{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1125-5GF42-0AA0-ZD00","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1125-5GF42-0AA0-ZD00","canonicalUrl":"https://aoctrl.com/siemens/3VA1125-5GF42-0AA0-ZD00","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1125-5GF42-0AA0-ZD00","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 3VA1 IEC frame 160, 4-pole MCCB, breaking capacity class M, Icu=55kA @ 415V, line protection TM240, ATAM, In=25A, Ir=18A...25A, Ii=6.4...12.8 x In, N conductor protection 100%, nut keeper kit for DC Power OEM in China.","salesMarkdown":"The Siemens 3VA1125-5GF42-0AA0-ZD00 is a 4-pole molded case circuit breaker on the IEC 160 A frame, rated for 55 kA breaking capacity at 415 V AC — that is the Icu (ultimate breaking capacity) under class M, meaning it can safely interrupt a fault up to that level once and still carry rated current afterward. For a 25 A line protection breaker, that is serious fault-current headroom; it stays coordinated with downstream devices without cascading upstream. Overload protection is adjustable: Ir from 18 A to 25 A via the TM240 thermal-magnetic trip unit. Short-circuit pickup Ii spans 6.4 to 12.8 times In, so at the 25 A setting that is 160 to 320 A magnetic trip. The 100% N-conductor protection means the neutral pole is fully rated — no derating needed for unbalanced loads or harmonic-rich circuits. The frame is the standard 3VA1 160 A platform, so it mounts in the same panel cutouts and bus-bar arrangements as other 3VA1 breakers.","metaTitle":"Siemens 3VA1125-5GF42-0AA0-ZD00 Circuit Breaker, 55kA @ 415V","metaDescription":"Siemens 3VA1125-5GF42-0AA0-ZD00 circuit breaker, IEC frame 160, 55kA breaking capacity @ 415V, 4-pole, 25A adjustable overload. Current lifecycle stage. Quoted to order.","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/a558f92f0dcc4fb44b35de9cdbff9d9b.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1667677&mlfb=3VA1125-5GF42-0AA0-ZD00","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1125-5GF42-0AA0-ZD00/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of this breaker?","answer":"Icu is 55 kA at 415 V AC, class M. That is the ultimate short-circuit capacity the breaker can interrupt once and still be functional afterward."},{"question":"What overload and short-circuit settings does it have?","answer":"Overload protection Ir is adjustable from 18 A to 25 A. Short-circuit pickup Ii is adjustable from 6.4 to 12.8 times In (160 to 320 A at the 25 A setting)."},{"question":"Where can I buy the 3VA1125-5GF42-0AA0-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/3VA1125-5GF42-0AA0-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/3VA1125-5GF42-0AA0-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}}