{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1120-5EF42-0AA0-ZD00","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1120-5EF42-0AA0-ZD00","canonicalUrl":"https://aoctrl.com/siemens/3VA1120-5EF42-0AA0-ZD00","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1120-5EF42-0AA0-ZD00","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 3VA1 IEC frame 160, breaking capacity class M, 4-pole, 20A, overload protection Ir=14A...20A, short-circuit protection Ii=8...16 x In, N conductor unprotected, nut keeper kit for DC Power OEM in China.","salesMarkdown":"The Siemens 3VA1120-5EF42-0AA0-ZD00 is a 4-pole circuit breaker from the 3VA1 IEC frame 160 series, rated for line protection with a TM240 thermal-magnetic trip unit. Short-circuit protection is set at Ii=8 to 16 x In, so the magnetic trip responds between 160 A and 320 A depending on the dial setting. ## Deployment context The nut keeper kit included in the suffix (ZD00) is a DC Power OEM variant, so this breaker ships with hardware for DC-side mounting in OEM equipment built in China. That's a detail to note if you're replacing a standard 3VA1: the ZD00 suffix changes the accessory kit, not the electrical ratings.","metaTitle":"Siemens 3VA1120-5EF42-0AA0-ZD00 Circuit Breaker, 20A, 55kA @","metaDescription":"Siemens 3VA1120-5EF42-0AA0-ZD00 circuit breaker, IEC frame 160, 4-pole, 20A, 55kA breaking capacity @ 415V. Current lifecycle stage. Sourced 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/291c47d8dbefab3fbf6a1ef0cb77a9dd.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1667638&mlfb=3VA1120-5EF42-0AA0-ZD00","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1120-5EF42-0AA0-ZD00/alternatives.json"},"ai":{"faq":[{"question":"How do I get current pricing and availability for 3VA1120-5EF42-0AA0-ZD00?","answer":"Submit an RFQ through the storefront. Pricing and stock are confirmed at quote time through independent distribution channels."},{"question":"What is the breaking capacity of this breaker?","answer":"55 kA at 415 V, which is the Icu (ultimate short-circuit breaking capacity) for the class M frame."},{"question":"What does the ZD00 suffix mean?","answer":"The ZD00 suffix indicates a nut keeper kit for DC Power OEM in China — it changes the accessory kit, not the electrical ratings."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1120-5EF42-0AA0-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/3VA1120-5EF42-0AA0-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}}