{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1112-5EF32-0KC0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1112-5EF32-0KC0","canonicalUrl":"https://aoctrl.com/siemens/3VA1112-5EF32-0KC0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1112-5EF32-0KC0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1112-5EF32-0KC0, molded case circuit breaker, 3-pole, 125 A, TM240 thermal-magnetic release, shunt trip (STL), 2 auxiliary switches HQ, line protection version, breaking capacity 187 kA at 240 V.","salesMarkdown":"Breaking capacity is the headline here: 187 kA at 240 V AC, 121 kA at 415 V, 75.6 kA at 440 V, and 17 kA at both 500 V and 690 V. The 3VA1112-5EF32-0KC0 measures 130 mm high, 76.2 mm wide, and 70 mm deep — a standard 3-pole MCCB footprint that drops into most SENTRON mounting plates and DIN-rail adapters without panel modification. The current derating curve starts above 55 °C — at 55 °C it still carries 122 A, at 70 °C it derates to 114 A. For a 125 A nominal load in a 50 °C panel, no derating is needed. ## Auxiliary Release and Switching The shunt trip (STL) design allows remote tripping via a control signal — typical for emergency-stop circuits or supervisory shutdown. The 2 auxiliary switches (HQ version) provide normally-open and normally-closed contacts for status monitoring without additional interposing relays.","metaTitle":"Siemens 3VA1112-5EF32-0KC0 SENTRON MCCB, 125 A, 3-Pole, 187","metaDescription":"Siemens SENTRON 3VA1112-5EF32-0KC0 molded case circuit breaker, 125 A, 3-pole, TM240 release, shunt trip. Breaking capacity 187 kA at 240 V. Current production. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Molded Case Circuit Breakers (MCCB)"],"specifications":{"Depth":"70 mm","Width":"76.2 mm","Height":"130 mm","at 240 V":"187 kA","at 415 V":"121 kA","at 440 V":"75.6 kA","at 500 V":"17 kA","at 690 V":"17 kA","at 40 °C":"125 A","at 45 °C":"125 A","at 50 °C":"125 A","at 55 °C":"122 A","at 60 °C":"120 A","at 65 °C":"117 A","at 70 °C":"114 A","Depth [In]":"2.76 in","Width [In]":"3 in","Height [In]":"5.12 in","Trip Indicator":"No","Number Of Poles":"3","Product version":"Line protection","Voltage Trigger":"Yes","lifecycle_stage":"current","Product Brand Name":"SENTRON","Product Designation":"Molded case circuit breaker","Undervoltage Release":"No","Communication Function":"No","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","power loss [W] / maximum":"28.1 W","Auxiliary contact version":"2 auxiliary switches HQ","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","rated insulation voltage Ui":"800 V","Of The Supplied Basic Switch":"3VA11125EF320AA0","Design Of The Auxiliary Release":"shunt trip (STL)","Ground-Fault Monitoring Version":"Without","Design Of The Overcurrent Release":"TM240","Design Of Short-Circuit Protection":"For switching power values in DC networks, see the 3VA molded case circuit breaker device manual; link to be found under Service & Support in the last chapter","protection class IP / on the front":"IP40","Of The Integrated Auxiliary Trip Unit":"3VA9688-0BL33","operating voltage / at AC / rated value":"690 V","Max. rated operational voltage Ue with DC":"500 V","reference code / according to IEC 81346-2":"Q","Product Extension / Optional / Motor Drive":"Yes","Neutral conductors / upgradeable/retrofittable":"No","Protection Function Of The Overcurrent Release":"LI","number of CO contacts / for auxiliary contacts":"2","Of The Integrated Auxiliary Switch/Alarm Switch":"3VA9988-0AA12","Switching Capacity Class Of The Circuit Breaker":"M","Mechanical Service Life (Switching Cycles) / Typical":"20 000","Type Of Electrical Connection / For Main Current Circuit":"nut keeper kit on both ends","Arrangement Of Electrical Connectors / For Main Current Circuit":"Front terminal","Type of connectable conductor cross-section, connection screw, width x thickness , max.":"17 x 6,5 mm","Type of connectable conductor cross-section, connection screw, width x thickness , min.":"12 x 1 mm"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=169436&mlfb=3VA1112-5EF32-0KC0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1112-5EF32-0KC0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA1112-5EF32-0KC0 and how do I get a price?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Submit an RFQ for current pricing and availability confirmation at quote time."},{"question":"What is 3VA1112-5EF32-0KC0's breaking capacity at 240 V?","answer":"The breaking capacity is 187 kA at 240 V AC, with 121 kA at 415 V, 75.6 kA at 440 V, and 17 kA at both 500 V and 690 V."},{"question":"Does this breaker include a shunt trip?","answer":"Yes, it is equipped with a shunt trip (STL) auxiliary release for remote tripping, plus 2 auxiliary switches (HQ configuration) for status feedback."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1112-5EF32-0KC0","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/siemens/3VA1112-5EF32-0KC0 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-09-02T08:15:54.622Z","lastPublished":"2026-09-02T08:15:54.622Z","indexable":true}}