{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1120-4ED42-0AA0-ZD00","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1120-4ED42-0AA0-ZD00","canonicalUrl":"https://aoctrl.com/siemens/3VA1120-4ED42-0AA0-ZD00","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1120-4ED42-0AA0-ZD00","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 3VA1 series, IEC frame 160, breaking capacity class S, 4-pole circuit breaker, In=20A, Icu=36kA @ 415V, TM210 line protection, FTFM, Ir=20A fixed, Ii=16 x In, N conductor unprotected, nut keeper kit, OEM China.","salesMarkdown":"## What this breaker is and what the ratings mean The Siemens 3VA1120-4ED42-0AA0-ZD00 is a 4-pole IEC frame 160 circuit breaker from the 3VA1 series, built for line protection with a TM210 thermal-magnetic trip unit. Its breaking capacity is 36 kA at 415 V (class S), meaning it can safely interrupt a fault current up to that level without welding the contacts or cascading an arc upstream — critical for panel SCCR compliance. The fixed overload protection is set at Ir = 20 A, and the short-circuit pickup is fixed at Ii = 16 × In (320 A), so the magnetic trip reacts fast on a hard short but lets motor inrush through. This variant ships with a nut keeper kit and is designated for DC Power OEM builds in China.","metaTitle":"Siemens 3VA1120-4ED42-0AA0-ZD00 Circuit Breaker, 20A, 36kA @","metaDescription":"Siemens 3VA1120-4ED42-0AA0-ZD00 IEC frame 160 circuit breaker, 4-pole, 20A, 36kA breaking capacity @ 415V. Current lifecycle stage. Sourced to order against an 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/fd0bbfb9f20168858be518429f75bd24.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1667625&mlfb=3VA1120-4ED42-0AA0-ZD00","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1120-4ED42-0AA0-ZD00/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA1120-4ED42-0AA0-ZD00 and get a price?","answer":"This part is sourced to order against an RFQ through independent distribution. Submit an RFQ for current availability and pricing; stock positions and lead times are confirmed at quote time."},{"question":"What are the key ratings of 3VA1120-4ED42-0AA0-ZD00?","answer":"IEC frame 160, 4-pole, breaking capacity class S at 36 kA @ 415 V. Fixed overload Ir = 20 A, fixed short-circuit Ii = 16 × In (320 A). TM210 thermal-magnetic line protection with FTFM. Includes nut keeper kit for DC Power OEM in China."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1120-4ED42-0AA0-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/3VA1120-4ED42-0AA0-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}}