{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1120-4GD42-0AA0-ZD00","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1120-4GD42-0AA0-ZD00","canonicalUrl":"https://aoctrl.com/siemens/3VA1120-4GD42-0AA0-ZD00","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1120-4GD42-0AA0-ZD00","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 3VA1 IEC frame 160, breaking capacity class S, 4-pole, line protection TM210, FTFM, In=20A, overload Ir=20A fixed, short-circuit Ii=16 x In, N conductor protection 100%, nut keeper kit for DC Power OEM in China.","salesMarkdown":"The Siemens 3VA1120-4GD42-0AA0-ZD00 is a 4-pole IEC frame 160 circuit breaker with breaking capacity class S, rated Icu=36kA at 415 V. The thermal-magnetic trip unit (TM210) is set with a fixed overload Ir=20 A and a fixed short-circuit pickup Ii=16 x In (320 A), so it's a dedicated line-protection device for a 20 A circuit, not adjustable in the field. The 4-pole configuration with 100% N conductor protection suits three-phase plus neutral distribution in IEC-based switchboards — common in OEM builds for machinery or sub-distribution boards. The included nut keeper kit is a detail for DC Power OEM applications in China, meaning the factory-assembled busbar connections stay torqued under vibration.","metaTitle":"Siemens 3VA1120-4GD42-0AA0-ZD00 Circuit Breaker, 20A, 36kA @","metaDescription":"Siemens 3VA1120-4GD42-0AA0-ZD00 IEC frame 160 circuit breaker, 20A, 36kA breaking capacity @ 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"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/85ec49caa46883636a67ab0c2890a57c.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1667630&mlfb=3VA1120-4GD42-0AA0-ZD00","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1120-4GD42-0AA0-ZD00/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA1120-4GD42-0AA0-ZD00?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution; availability and current pricing are confirmed at quote time."},{"question":"What are the key ratings of 3VA1120-4GD42-0AA0-ZD00?","answer":"It is a 4-pole IEC frame 160 breaker with breaking capacity class S, Icu=36kA at 415V, In=20A, fixed overload Ir=20A, and fixed short-circuit Ii=16 x In."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1120-4GD42-0AA0-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/3VA1120-4GD42-0AA0-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}}