{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1112-3EF32-0AF0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1112-3EF32-0AF0","canonicalUrl":"https://aoctrl.com/siemens/3VA1112-3EF32-0AF0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1112-3EF32-0AF0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1112-3EF32-0AF0, molded case circuit breaker, 3-pole, 125 A, TM240 thermal-magnetic release, line protection, 1 auxiliary + 1 trip alarm switch HQ.","salesMarkdown":"## 125 A MCCB with TM240 release — panel integration note Breaking capacity is voltage-dependent: 75.6 kA at 240 V, 52.5 kA at 415 V, 32 kA at 440 V, and 10.5 kA at 690 V. That covers most low-voltage distribution panels in North American and European 400 V class systems. Thermal derating is published from 40 °C through 70 °C: the breaker holds full 125 A up to 50 °C, then steps down to 120 A at 55 °C, 117.5 A at 60 °C, 115 A at 65 °C, and 112.5 A at 70 °C. ## Footprint and mounting That 76.2 mm width is a standard 3-pole MCCB footprint — three 25.4 mm pole pitches — so it drops into the same DIN-rail or panel-mount cutout as other 125 A frame breakers.","metaTitle":"Siemens 3VA1112-3EF32-0AF0 SENTRON MCCB, 125 A, 3-Pole, Line","metaDescription":"Siemens 3VA1112-3EF32-0AF0 SENTRON molded case circuit breaker, 125 A rated continuous current, 3-pole, TM240 thermal-magnetic release, 75.6 kA at 240 V. Current lifecycle stage. S","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":"75.6 kA","at 415 V":"52.5 kA","at 440 V":"32 kA","at 690 V":"10.5 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":"Yes","Number of poles":"3","Product version":"Line protection","Voltage trigger":"No","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":"1 auxiliary switch + 1 trip alarm switch 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":"without auxiliaryrelease","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","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":"3VA9988-0AB12","Switching capacity class of the circuit breaker":"N","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=523062&mlfb=3VA1112-3EF32-0AF0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1112-3EF32-0AF0/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of 3VA1112-3EF32-0AF0 at 415 V?","answer":"52.5 kA at 415 V. At 240 V it is 75.6 kA, at 440 V it is 32 kA, and at 690 V it is 10.5 kA."},{"question":"What does the TM240 release designation mean on this MCCB?","answer":"TM240 is a thermal-magnetic fixed-trip release. The thermal element provides inverse-time overload protection; the magnetic element provides instantaneous short-circuit protection. It is not adjustable — the trip curve is factory-set for line protection duty."},{"question":"Where can I buy 3VA1112-3EF32-0AF0 and get current pricing?","answer":"This part is sourced to order against an RFQ through independent distribution. Submit a request for quote; availability and current pricing are confirmed at quote time."},{"question":"Will 3VA1112-3EF32-0AF0 fit a panel designed for 3VA1112-5EF32-0CA0?","answer":"Both are 3-pole 125 A SENTRON MCCBs in the same 76.2 mm wide frame, so the physical footprint and bus-bar spacing are identical. The difference is the auxiliary contact configuration — the -0AF0 carries 1 auxiliary + 1 trip alarm switch (HQ), while the -0CA0 variant may differ. Check the auxiliary wiring diagram before drop-in replacement."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1112-3EF32-0AF0","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/3VA1112-3EF32-0AF0 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}}