{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1112-5MH32-0BC0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1112-5MH32-0BC0","canonicalUrl":"https://aoctrl.com/siemens/3VA1112-5MH32-0BC0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1112-5MH32-0BC0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 3VA1 IEC frame 160, breaking capacity class M, 3-pole, In=125A, Icu=55kA @ 415V, TM120M trip unit, undervoltage release 24V DC, 2 auxiliary switches HQ, nut keeper kit.","salesMarkdown":"## What this 3VA1 MCCB carries The Siemens 3VA1112-5MH32-0BC0 is a 3-pole IEC molded-case circuit breaker on the 160 A frame, rated 125 A continuous with a TM120M thermal-magnetic trip unit. This variant is configured for starter protection (motor branch circuit) with adjustable short-circuit pickup Ii = 5...15 × In. It ships without overload protection — the TM120M provides the magnetic-only function, so a separate overload relay handles the thermal curve for the motor. The nut keeper kit keeps the terminal hardware captive during panel wiring. ## Integrated accessories The aux switches report breaker position back to the PLC or status panel — one for open/closed, the second for trip signal if needed.","metaTitle":"Siemens 3VA1112-5MH32-0BC0 Circuit Breaker, 125A, 55kA @ 415","metaDescription":"Siemens 3VA1112-5MH32-0BC0 IEC frame 160 MCCB, 3-pole, 125A, Icu=55kA @ 415V, TM120M trip, UVR 24V DC, 2 aux switches. Current production. Sourced to order.","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=356075&mlfb=3VA1112-5MH32-0BC0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1112-5MH32-0BC0/alternatives.json"},"ai":{"faq":[{"question":"What does the TM120M trip unit mean for motor protection?","answer":"The TM120M is a thermal-magnetic trip unit set for 125 A. On this variant it provides magnetic-only (short-circuit) protection with adjustable pickup from 5× to 15× In. There is no overload protection built in — you must pair it with a separate overload relay for the motor thermal curve."},{"question":"Where can I buy the 3VA1112-5MH32-0BC0?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution channels. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm response."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1112-5MH32-0BC0","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/3VA1112-5MH32-0BC0 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}}