{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1112-5MH36-0BH0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1112-5MH36-0BH0","canonicalUrl":"https://aoctrl.com/siemens/3VA1112-5MH36-0BH0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1112-5MH36-0BH0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 3VA1 IEC frame 160 MCCB, 3-pole, breaking capacity class M (Icu=55kA @ 415V), In=125A, starter protection TM120M, AM, without overload protection, short-circuit protection Ii=5...15 x In, clamp connection, undervoltage release (UVR) 24V DC, 2 auxiliary switches HQ, 1 trip alarm switch HQ.","salesMarkdown":"The Siemens 3VA1112-5MH36-0BH0 is a 3-pole IEC molded-case circuit breaker from the 3VA1 frame 160 series, rated 125 A continuous current. The breaker is configured for starter protection with a TM120M thermal-magnetic trip unit set at 125 A. The 'without overload protection' note means the thermal element is bypassed — this unit provides only short-circuit protection, with adjustable instantaneous pickup (Ii) from 5 to 15 times In. That makes it a fit for motor branch circuits where overload protection is handled separately by an overload relay or soft starter. The undervoltage release (UVR) is 24 V DC. ## Deployment context The clamp connection terminals accept copper or aluminum conductors up to the rated cross-section for the 125 A frame. In a motor control center, it typically sits in the feeder section ahead of the contactor and overload relay, providing the short-circuit protection that the overload relay alone cannot handle.","metaTitle":"Siemens 3VA1112-5MH36-0BH0 Circuit Breaker, 125A, 55kA @ 415","metaDescription":"Siemens 3VA1112-5MH36-0BH0 IEC 3VA1 frame 160 MCCB, 125A, 55kA breaking capacity @ 415V. Starter protection TM120M, UVR 24V DC, 2 aux switches. Lifecycle: current. Available to ord","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Molded Case Circuit Breakers (MCCB)"],"specifications":{"lifecycle_stage":"current"}},"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=112679&mlfb=3VA1112-5MH36-0BH0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1112-5MH36-0BH0/alternatives.json"},"ai":{"faq":[{"question":"What is 3VA1112-5MH36-0BH0 used for?","answer":"It is a 3-pole molded-case circuit breaker for motor starter protection, providing short-circuit protection (without overload function) at 125 A with 55 kA breaking capacity at 415 V. It includes an undervoltage release (24 V DC), two auxiliary switches, and one trip alarm switch for status feedback."},{"question":"Where can I buy 3VA1112-5MH36-0BH0?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — no stock or price figures are published here."},{"question":"What is the breaking capacity of this breaker?","answer":"The breaking capacity is Icu = 55 kA at 415 V (class M), meaning it safely interrupts fault currents up to that level at that voltage."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1112-5MH36-0BH0","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/3VA1112-5MH36-0BH0 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}}