{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1112-5MH36-0CC0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1112-5MH36-0CC0","canonicalUrl":"https://aoctrl.com/siemens/3VA1112-5MH36-0CC0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1112-5MH36-0CC0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 3VA1 IEC frame 160, breaking capacity class M, Icu=55kA @ 415V, 3-pole, starter protection TM120M, AM, In=125A, short-circuit protection Ii=5...15 x In, clamp connection, undervoltage release (UVR) 120-127V AC 50/60Hz, 2 auxiliary switches HQ.","salesMarkdown":"The Siemens 3VA1112-5MH36-0CC0 is a 3-pole IEC frame 160 molded-case circuit breaker with a 125 A rating and a 55 kA interrupting capacity at 415 V AC — class M breaking capacity, meaning it handles moderate fault levels typical of industrial distribution panels without cascading upstream. The TM120M thermal-magnetic trip unit provides starter protection: the thermal element tracks motor heating, while the magnetic short-circuit pickup is adjustable from 5 to 15 times In (625 A to 1875 A). This breaker ships without overload protection (the TM120M covers short-circuit only; motor overload protection must come from a separate relay or contactor). For selectivity studies, the Ics (service breaking capacity) is typically 100% of Icu on the 3VA1 platform, so downstream devices can coordinate without nuisance trips. The 125 A continuous rating suits motor branch circuits, feeder taps, or panel main breakers sized for that load. The undervoltage release (UVR) coil is wound for 120-127 V AC, 50/60 Hz — it will drop the breaker open when control voltage falls below about 70% of rated, a common requirement for emergency-stop circuits or undervoltage protection schemes. ## Deployment context The clamp terminals accept copper or aluminum conductors up to 185 mm², typical for panel feeder connections. The two HQ auxiliary switches provide position feedback (open/closed) to a PLC or status lamp; the UVR coil occupies the left-side accessory slot. In a motor starter assembly, this breaker serves as the branch-circuit short-circuit protective device (SCPD) ahead of a contactor and overload relay.","metaTitle":"Siemens 3VA1112-5MH36-0CC0 Circuit Breaker, 55kA @ 415V, 125","metaDescription":"Siemens 3VA1112-5MH36-0CC0 IEC frame 160 circuit breaker, 55kA breaking capacity at 415V, 125A TM120M, undervoltage release 120-127V AC. Current lifecycle stage. 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=192311&mlfb=3VA1112-5MH36-0CC0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1112-5MH36-0CC0/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of this breaker?","answer":"The 3VA1112-5MH36-0CC0 has an Icu of 55 kA at 415 V AC, class M breaking capacity per IEC 60947-2."},{"question":"What does the TM120M trip unit protect?","answer":"The TM120M provides short-circuit protection only (magnetic trip adjustable 5-15 x In). Overload protection must be supplied by a separate device such as a motor overload relay."},{"question":"Where can I buy 3VA1112-5MH36-0CC0?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1112-5MH36-0CC0","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/3VA1112-5MH36-0CC0 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}}