{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1112-5MH32-0KA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1112-5MH32-0KA0","canonicalUrl":"https://aoctrl.com/siemens/3VA1112-5MH32-0KA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1112-5MH32-0KA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 3VA1 IEC frame 160 MCCB, breaking capacity class M, Icu=55kA @ 415V, 3-pole, starter protection TM120M, In=125A, shunt trip (STL) 220-250 V DC / 208-277 V AC.","salesMarkdown":"The Siemens 3VA1112-5MH32-0KA0 is an IEC frame 160 molded-case circuit breaker with a 125 A rating and a 55 kA interrupting capacity at 415 V AC (breaking capacity class M). It's a 3-pole unit designed for starter protection — meaning it sits upstream of a motor starter to handle short-circuit faults, not overloads. The TM120M thermal-magnetic trip unit is set for magnetic-only (short-circuit) protection with an adjustable instantaneous pickup between 5 and 15 times In, so you dial it in to coordinate with the starter's contactor and OL relay. The integrated shunt trip (STL) operates on 220-250 V DC or 208-277 V AC, letting you remotely trip the breaker from an E-stop or safety PLC. The 125 A continuous rating matches a typical motor load, but the adjustable instantaneous trip (5–15× In) is the key selection parameter. The nut keeper kit (included per the order code) secures the line and load lugs — no lost hardware during panel build-out. The shunt trip terminals are clearly marked and accept 1.5–2.5 mm² wire; strip length 8 mm for cage clamps. Plan for a minimum 10 cm clearance above and below the breaker for arc-vent path and cable bending radius.","metaTitle":"Siemens 3VA1112-5MH32-0KA0 Circuit Breaker, 125A, 55kA @ 415","metaDescription":"Siemens 3VA1112-5MH32-0KA0 IEC frame 160 MCCB, 125A, Icu=55kA @ 415V, 3-pole, shunt trip, starter protection. Current production. Order via RFQ.","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=421553&mlfb=3VA1112-5MH32-0KA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1112-5MH32-0KA0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA1112-5MH32-0KA0 and get a price?","answer":"This breaker 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 quote."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1112-5MH32-0KA0","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/3VA1112-5MH32-0KA0 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}}