{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1140-4GF42-0AA0-ZD00","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1140-4GF42-0AA0-ZD00","canonicalUrl":"https://aoctrl.com/siemens/3VA1140-4GF42-0AA0-ZD00","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1140-4GF42-0AA0-ZD00","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 3VA1 IEC frame 160, breaking capacity class S, Icu=36kA @ 415V, 4-pole, line protection TM240, ATAM, In=40A, overload protection Ir=28A...40A, short-circuit protection Ii=5...10 x In, N conductor protection 100%, nut keeper kit for DC Power OEM in China.","salesMarkdown":"The Siemens 3VA1140-4GF42-0AA0-ZD00 is a 4-pole IEC molded-case circuit breaker in the 3VA1 frame, rated 40 A continuous with an interrupting capacity of 36 kA at 415 V (class S). It carries a TM240 thermal-magnetic trip unit — overload adjustable from 28 to 40 A (Ir), short-circuit pickup fixed at 5 to 10 times In. The N conductor is protected at 100% (full-rated neutral). For a 40 A feeder on a 400 V three-phase system, that gives solid selectivity headroom against a 50 kA or 65 kA upstream device. The TM240 trip unit means the thermal element is calibrated for a 40 A frame; the Ir adjustment band (28–40 A) lets you fine-tune the overload setpoint to match the actual load current, which is useful when the conductor ampacity or transformer rating doesn't align with the breaker's In. The short-circuit magnetic pickup (Ii) at 5–10× In means the instantaneous trip fires between 200 and 400 A — that's a wide band, so coordinate downstream with a current-limiting fuse if the branch circuit has a low-fault transformer. ## Deployment context The nut keeper kit (part of the ZD00 suffix) is specified for DC Power OEM builds in China; it retains the terminal nuts during high-vibration transport or panel assembly.","metaTitle":"Siemens 3VA1140-4GF42-0AA0-ZD00 Circuit Breaker, 40A, 36kA @","metaDescription":"Siemens 3VA1140-4GF42-0AA0-ZD00 IEC frame 160 MCCB, 4-pole, 40A, Icu=36kA @ 415V. TM240 overload Ir=28-40A, short-circuit Ii=5-10xIn. Active lifecycle. Sourced 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":"https://cdn.aoctrl.com/7c7f82f98fe6711e9d0b100777fd2d6e.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1667740&mlfb=3VA1140-4GF42-0AA0-ZD00","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1140-4GF42-0AA0-ZD00/alternatives.json"},"ai":{"faq":[{"question":"What is the interrupting rating of this breaker?","answer":"The interrupting capacity (Icu) is 36 kA at 415 V, which is class S for the 3VA1 frame."},{"question":"Where can I buy 3VA1140-4GF42-0AA0-ZD00?","answer":"This part is sourced to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."},{"question":"What is the overload adjustment range on this MCCB?","answer":"The TM240 thermal-magnetic trip allows overload current (Ir) adjustment from 28 A to 40 A. Short-circuit pickup (Ii) is set at 5 to 10 times In (200–400 A)."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1140-4GF42-0AA0-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/3VA1140-4GF42-0AA0-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}}