{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1340-4EE42-0AA0-ZD00","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1340-4EE42-0AA0-ZD00","canonicalUrl":"https://aoctrl.com/siemens/3VA1340-4EE42-0AA0-ZD00","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1340-4EE42-0AA0-ZD00","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 3VA1 IEC frame 400, breaking capacity class S, Icu=36kA @ 415V, 4-pole, line protection TM220, ATFM, In=400A, overload protection Ir=280A...400A, short-circuit protection Ii=10 x In, N conductor unprotected, nut keeper kit for DC Power OEM in China.","salesMarkdown":"The Siemens 3VA1340-4EE42-0AA0-ZD00 is a 4-pole IEC frame 400 molded case circuit breaker with a 36 kA interrupting capacity at 415 V (breaking capacity class S). It's fitted with a TM220 thermal-magnetic trip unit — the thermal element adjustable from 280 A to 400 A, the magnetic pickup fixed at 10× In (4000 A). The neutral pole is unprotected, which means it tracks the phase poles thermally but doesn't have its own overload or short-circuit sensing; that's standard for 3VA1 line-protection breakers where the neutral is a switched-only pole. The 36 kA Icu at 415 V tells you this breaker can safely clear a fault up to 36,000 A symmetrical without welding or rupturing — that's class S in the 3VA1 family, sitting between the standard (25 kA) and higher (50 kA) tiers. For a 400 A frame, that's enough for most industrial secondary-distribution panels fed from a transformer in the 1–2 MVA range. The TM220 thermal-magnetic trip gives you a fixed short-circuit pickup at 10× In (4000 A), so it coordinates well downstream of a larger feeder breaker with a higher Ii setting. The adjustable Ir band (280–400 A) lets you match the continuous load without swapping the trip unit — set it to 320 A for a 300 A continuous load, for example. Mounts in a standard IEC frame 400 footprint — four-pole version takes the same panel cutout as the three-pole plus one neutral pole width. The nut keeper kit on the line-side terminals is already fitted for the DC Power OEM build; if you're landing aluminum conductors, the keeper prevents the nut from backing off during thermal cycling. No special DIN-rail adapter — this is a bolt-on breaker, intended for a mounting plate or backpanel.","metaTitle":"Siemens 3VA1340-4EE42-0AA0-ZD00 Circuit Breaker, 400A, 36kA","metaDescription":"Siemens 3VA1340-4EE42-0AA0-ZD00 IEC frame 400 breaker, 36kA breaking capacity at 415V, 4-pole, TM220 thermal-magnetic trip, In=400A, Ir=280-400A. Current lifecycle stage. Sourced t","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=1667976&mlfb=3VA1340-4EE42-0AA0-ZD00","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1340-4EE42-0AA0-ZD00/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of this breaker?","answer":"The Icu is 36 kA at 415 V, which is the breaking capacity class S in the 3VA1 IEC frame 400 family."},{"question":"What does the TM220 trip unit mean?","answer":"TM220 is a thermal-magnetic trip with adjustable overload protection (Ir = 280–400 A) and fixed short-circuit protection at 10× In (4000 A). The '220' denotes the frame amp rating of 400 A with the specific thermal curve."},{"question":"Where can I buy 3VA1340-4EE42-0AA0-ZD00?","answer":"This part is sourced 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/3VA1340-4EE42-0AA0-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/3VA1340-4EE42-0AA0-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}}