{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1120-5GD42-0AA0-ZD00","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1120-5GD42-0AA0-ZD00","canonicalUrl":"https://aoctrl.com/siemens/3VA1120-5GD42-0AA0-ZD00","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1120-5GD42-0AA0-ZD00","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 3VA1 IEC frame 160, breaking capacity class M, Icu=55kA @ 415V, 4-pole, line protection TM210, FTFM, In=20A, Ir=20A fixed, Ii=16 x In, N conductor protection 100%, nut keeper kit for DC Power OEM in China.","salesMarkdown":"The Siemens 3VA1120-5GD42-0AA0-ZD00 is a 4-pole IEC frame 160 molded-case circuit breaker with a 55 kA interrupting capacity at 415 V — that's the class M breaking capacity, meaning it clears faults up to that level without the arc flashing over, which is the spec that decides whether this breaker holds its downstream gear in a high-fault panel. Overload protection is fixed at 20 A (Ir = 20 A) via the TM210 thermal-magnetic trip unit; short-circuit pickup is set at 16 times the rated current (Ii = 16 x In), so it rides through motor inrush but trips fast on a bolted fault. The neutral conductor is protected at 100% — no derating for the N pole. This variant includes a nut keeper kit and is configured for DC Power OEM applications in China — the nut keeper keeps the terminal hardware from backing off under vibration in a panel that ships as a subassembly. The nut keeper kit and the China OEM configuration are part of the order code, so the quote matches exactly what lands on the dock.","metaTitle":"Siemens 3VA1120-5GD42-0AA0-ZD00 Circuit Breaker, 55kA @ 415V","metaDescription":"Siemens 3VA1120-5GD42-0AA0-ZD00 IEC frame 160 circuit breaker, 55kA breaking capacity at 415V, 4-pole, 20A fixed overload, 16xIn short-circuit. Current production. Available to ord","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/6ce8a1f3a3eb50acb850e54e73e7c5c1.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1667639&mlfb=3VA1120-5GD42-0AA0-ZD00","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1120-5GD42-0AA0-ZD00/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of this breaker?","answer":"Icu is 55 kA at 415 V, which is the class M breaking capacity for the 3VA1 IEC frame 160 platform."},{"question":"What is the overload and short-circuit protection setting?","answer":"Overload protection Ir is fixed at 20 A; short-circuit protection Ii is fixed at 16 times In (320 A)."},{"question":"Where can I buy 3VA1120-5GD42-0AA0-ZD00?","answer":"Sourced and quoted to order against an RFQ through independent distribution; current pricing and availability confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1120-5GD42-0AA0-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/3VA1120-5GD42-0AA0-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}}