{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1112-4EF36-0JA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1112-4EF36-0JA0","canonicalUrl":"https://aoctrl.com/siemens/3VA1112-4EF36-0JA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1112-4EF36-0JA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1112-4EF36-0JA0, molded case circuit breaker, 3-pole, 125 A, TM240 thermal-magnetic release, 121 kA at 240 V, 70 mm depth.","salesMarkdown":"The 125 A rating holds flat from 40 °C to 50 °C, 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 — so if your panel ambient runs hot, you lose about 10 % of the headline number by the time you hit 70 °C. That derating curve is the spec that decides whether this breaker holds a full 125 A feeder or needs to be upsized for a warm enclosure. Interrupting capacity is 121 kA at 240 V, 75.6 kA at 415 V, 52.5 kA at 440 V, and 11.9 kA at 690 V. The 76.2 mm width fits Siemens SENTRON mounting plates and most DIN-rail adapters. Front protection is IP40 — sealed against tools and small wires, but not against washdown. Keep this behind a panel door in any wet or dusty environment. ## Release and accessories — what's on board, what's not The TM240 overcurrent release is a thermal-magnetic type — fixed thermal curve for overload, magnetic pickup for short-circuit. No electronic adjustment, no communication module, no phase-failure detection. No auxiliary contact version is included (without). No undervoltage release. No ground-fault monitoring. If your application demands any of those, you'll need a different variant or an external module.","metaTitle":"Siemens 3VA1112-4EF36-0JA0 SENTRON MCCB, 125 A, 3-Pole, 121","metaDescription":"Siemens SENTRON 3VA1112-4EF36-0JA0 molded case circuit breaker, 125 A, 3-pole, TM240 release, 121 kA at 240 V. Current lifecycle. 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":"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":"Without","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":"3VA9688-0BL32","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":"0","Protective function of the overcurrent release":"LI","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":"box terminal","Arrangement of electrical connectors / for main current circuit":"Front terminal","Type of connectable conductor cross-section, round conductor terminal, stranded":"1 x (1.5 - 70 mm²)"}},"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=380692&mlfb=3VA1112-4EF36-0JA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1112-4EF36-0JA0/alternatives.json"},"ai":{"faq":[{"question":"Will 3VA1112-4EF36-0JA0 drop into a panel that was specified around 3VA1112-5EF32-0CA0 without rewiring?","answer":"Both are 3-pole SENTRON MCCBs with the same physical footprint (70 mm depth, 76.2 mm width, 130 mm height), so they share the same mounting hole pattern and busbar spacing. The key difference is the overcurrent release: this one uses a TM240 thermal-magnetic release, while the 3VA1112-5EF32-0CA0 uses an electronic release. If the panel was wired for an electronic release with external current transformers or a communication bus, the TM240 version won't connect to those. For a straight line-protection swap without auxiliaries, it fits mechanically."},{"question":"What is 3VA1112-4EF36-0JA0's listed depth (70 mm) on this component line?","answer":"The depth is 70 mm, as listed in the manufacturer specifications."},{"question":"What is 3VA1112-4EF36-0JA0's listed width (76.2 mm) on this component line?","answer":"The width is 76.2 mm, as listed in the manufacturer specifications."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1112-4EF36-0JA0","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/3VA1112-4EF36-0JA0 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}}