{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2340-5JQ42-0AK0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2340-5JQ42-0AK0","canonicalUrl":"https://aoctrl.com/siemens/3VA2340-5JQ42-0AK0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2340-5JQ42-0AK0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 3VA2 series, IEC frame 400, breaking capacity class M, 4-pole circuit breaker, In=400A, Icu=55kA @ 415V, ETU560 LSIG electronic trip unit, with auxiliary switch and trip alarm.","salesMarkdown":"## What this 3VA2 breaker delivers The Siemens 3VA2340-5JQ42-0AK0 is a 4-pole molded case circuit breaker in the 3VA2 IEC frame 400 platform, rated In=400A with an interrupting capacity Icu=55kA at 415V AC — breaking capacity class M. The ETU560 electronic trip unit gives you LSIG protection: long-time (L) overload, short-time (S) short-circuit with adjustable delay, instantaneous (I), and ground-fault (G) that can be switched off. Overload protection Ir is adjustable from 160A to 400A, so you dial in the cable or bus rating, not the other way around. ## Trip unit and protection settings Short-circuit protection Isd adjusts 0.6 to 10x In, and the instantaneous pickup Ii covers 1.5 to 10x In — wide enough to ride through motor inrush on a 400A feeder while still catching a hard fault. The ground-fault pickup Ig ranges 0.2 to 1x In with a time delay tg of 0.05 to 0.8 seconds, and you can switch it off entirely if the downstream scheme already handles GF. Neutral conductor protection is adjustable from OFF up to 100% of In. It occupies a standard draw-out cradle or bolted connection — no DIN-rail snap-on here. The ETU560 is powered by integral current transformers, so no control power is needed for the trip unit itself. The auxiliary and alarm switches give the PLC or BMS a dry-contact status without an extra interface relay.","metaTitle":"Siemens 3VA2340-5JQ42-0AK0 Circuit Breaker, 400A, 55kA @ 415","metaDescription":"Siemens 3VA2340-5JQ42-0AK0 circuit breaker, 3VA2 IEC frame 400, breaking capacity class M, Icu=55kA @ 415V, 4-pole, ETU560 LSIG protection, In=400A. Current lifecycle stage. Availa","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=1449965&mlfb=3VA2340-5JQ42-0AK0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2340-5JQ42-0AK0/alternatives.json"},"ai":{"faq":[{"question":"How do I get pricing and availability for 3VA2340-5JQ42-0AK0?","answer":"Submit an RFQ through this listing. We source this part through our distribution network and confirm availability and current pricing at quote time — no automated stock numbers here, just a real quote."},{"question":"What does the ETU560 LSIG protection cover?","answer":"LSIG stands for long-time overload (L), short-time short-circuit (S), instantaneous (I), and ground-fault (G). The ETU560 gives you adjustable Ir from 160A to 400A, Isd from 0.6 to 10x In, Ii from 1.5 to 10x In, and Ig from 0.2 to 1x In with a time delay of 0.05 to 0.8 seconds. Neutral protection is adjustable from OFF to 100% of In."},{"question":"What accessories are included with this breaker?","answer":"It ships with a nut keeper kit, one auxiliary switch (changeover H), and one trip alarm switch (changeover) — wired-in status and alarm feedback without opening the cover."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2340-5JQ42-0AK0","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/3VA2340-5JQ42-0AK0 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}}