{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1112-4EF32-0AA0-ZD00","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1112-4EF32-0AA0-ZD00","canonicalUrl":"https://aoctrl.com/siemens/3VA1112-4EF32-0AA0-ZD00","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1112-4EF32-0AA0-ZD00","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 3VA1 series, IEC frame 160, breaking capacity class S, 3-pole, In=125A, Icu=36kA @ 415V, TM240 overload protection Ir=88A...125A, short-circuit protection Ii=5...10 x In, with nut keeper kit for DC Power OEM in China.","salesMarkdown":"The Siemens 3VA1112-4EF32-0AA0-ZD00 is a 3-pole IEC frame 160 molded case circuit breaker with a 125 A nominal rating and a 36 kA interrupting capacity at 415 V (breaking capacity class S). The TM240 thermal-magnetic trip unit gives adjustable overload protection from 88 A to 125 A (Ir), and short-circuit pickup (Ii) is fixed at 5 to 10 times In. The 125 A In and 36 kA Icu @ 415 V place this breaker squarely in the 'S' (standard) breaking capacity class for the 3VA1 frame. For a 415 V line, that Icu covers most industrial distribution panels fed by a transformer of 1,000 kVA or less. The TM240 trip unit's adjustable Ir (88–125 A) lets you fine-tune the overload threshold to match the downstream cable or busway rating without swapping the breaker. The nut keeper kit is a line-item detail for the DC Power OEM variant destined for China — it secures the terminal nuts against vibration in transport or high-vibration environments like a data-center power skid. ## Panel integration The 3VA1 frame is a compact IEC design — 105 mm wide per pole — so a 3-pole unit fits a 315 mm-wide DIN section. The nut keeper kit is pre-installed; no additional hardware needed for the line and load terminals.","metaTitle":"Siemens 3VA1112-4EF32-0AA0-ZD00 Circuit Breaker, 125A, 36kA","metaDescription":"Siemens 3VA1112-4EF32-0AA0-ZD00 IEC frame 160 circuit breaker, 3-pole, 125A, Icu=36kA @ 415V. TM240 overload protection Ir=88A-125A. Current lifecycle stage. Quoted 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=1667556&mlfb=3VA1112-4EF32-0AA0-ZD00","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1112-4EF32-0AA0-ZD00/alternatives.json"},"ai":{"faq":[{"question":"What is the interrupting rating of this breaker?","answer":"The 3VA1112-4EF32-0AA0-ZD00 has a rated ultimate short-circuit breaking capacity (Icu) of 36 kA at 415 V AC, which is the 'S' (standard) breaking capacity class for the 3VA1 IEC frame."},{"question":"Where can I buy 3VA1112-4EF32-0AA0-ZD00 and how is it quoted?","answer":"This part 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 price and lead time."},{"question":"What does the 'TM240, ATAM' designation mean on this breaker?","answer":"TM240 indicates a thermal-magnetic trip unit with a 240 A frame rating (the maximum continuous current the trip unit can handle). ATAM is an internal Siemens code for the adjustable overload (Ir) and fixed short-circuit (Ii) trip settings on this variant. The overload protection Ir is adjustable from 88 A to 125 A, and the short-circuit pickup Ii is fixed at 5 to 10 times In (625 A to 1,250 A)."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1112-4EF32-0AA0-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/3VA1112-4EF32-0AA0-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}}