{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1340-4EF42-0AA0-ZD00","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1340-4EF42-0AA0-ZD00","canonicalUrl":"https://aoctrl.com/siemens/3VA1340-4EF42-0AA0-ZD00","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1340-4EF42-0AA0-ZD00","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 3VA1 IEC frame 400, breaking capacity class S, Icu=36kA @ 415V, 4-pole, line protection TM240, ATAM, In=400A overload protection Ir=280A...400A short-circuit protection Ii=5...10 x In, N conductor unprotected, nut keeper kit for DC Power OEM in China.","salesMarkdown":"The Siemens 3VA1340-4EF42-0AA0-ZD00 is an IEC frame 400 molded-case circuit breaker rated for line protection with a TM240 thermal-magnetic trip unit. Its 36 kA breaking capacity at 415 V (class S) means it can safely interrupt fault currents up to that level on a 400 V distribution bus, providing selectivity headroom for downstream branch breakers. The overload protection is adjustable from 280 A to 400 A, and the short-circuit pickup is set at 5 to 10 times In — settings that let the panel builder coordinate with upstream and downstream devices during a selective coordination study. ## Deployment Context The included nut keeper kit simplifies mounting in OEM enclosures, particularly for DC Power OEM builds in China where panel space and fastening reliability are priorities.","metaTitle":"Siemens 3VA1340-4EF42-0AA0-ZD00 Circuit Breaker, 400A, 36kA","metaDescription":"Siemens 3VA1340-4EF42-0AA0-ZD00 IEC frame 400 circuit breaker, breaking capacity class S, Icu=36kA @ 415V, 4-pole, TM240 overload protection Ir=280-400A, short-circuit protection I","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=1667978&mlfb=3VA1340-4EF42-0AA0-ZD00","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1340-4EF42-0AA0-ZD00/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of 3VA1340-4EF42-0AA0-ZD00?","answer":"The breaking capacity is Icu = 36 kA at 415 V, class S, which means it can safely interrupt fault currents up to 36 kA at that voltage."},{"question":"Where can I buy 3VA1340-4EF42-0AA0-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/3VA1340-4EF42-0AA0-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/3VA1340-4EF42-0AA0-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}}