{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1120-3GE42-0AA0-ZD00","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1120-3GE42-0AA0-ZD00","canonicalUrl":"https://aoctrl.com/siemens/3VA1120-3GE42-0AA0-ZD00","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1120-3GE42-0AA0-ZD00","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 3VA1 IEC frame 160, breaking capacity class N, 4-pole circuit breaker, 20A, 25kA @ 415V, TM220 line protection, ATFM, with nut keeper kit for DC Power OEM in China.","salesMarkdown":"The Siemens 3VA1120-3GE42-0AA0-ZD00 is a 4-pole circuit breaker from the 3VA1 IEC frame 160 series, rated at 20 A with a breaking capacity of 25 kA at 415 V (class N). It carries TM220 line protection with an ATFM trip unit — overload protection adjustable from 14 A to 20 A, and short-circuit protection set at 16 x In. The N conductor is protected at 100%, and the unit includes a nut keeper kit, specified for DC Power OEM applications in China. The 16 x In instantaneous trip (Ii) means it clears hard shorts fast, but won't nuisance-trip on moderate inrush from a transformer or motor start. The 100% N protection is non-standard for IEC breakers — it keeps the neutral fully rated, which matters for harmonic-rich loads or single-phase fault return paths.","metaTitle":"Siemens 3VA1120-3GE42-0AA0-ZD00 Circuit Breaker, 20A, 25kA @","metaDescription":"Siemens 3VA1120-3GE42-0AA0-ZD00 IEC frame 160 circuit breaker, 20A, 25kA breaking capacity @ 415V, 4-pole, TM220. Current lifecycle stage. Quoted on request.","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/f15944ce6339463cebcef03518e326e1.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1667622&mlfb=3VA1120-3GE42-0AA0-ZD00","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1120-3GE42-0AA0-ZD00/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of this circuit breaker?","answer":"The breaking capacity is 25 kA at 415 V (IEC breaking capacity class N)."},{"question":"What does the TM220 trip unit mean?","answer":"TM220 indicates a thermal-magnetic trip unit with adjustable overload protection (Ir = 14–20 A) and fixed short-circuit protection at 16 x In (320 A)."},{"question":"Where can I buy 3VA1120-3GE42-0AA0-ZD00?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution channels. 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/3VA1120-3GE42-0AA0-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/3VA1120-3GE42-0AA0-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}}