{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1140-5EF42-0AA0-ZD00","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1140-5EF42-0AA0-ZD00","canonicalUrl":"https://aoctrl.com/siemens/3VA1140-5EF42-0AA0-ZD00","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1140-5EF42-0AA0-ZD00","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 3VA1 IEC frame 160, breaking capacity class M, Icu=55kA @ 415V, 4-pole, TM240, In=40A, overload Ir=28A...40A, short-circuit Ii=5...10 x In, N conductor unprotected, nut keeper kit for DC Power OEM in China.","salesMarkdown":"The Siemens 3VA1140-5EF42-0AA0-ZD00 is a 4-pole IEC frame 160 molded-case circuit breaker in the 3VA1 series, carrying a 55 kA Icu at 415 V (breaking capacity class M). The TM240 thermal-magnetic trip unit is set for a 40 A fixed rating, with overload protection adjustable from 28 A to 40 A and short-circuit pickup from 5 to 10 times In. The neutral conductor is unprotected on this variant, and the assembly includes a nut keeper kit for DC Power OEM installations in China. For a 40 A line protection feeder in a 415 V panel, that SCCR headroom covers most industrial fault scenarios. The adjustable Ir (28–40 A) lets you fine-tune the overload threshold to the actual load, while the Ii range (5–10× In = 200–400 A) sets the instantaneous magnetic trip for motor-start or inrush-heavy circuits. The unprotected neutral means the neutral conductor passes through without overcurrent protection — typical for balanced three-phase loads where the neutral carries only imbalance current. ## Deployment context This breaker mounts in a standard IEC distribution panel or switchboard. The nut keeper kit is a fitment detail for DC Power OEM builds in China — it retains the mounting nuts during assembly, saving time on the line.","metaTitle":"Siemens 3VA1140-5EF42-0AA0-ZD00 Circuit Breaker, 55kA @ 415V","metaDescription":"Siemens 3VA1140-5EF42-0AA0-ZD00 circuit breaker, IEC frame 160, 55kA Icu @ 415V, 40A TM240. 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/412b77dd463506f421ac29839d648f5a.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1667746&mlfb=3VA1140-5EF42-0AA0-ZD00","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1140-5EF42-0AA0-ZD00/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA1140-5EF42-0AA0-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 — submit an RFQ for a firm commitment."},{"question":"What are the key ratings of this breaker?","answer":"The key ratings are: Icu = 55 kA at 415 V (class M), In = 40 A, overload Ir adjustable 28–40 A, short-circuit Ii adjustable 5–10× In, on a 4-pole IEC frame 160 with unprotected neutral."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1140-5EF42-0AA0-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/3VA1140-5EF42-0AA0-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}}