{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1112-3EF36-0BA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1112-3EF36-0BA0","canonicalUrl":"https://aoctrl.com/siemens/3VA1112-3EF36-0BA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1112-3EF36-0BA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1112-3EF36-0BA0, molded case circuit breaker, 3-pole, 125 A rated continuous current, TM240 thermal-magnetic release, line protection version, 70 mm depth.","salesMarkdown":"The 125 A rating holds flat from 40 °C through 50 °C — no derating needed in a warm enclosure — then drops gradually to 112.5 A at 70 °C ambient. That thermal curve matters when you're packing breakers into a crowded panel and need to know the real ampacity at operating temperature. This MCCB delivers 75.6 kA at 240 V, 52.5 kA at 415 V, 32 kA at 440 V, and 10.5 kA at 690 V. For a 415 V industrial feeder, 52.5 kA gives headroom above typical transformer fault levels (usually 25–40 kA), so you can coordinate downstream without cascading. At 690 V the 10.5 kA figure is lower, which is typical for a 125 A frame on higher voltage — check the available fault current at your secondary before committing this breaker to a 690 V bus. ## Built-in undervoltage release — no auxiliary contacts There is no separate auxiliary contact version on this variant, and no communication module or ground-fault monitoring. If you need remote status feedback, you'll add an external auxiliary switch block.","metaTitle":"Siemens 3VA1112-3EF36-0BA0 SENTRON MCCB, 125 A, 3-Pole, TM24","metaDescription":"Siemens 3VA1112-3EF36-0BA0 SENTRON molded case circuit breaker, 125 A rated continuous current, 3-pole, TM240 release, 75.6 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":"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":"No","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":"Yes","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":"Undervoltage release (UVR)","Ground fault monitoring version":"Without","Of The Integrated Auxiliary Trip":"3VA9608-0BB11","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":"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":"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=201099&mlfb=3VA1112-3EF36-0BA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1112-3EF36-0BA0/alternatives.json"},"ai":{"faq":[{"question":"What is the rated continuous current of this MCCB?","answer":"The rated continuous current Iu is 125 A, and it holds that rating from 40 °C through 50 °C ambient. Above 50 °C it derates: 120 A at 55 °C, 117.5 A at 60 °C, 115 A at 65 °C, and 112.5 A at 70 °C."},{"question":"What breaking capacity does it have at 415 V?","answer":"At 415 V the interrupting rating is 52.5 kA. 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":"Does this breaker include an undervoltage release?","answer":"Yes, it has an integrated undervoltage release (UVR) as the auxiliary release, designated as part 3VA9608-0BB11 for the trip coil assembly. There is no separate auxiliary contact block on this variant."},{"question":"Where can I buy the 3VA1112-3EF36-0BA0 and get current pricing?","answer":"This part is sourced to order against an RFQ through independent distribution. Current pricing and availability are confirmed at quote time — submit an RFQ for a firm quote."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1112-3EF36-0BA0","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/3VA1112-3EF36-0BA0 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}}