{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1340-4GF42-0AA0-ZD00","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1340-4GF42-0AA0-ZD00","canonicalUrl":"https://aoctrl.com/siemens/3VA1340-4GF42-0AA0-ZD00","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1340-4GF42-0AA0-ZD00","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 3VA1 IEC frame 400 circuit breaker, 4-pole, class S, Icu=36kA @ 415V, TM240 ATAM, In=400A, Ir=280A...400A, Ii=5...10 x In, N conductor protection 100%, nut keeper kit for DC Power OEM in China.","salesMarkdown":"The Siemens 3VA1340-4GF42-0AA0-ZD00 is a 4-pole IEC frame 400 circuit breaker from the 3VA1 series, rated at In=400A with a breaking capacity of Icu=36kA at 415V (class S). The TM240 ATAM trip unit provides adjustable overload protection (Ir=280A...400A) and short-circuit protection (Ii=5...10 x In), plus 100% N conductor protection. The adjustable Ir band (280A to 400A) lets you fine-tune the thermal trip to match the actual load, avoiding nuisance trips while still protecting the cable. The Ii range of 5 to 10 times In (2000A to 4000A) sets the magnetic trip threshold for short-circuit protection — a wider band than fixed-setting breakers, useful when coordinating with downstream devices. ## Deployment context The nut keeper kit simplifies installation on busbars in OEM builds. The DC Power OEM designation suggests it's intended for DC power distribution applications, where the 100% N conductor protection is relevant for ungrounded or high-resistance-grounded systems.","metaTitle":"Siemens 3VA1340-4GF42-0AA0-ZD00 circuit breaker, 400A, 36kA","metaDescription":"Siemens 3VA1340-4GF42-0AA0-ZD00 IEC frame 400 circuit breaker, 4-pole, 36kA breaking capacity at 415V, TM240 trip unit. Active production. 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=1667980&mlfb=3VA1340-4GF42-0AA0-ZD00","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1340-4GF42-0AA0-ZD00/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of this breaker?","answer":"The rated ultimate short-circuit breaking capacity (Icu) is 36kA at 415V, which is class S in the Siemens 3VA1 IEC frame 400 range."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1340-4GF42-0AA0-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/3VA1340-4GF42-0AA0-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}}