrated within molded case circuit breakers. They replace traditional thermal-magnetic elements with microprocessor-based digital sampling and logic, delivering precise protection for low-voltage distribution systems rated 32A to 1600A at up to 690V AC.\u003c\/p\u003e\u003ch3\u003eWhat Is an Intelligent MCCB Controller?\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCore technology:\u003c\/strong\u003e MCU-based electronic trip unit with real-time current\/voltage sampling and programmable protection curves\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKey components:\u003c\/strong\u003e Current transformers (CT), signal conditioning circuits, MCU processing unit, trip drive circuit, and HMI\/communication interface\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSplit-type design available:\u003c\/strong\u003e Controller physically separated from the breaker body for flexible installation\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eKey Protection Functions\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eLong-time overload protection (adjustable)\u003c\/li\u003e\n\u003cli\u003eShort-time short-circuit protection (adjustable)\u003c\/li\u003e\n\u003cli\u003eInstantaneous short-circuit protection\u003c\/li\u003e\n\u003cli\u003eGround \/ leakage fault protection\u003c\/li\u003e\n\u003cli\u003eUnder\/over-voltage protection\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eAdvanced Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-accuracy metering:\u003c\/strong\u003e Real-time display of current, voltage, and power with ±0.5%–±1% accuracy\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSmart communication:\u003c\/strong\u003e Built-in Modbus \/ RS485 supporting remote four-telemetry (control, signaling, measurement, adjustment) and fault recording\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eZone Selective Interlocking (ZSI):\u003c\/strong\u003e Available on premium models to prevent upstream tripping and improve supply reliability\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eIntelligent vs. Traditional Thermal-Magnetic\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTraditional:\u003c\/strong\u003e Fixed characteristics via bimetal strip and electromagnetic coil — low accuracy, no communication\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntelligent:\u003c\/strong\u003e Programmable protection curves, digital accuracy, remote monitoring — ideal for industrial power distribution, renewable energy, and data centers\u003c\/li\u003e\n\u003c\/ul\u003e","products":[{"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"},{"product_id":"st31m3-series-intelligent-mccb-trip-unit","title":"ST31M3 Series Intelligent MCCB Trip Unit","description":"\u003ch2\u003eST31M3 Series – Intelligent MCCB Trip Unit\u003c\/h2\u003e\u003ch3\u003eOverview\u003c\/h3\u003e\u003cp\u003eThe ST31M3 Series is an intelligent protection core unit designed for use with CM1 and CM3 series molded case circuit breakers (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\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\u003cli\u003eOverload alarm without trip\u003c\/li\u003e\n\u003cli\u003eRemote shunt trip\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\u003eUSB communication port\u003c\/li\u003e\n\u003cli\u003eAccessory communication port\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eM-type:\u003c\/strong\u003e Parameters set via rotary switch – intuitive and convenient\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eH-type:\u003c\/strong\u003e Parameters set via handheld programmer; supports measurement accuracy calibration and historical fault inquiry\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 100A, 250A, 400–630A, 800A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRated current:\u003c\/strong\u003e 32A – 800A\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":44010303520834,"sku":null,"price":98.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0688\/1221\/0242\/files\/ST31M3.webp?v=1784012815"},{"product_id":"st130-st140-series-intelligent-mccb-controller","title":"ST130 \/ ST140 Series Intelligent MCCB Controller","description":"\u003ch2\u003eST130 \/ ST140 Series – Intelligent MCCB Controller\u003c\/h2\u003e\u003ch3\u003eOverview\u003c\/h3\u003e\u003cp\u003eThe ST130 and ST140 intelligent controllers are the core components of smart molded case circuit breakers (MCCB). Suitable for AC 50Hz systems with rated insulation voltage up to 690V and rated operating currents from 32A to 1600A, they protect low-voltage distribution lines and power equipment against overload, short-circuit, and ground fault hazards. They support remote “four-telemetry” functions (remote control, signaling, measurement, and adjustment) via communication interface.\u003c\/p\u003e\u003ch3\u003eModel Classification\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBy frame rating \u0026amp; current:\u003c\/strong\u003e ST130 covers 32A–1600A; ST140 covers 250A–800A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBy poles:\u003c\/strong\u003e 3-pole and 4-pole\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBy type:\u003c\/strong\u003e M-type (standard) \/ H-type (communication)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBy application:\u003c\/strong\u003e Distribution \u0026amp; motor protection \/ Generator protection (suffix F)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFunction Configuration\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eFunction\u003c\/th\u003e\n\u003cth\u003eM-Type\u003c\/th\u003e\n\u003cth\u003eH-Type\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eLong-time overload protection\u003c\/td\u003e\n\u003ctd\u003e✓\u003c\/td\u003e\n\u003ctd\u003e✓\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShort-time short-circuit protection\u003c\/td\u003e\n\u003ctd\u003e✓\u003c\/td\u003e\n\u003ctd\u003e✓\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInstantaneous short-circuit protection\u003c\/td\u003e\n\u003ctd\u003e✓\u003c\/td\u003e\n\u003ctd\u003e✓\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGround \/ leakage fault protection\u003c\/td\u003e\n\u003ctd\u003eOptional\u003c\/td\u003e\n\u003ctd\u003eOptional\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOverload pre-alarm\u003c\/td\u003e\n\u003ctd\u003e✓\u003c\/td\u003e\n\u003ctd\u003e✓\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLoad current bar indicator\u003c\/td\u003e\n\u003ctd\u003e✓\u003c\/td\u003e\n\u003ctd\u003e✓\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThermal memory\u003c\/td\u003e\n\u003ctd\u003eOptional\u003c\/td\u003e\n\u003ctd\u003eOptional\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFault memory\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003ctd\u003e✓\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDigital parameter setting (ST programmer)\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003ctd\u003e✓\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical output\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003ctd\u003e✓\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRS485 \/ Modbus communication\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003ctd\u003e✓\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch3\u003eRated Parameters\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRated insulation voltage:\u003c\/strong\u003e 690V AC, 50Hz\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRated current:\u003c\/strong\u003e 32A – 1600A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFrame ratings:\u003c\/strong\u003e 100A \/ 250A \/ 400A \/ 630A \/ 800A \/ 1600A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCommunication:\u003c\/strong\u003e RS485, Modbus protocol\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":44011204640834,"sku":null,"price":98.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0688\/1221\/0242\/files\/ST130.webp?v=1784013451"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0688\/1221\/0242\/collections\/4_4b4a1654-74a3-4878-8ca0-a63f5a79012c.jpg?v=1784018261","url":"https:\/\/wanlongelectric.com\/zh\/collections\/intelligent-mccb-controllers.oembed","provider":"Wan Long Electric Group Co., Ltd.","version":"1.0","type":"link"}