{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1340-5EF42-0AA0-ZD00","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1340-5EF42-0AA0-ZD00","canonicalUrl":"https://aoctrl.com/siemens/3VA1340-5EF42-0AA0-ZD00","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1340-5EF42-0AA0-ZD00","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 3VA1 IEC frame 400, circuit breaker, 4-pole, breaking capacity class M Icu=55kA @ 415V, TM240 ATAM, In=400A, overload Ir=280A...400A, short-circuit Ii=5...10 x In, N conductor unprotected, nut keeper kit, for DC Power OEM in China.","salesMarkdown":"The Siemens 3VA1340-5EF42-0AA0-ZD00 is a 4-pole IEC frame 400 molded-case circuit breaker from the 3VA1 series, configured for line protection with a TM240 ATAM trip unit. The In=400 A continuous rating and adjustable overload protection (Ir = 280 A to 400 A) let you match the breaker to the cable or busbar ampacity, not the other way around. The TM240 ATAM is a thermal-magnetic trip unit. The thermal element handles overloads (Ir adjustable 280–400 A), and the magnetic element handles short-circuits (Ii adjustable 5 to 10 x In, so 2000 A to 4000 A). The N conductor is unprotected on this variant, which is standard for 3-phase loads where the neutral carries only unbalanced current.","metaTitle":"Siemens 3VA1340-5EF42-0AA0-ZD00 Circuit Breaker, 400A, 55kA","metaDescription":"Siemens 3VA1340-5EF42-0AA0-ZD00 IEC frame 400 breaker, 55kA breaking capacity at 415V, 4-pole, TM240 ATAM, Ir 280-400A. Current lifecycle stage. Sourced to order against 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":"https://cdn.aoctrl.com/f59d8c360c846d5ff9ef773daebb7908.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1667984&mlfb=3VA1340-5EF42-0AA0-ZD00","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1340-5EF42-0AA0-ZD00/alternatives.json"},"ai":{"faq":[{"question":"What are the key ratings for this breaker?","answer":"It is a 4-pole IEC frame 400 breaker with 55 kA breaking capacity at 415 V (class M), In=400 A continuous rating, adjustable overload protection Ir=280 A to 400 A, and adjustable short-circuit protection Ii=5 to 10 x In."},{"question":"Where can I buy 3VA1340-5EF42-0AA0-ZD00?","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/3VA1340-5EF42-0AA0-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/3VA1340-5EF42-0AA0-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}}