{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2340-5KP42-0DA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2340-5KP42-0DA0","canonicalUrl":"https://aoctrl.com/siemens/3VA2340-5KP42-0DA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2340-5KP42-0DA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 3VA2 IEC frame 400 circuit breaker, breaking capacity class M, Icu=55kA @ 415V, 4-pole, ETU850 LSI electronic trip, In=400A, undervoltage release 208-230 V AC 50/60 Hz.","salesMarkdown":"The electronic trip unit is an ETU850 with LSI protection: Long-time (overload) pickup Ir adjustable 160 A to 400 A, Short-time (short-circuit with delay) Isd adjustable 0.6 to 10× In, and Instantaneous Ii adjustable 1.5 to 10× In. That LSI curve gives you selectivity downstream — you can coordinate with feeder breakers so a fault on a branch trips only the branch breaker, not this main. The built-in undervoltage release is rated 208-230 V AC 50/60 Hz, so if control power drops, the breaker opens automatically. The description also notes an undervoltage release accessory for 3VA1 — that's the release itself, already fitted in this variant, so verify your control voltage matches the 208-230 V AC coil before wiring. The 400 A continuous rating (In) and the 160-400 A overload range (Ir) mean this breaker fits as a main or large feeder in a 400 A panelboard. Class M (medium) breaking capacity is the standard choice for most industrial switchboards; class H (high) would be needed for high-fault locations like near a transformer secondary. The 4-pole configuration with adjustable neutral protection is useful for 3-phase + N systems where you want to protect the neutral conductor against overload, common in panels feeding mixed single-phase and three-phase loads. The nut keeper kit is a captive hardware feature that prevents loose nuts falling into live buswork during installation — a practical panel-builder detail.","metaTitle":"Siemens 3VA2340-5KP42-0DA0 Circuit Breaker, 55kA @ 415V, 400","metaDescription":"Siemens 3VA2340-5KP42-0DA0 IEC frame 400 circuit breaker, 55kA Icu @ 415V, 4-pole, ETU850 LSI trip, 400A In. Current production. Available 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/c1b3b6c5f6d67465025ac41848ceb75e.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1389978&mlfb=3VA2340-5KP42-0DA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2340-5KP42-0DA0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA2340-5KP42-0DA0 and get a price?","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 price and lead time."},{"question":"What are the key ratings of 3VA2340-5KP42-0DA0?","answer":"IEC frame 400, 55 kA Icu at 415 V, 4-pole, ETU850 LSI electronic trip, In=400 A, Ir adjustable 160-400 A, Isd 0.6-10× In, Ii 1.5-10× In, with an undervoltage release 208-230 V AC 50/60 Hz."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2340-5KP42-0DA0","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/3VA2340-5KP42-0DA0 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}}