{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2440-5MQ32-0AC0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2440-5MQ32-0AC0","canonicalUrl":"https://aoctrl.com/siemens/3VA2440-5MQ32-0AC0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2440-5MQ32-0AC0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2 series, Molded case circuit breaker, 3VA2440-5MQ32-0AC0, IEC frame 630, breaking capacity class M, Icu=55kA @ 415V, 3-pole, motor protection ETU860M LSIG, In=400A.","salesMarkdown":"The Siemens SENTRON 3VA2440-5MQ32-0AC0 is a 3-pole molded case circuit breaker on the IEC frame 630 platform, rated In=400A with a breaking capacity class M delivering Icu=55kA at 415 V AC. The ETU860M electronic trip unit provides LSIG protection — overload (L), short-time (S), instantaneous (I), and ground-fault (G) — with adjustable settings: Ir from 160 A to 400 A, Isd from 1.2 to 15 x In, Ii from 3 to 15 x In, and Ig from 0.2 to 1 x In with a ground-fault time delay tg of 0.05 to 0.8 s. This makes it a motor-protection MCCB, not a line-protection generalist — the LSIG curve and the ETU860M's communication-ready design target motor feeder circuits where selectivity and ground-fault coordination matter. No successor or phase-out notice is recorded. The ETU860M is the top-tier trip unit in the 3VA2 family; it supports communication (PROFIBUS, PROFINET, Modbus TCP via optional modules) and offers a wider adjustment range than the ETU330 or ETU560 found on line-protection siblings. The LSIG protection set means this breaker handles both phase and ground faults, so it can serve as the main feeder breaker in a panel supplying multiple motor starters where ground-fault coordination is required by code. ## Panel integration The 3VA2 frame 630 mounts with nut keeper kits on both sides for the main current circuit — front-terminal connection, not rear or plug-in. The description notes a nut keeper kit is included. Two auxiliary switch changeover contacts are integrated. The IP40 front protection is standard for panel-mounted breakers; the enclosure itself provides the overall IP rating.","metaTitle":"Siemens 3VA2440-5MQ32-0AC0 SENTRON MCCB, 400A, ETU860M LSIG,","metaDescription":"Siemens SENTRON 3VA2440-5MQ32-0AC0 molded case circuit breaker, 400A frame, ETU860M LSIG motor protection, Icu=55kA @ 415V. 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","Product Brand Name":"SENTRON","Product Designation":"Molded case circuit breaker"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/0eb36652ce522f093395d6bd0dd27e34.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1401101&mlfb=3VA2440-5MQ32-0AC0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2440-5MQ32-0AC0/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2440-5MQ32-0AC0","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/3VA2440-5MQ32-0AC0 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}}