{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1112-4GE42-0AA0-ZD00","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1112-4GE42-0AA0-ZD00","canonicalUrl":"https://aoctrl.com/siemens/3VA1112-4GE42-0AA0-ZD00","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1112-4GE42-0AA0-ZD00","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 3VA1 IEC frame 160 circuit breaker, breaking capacity class S, Icu=36kA @ 415V, 4-pole, line protection TM220, ATFM, In=125A, overload protection Ir=88A...125A, short-circuit protection Ii=10 x In, N conductor protection 100%, nut keeper kit for DC Power OEM in China.","salesMarkdown":"The Siemens 3VA1112-4GE42-0AA0-ZD00 is a 4-pole IEC frame 160 circuit breaker in breaking capacity class S, rated for 125 A continuous current with an ultimate breaking capacity (Icu) of 36 kA at 415 V AC. The TM220 thermal-magnetic trip unit provides adjustable overload protection from 88 A to 125 A (Ir) and fixed short-circuit protection at 10 × In (Ii). N conductor protection is set at 100 %, and the unit includes a nut keeper kit for DC Power OEM applications in China. The 36 kA Icu at 415 V places this breaker in class S — suitable for downstream distribution panels where fault current levels stay under that threshold. The TM220 trip curve (thermal-magnetic, fixed magnetic) means it handles motor inrush without nuisance tripping on the thermal element, but the magnetic pickup at 10 × In (1250 A) is fixed, not adjustable. For line protection of feeders or large motor branch circuits, that's typical; for transformer primary protection, verify the inrush profile against the fixed magnetic setting. The 4-pole configuration with N conductor protection at 100 % makes this breaker appropriate for 3-phase + N systems where the neutral is fully rated and not downsized. Common in IEC distribution panels feeding mixed single-phase and three-phase loads. ## Deployment context The nut keeper kit included with this variant is specific to DC Power OEM builds in China — verify that the kit matches your enclosure's busbar or terminal arrangement before panel layout.","metaTitle":"Siemens 3VA1112-4GE42-0AA0-ZD00 Circuit Breaker, 125A, 36kA","metaDescription":"Siemens 3VA1112-4GE42-0AA0-ZD00 IEC frame 160 circuit breaker, 125A, Icu=36kA @ 415V, 4-pole, TM220 ATFM, N conductor protection 100%. Current lifecycle stage. Quoted to order agai","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":"https://cdn.aoctrl.com/56cca0b4649a9a8167a307a7baf0ead3.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1667559&mlfb=3VA1112-4GE42-0AA0-ZD00","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1112-4GE42-0AA0-ZD00/alternatives.json"},"ai":{"faq":[{"question":"What is 3VA1112-4GE42-0AA0-ZD00's listed lifecycle_stage on this component line?","answer":"The lifecycle stage is listed as current."},{"question":"What is 3VA1112-4GE42-0AA0-ZD00's listed description?","answer":"The listed description is: circuit breaker 3VA1 IEC frame 160 breaking capacity class S Icu=36kA @ 415V 4-pole, line protection TM220, ATFM, In=125A overload protection Ir=88A...125A short-circuit protection Ii=10 x In N conductor protection 100% nut keeper kit for DC Power OEM in China."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1112-4GE42-0AA0-ZD00","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/3VA1112-4GE42-0AA0-ZD00 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}}