{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1340-5EF32-0KB0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1340-5EF32-0KB0","canonicalUrl":"https://aoctrl.com/siemens/3VA1340-5EF32-0KB0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1340-5EF32-0KB0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 3VA1 IEC frame 400 circuit breaker, breaking capacity class M, Icu=55kA @ 415V, 3-pole, line protection TM240, ATAM, In=400A, overload protection Ir=280A...400A, short-circuit protection Ii=5...10 x In, with shunt trip left 208-277 V AC / 220-250 V DC, 2 auxiliary switches.","salesMarkdown":"The Siemens 3VA1340-5EF32-0KB0 is a 3-pole IEC frame 400 molded case circuit breaker with a breaking capacity class M rated at 55 kA at 415 V AC — that's the Icu, the ultimate short-circuit breaking capacity, meaning it can safely interrupt a fault up to that level once without needing replacement. The TM240 thermal-magnetic trip unit gives you adjustable overload protection from 280 A to 400 A (Ir) and short-circuit pickup adjustable 5 to 10 times In (Ii). This is a line-protection breaker, not a motor-protection device — the TM240 curve is sized for cable and busbar protection in distribution panels. ## Deployment context The 55 kA SCCR at 415 V makes it suitable for main or feeder protection in industrial distribution panels where fault currents are high — think mining conveyors, crusher feed circuits, or mill motor control centers where the transformer secondary can deliver serious fault energy. The adjustable Ir (280-400 A) lets you dial in the exact cable rating without swapping trip units.","metaTitle":"Siemens 3VA1340-5EF32-0KB0 Circuit Breaker, 55kA @ 415V","metaDescription":"Siemens 3VA1340-5EF32-0KB0 IEC frame 400 circuit breaker, 55kA @ 415V, 3-pole, TM240 trip, In=400A. Current lifecycle stage. Quoted 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=1420826&mlfb=3VA1340-5EF32-0KB0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1340-5EF32-0KB0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy the 3VA1340-5EF32-0KB0 and how is it quoted?","answer":"Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — no stock count or price is published here, but the supply channel is open."},{"question":"What does the TM240 trip unit mean for protection settings?","answer":"The TM240 thermal-magnetic trip provides adjustable overload protection (Ir) from 280 A to 400 A and fixed short-circuit pickup (Ii) adjustable 5 to 10 times In. This is a line-protection curve for cables and busbars, not a motor-protection curve — use it for feeder or main breaker duty in distribution panels."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1340-5EF32-0KB0","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/3VA1340-5EF32-0KB0 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}}