{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1112-4EF32-0KC0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1112-4EF32-0KC0","canonicalUrl":"https://aoctrl.com/siemens/3VA1112-4EF32-0KC0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1112-4EF32-0KC0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1112-4EF32-0KC0, Molded case circuit breaker, 3-pole, 125 A, line protection, TM240 thermal-magnetic release, 121 kA at 240 V.","salesMarkdown":"## Breaking capacity — the real-world fault-interrupting muscle The 3VA1112-4EF32-0KC0: This MCCB delivers 121 kA at 240 V, 75.6 kA at 415 V, 52.5 kA at 440 V, and 11.9 kA at 690 V. Those are the maximum prospective fault currents it can safely clear at each voltage level. The 125 A rating holds flat from 40 °C through 50 °C ambient, then derates to 120 A at 55 °C, 117.5 A at 60 °C, 115 A at 65 °C, and 112.5 A at 70 °C. ## Integrated accessories and release options The shunt trip lets a remote signal — from an E-stop, a safety relay, or a PLC output — electrically trip the breaker. ## Environmental and endurance specs","metaTitle":"Siemens 3VA1112-4EF32-0KC0 SENTRON MCCB, 125 A, 3-Pole, Line","metaDescription":"Siemens SENTRON 3VA1112-4EF32-0KC0 molded case circuit breaker, 125 A rated continuous current, 3-pole, line protection version with TM240 release. Breaking capacity 121 kA at 240","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":"121 kA","at 415 V":"75.6 kA","at 440 V":"52.5 kA","at 690 V":"11.9 kA","at 40 °C":"125 A","at 45 °C":"125 A","at 50 °C":"125 A","at 55 °C":"120 A","at 60 °C":"117.5 A","at 65 °C":"115 A","at 70 °C":"112.5 A","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","Latching - endurance":"15 000","Undervoltage Release":"No","Communication Function":"No","Phase failure detection":"No","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","Auxiliary contact version":"2 auxiliary switches HQ","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","Rated continuous current Iu":"125 A","Rated insulation voltage Ui":"800 V","Design of the auxiliary release":"Shunt trip (STL)","Ground fault monitoring version":"Without","Of The Integrated Auxiliary Trip":"3VA9688-0BL33","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","Reference code / acc. to DIN EN 81346-2":"Q","Adjustable response value time / tr max.":"1","Adjustable response value time / tr min.":"1","Max. rated operational voltage Ue with DC":"500 V","Undervoltage Release With Leading Contact":"No","Product extension / optional / motor drive":"Yes","Adjustable response value current / Ir max.":"125 A","Adjustable response value current / li max.":"1 250 A","Adjustable response value current / li min.":"625 A","Adjustable response value current / lr min.":"88 A","Neutral conductors / upgradeable/retrofittable":"No","Number of CO contacts / for auxiliary contacts":"2","Protective function of the overcurrent release":"LI","Of The Integrated Auxiliary Switch/Alarm Switch":"3VA9988-0AA12","Switching capacity class of the circuit breaker":"S","Max. rated operational current of the frame size":"160 A","Max. rated operational voltage Ue with AC 50/60Hz":"690 V","Type of electrical connection / for main current circuit":"lug terminal","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","Type of connectable conductor cross-section, connection screw, width x thickness , min.":"12 x 0"}},"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=283528&mlfb=3VA1112-4EF32-0KC0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1112-4EF32-0KC0/alternatives.json"},"ai":{"faq":[{"question":"What is 3VA1112-4EF32-0KC0's listed depth (70 mm) on this component line?","answer":"The depth is 70 mm, width 76.2 mm, height 130 mm."},{"question":"What is 3VA1112-4EF32-0KC0's listed width (76.2 mm) on this component line?","answer":"The width is 76.2 mm, depth 70 mm, height 130 mm."},{"question":"Will 3VA1112-4EF32-0KC0 drop into a panel that was specified around 3VA1112-5EF32-0CA0 without rewiring?","answer":"Yes, the physical footprint is identical — same 3-pole, 125 A frame, same dimensions. The only difference is the release type (TM240 thermal-magnetic vs. the -5EF32's release). No rewiring needed, but confirm the trip curve matches your protection scheme."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1112-4EF32-0KC0","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/3VA1112-4EF32-0KC0 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}}