{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1112-5MH36-0AD0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1112-5MH36-0AD0","canonicalUrl":"https://aoctrl.com/siemens/3VA1112-5MH36-0AD0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1112-5MH36-0AD0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 3VA1 IEC frame 160 MCCB, breaking capacity class M, Icu=55kA @ 415V, 3-pole, starter protection TM120M, AM, In=125A, without overload protection, short-circuit protection Ii=5...15 x In, clamp connection, 3 auxiliary switches HQ.","salesMarkdown":"The Siemens 3VA1112-5MH36-0AD0 is a 3-pole IEC frame 160 molded-case circuit breaker rated 125 A continuous, with a breaking capacity of 55 kA at 415 V AC — that is the 'M' class rating, meaning it can safely interrupt fault currents up to that level without upstream cascading. The TM120M thermal-magnetic trip unit provides starter protection: the magnetic pickup is adjustable from 5 to 15 times In (so 625 A to 1875 A short-circuit pickup), and the thermal element is fixed at 125 A. Note the 'without overload protection' in the description — this variant ships without the overload relay module (AM), so it acts as a magnetic-only short-circuit protector for motor starter applications where a separate overload relay handles the thermal curve. ## Deployment context","metaTitle":"Siemens 3VA1112-5MH36-0AD0 Circuit Breaker, 125A, 55kA @ 415","metaDescription":"Siemens 3VA1112-5MH36-0AD0 IEC frame 160 MCCB, 3-pole, 125A, Icu=55kA @ 415V, starter protection TM120M, adjustable short-circuit Ii=5-15xIn, 3 aux switches. Current lifecycle stag","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=174109&mlfb=3VA1112-5MH36-0AD0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1112-5MH36-0AD0/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of this MCCB?","answer":"Rated Icu = 55 kA at 415 V AC (breaking capacity class M on the 3VA1 IEC frame 160). This is the maximum fault current the breaker can safely interrupt without damage."},{"question":"Does this breaker include overload protection?","answer":"No — the description states 'without overload protection'. It ships with the TM120M thermal-magnetic trip unit but the thermal (overload) function is disabled; only the magnetic short-circuit protection (Ii adjustable 5...15 x In) is active. A separate overload relay must be used for motor thermal protection."},{"question":"Where can I buy 3VA1112-5MH36-0AD0?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm offer."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1112-5MH36-0AD0","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/3VA1112-5MH36-0AD0 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}}