{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1120-4EF42-0AA0-ZD00","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1120-4EF42-0AA0-ZD00","canonicalUrl":"https://aoctrl.com/siemens/3VA1120-4EF42-0AA0-ZD00","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1120-4EF42-0AA0-ZD00","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 3VA1 IEC frame 160, breaking capacity class S, 36kA @ 415V, 4-pole, TM240 thermal-magnetic trip unit, In=20A, overload Ir=14A...20A, short-circuit Ii=8...16 x In, N conductor unprotected, nut keeper kit, DC Power OEM China.","salesMarkdown":"The Siemens 3VA1120-4EF42-0AA0-ZD00 is a 4-pole IEC frame 160 circuit breaker from the 3VA1 series, configured for line protection with a TM240 thermal-magnetic trip unit. The TM240 trip provides adjustable overload protection (Ir = 14 A to 20 A) and fixed short-circuit protection (Ii = 8 to 16 × In), so the 20 A In rating lets you dial the thermal pickup to match the actual load current on the BOM. ## Deployment context Mounts in a standard IEC panel on DIN rail or via the frame's bolt-on footprint. The 4-pole configuration with unprotected N conductor suits 3-phase + neutral systems where the neutral does not require overcurrent protection — common in distribution sub-feed panels.","metaTitle":"Siemens 3VA1120-4EF42-0AA0-ZD00 Circuit Breaker, 20A, 36kA @","metaDescription":"Siemens 3VA1120-4EF42-0AA0-ZD00 IEC frame 160 circuit breaker, 20A, 36kA breaking capacity at 415V, 4-pole, TM240 thermal-magnetic trip, current lifecycle stage. Quoted to order ag","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/5be37f3ce450d68ed2fe7d7c4e223d49.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1667629&mlfb=3VA1120-4EF42-0AA0-ZD00","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1120-4EF42-0AA0-ZD00/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of this breaker?","answer":"The breaking capacity is 36 kA at 415 V (IEC class S), which means it can safely interrupt fault currents up to that level without requiring upstream coordination."},{"question":"Where can I buy 3VA1120-4EF42-0AA0-ZD00 and how is it quoted?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1120-4EF42-0AA0-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/3VA1120-4EF42-0AA0-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}}