{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1112-5MH32-0CC0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1112-5MH32-0CC0","canonicalUrl":"https://aoctrl.com/siemens/3VA1112-5MH32-0CC0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1112-5MH32-0CC0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 3VA1 IEC frame 160 MCCB, 3-pole, breaking capacity class M Icu=55kA @ 415V AC, In=125A, starter protection TM120M, AM, without overload protection, short-circuit protection Ii=5...15 x In, undervoltage release 120-127V AC 50/60Hz, 2 auxiliary switches HQ, nut keeper kit.","salesMarkdown":"The Siemens 3VA1112-5MH32-0CC0 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 — class M on the Siemens scale, meaning it sits above standard distribution duty and handles moderate industrial fault levels without cascading upstream. This is a starter-protection variant (TM120M thermal-magnetic release, AM characteristic) configured for short-circuit protection only — there is no built-in overload protection, so it pairs with a separate overload relay for motor branch circuits. The adjustable instantaneous trip range is 5 to 15 times In. The UVR drops the breaker on loss of control voltage — common for emergency-stop chains or undervoltage protection schemes. ## Integration notes for panel builders The UVR coil draws continuously when energized; verify the control transformer sizing if the breaker shares a 120 V AC control bus with multiple UVRs. They are pre-wired with screw terminals; no additional terminal blocks needed for basic signaling.","metaTitle":"Siemens 3VA1112-5MH32-0CC0 Circuit Breaker, 125A, 55kA @ 415","metaDescription":"Siemens 3VA1112-5MH32-0CC0 IEC frame 160 MCCB, 3-pole, 125A, breaking capacity 55kA @ 415V AC. Starter protection TM120M, UVR 120-127V AC, 2 aux switches. Current lifecycle stage.","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=109254&mlfb=3VA1112-5MH32-0CC0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1112-5MH32-0CC0/alternatives.json"},"ai":{"faq":[{"question":"What does the 55 kA breaking capacity at 415 V mean for my panel?","answer":"The 55 kA Icu at 415 V AC means this breaker can safely interrupt fault currents up to 55,000 A without welding contacts or rupturing the case — sufficient for most industrial secondary distribution panels fed from a transformer rated up to about 2.5 MVA at 415 V."},{"question":"Does this breaker include overload protection for a motor?","answer":"No — the TM120M release is configured for short-circuit protection only (instantaneous trip adjustable 5-15 x In). You must add a separate overload relay (e.g., Siemens 3RU2 or 3RB3) in series for thermal motor protection."},{"question":"Where can I buy 3VA1112-5MH32-0CC0 and how is it quoted?","answer":"This MCCB is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — no stock count or price is published here."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1112-5MH32-0CC0","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/3VA1112-5MH32-0CC0 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}}