{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1225-4GF42-0AA0-ZD00","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1225-4GF42-0AA0-ZD00","canonicalUrl":"https://aoctrl.com/siemens/3VA1225-4GF42-0AA0-ZD00","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1225-4GF42-0AA0-ZD00","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 3VA1 IEC frame 250 circuit breaker, breaking capacity class S, Icu=36kA @ 415V, 4-pole, line protection TM240, ATAM, In=250A, overload protection Ir=175A...250A, short-circuit protection Ii=5...10 x In, N conductor protection 100%, nut keeper kit for DC Power OEM in China.","salesMarkdown":"The Siemens 3VA1225-4GF42-0AA0-ZD00 is a 4-pole IEC frame 250 molded case circuit breaker from the 3VA1 series, rated for line protection with a TM240 thermal-magnetic trip unit. For a panel on a 400 V industrial supply with a transformer rating above 1 MVA, that SCCR typically clears the fault without needing a current-limiting upstream fuse. The adjustable Ir (175–250 A) lets the thermal trip match the actual load current, so an MRO planner can dial it to the exact cable or bus rating on site. The magnetic Ii range of 5–10 x In (1250–2500 A) handles motor starting currents up to about 8x FLA for a 250 A motor circuit, which covers most IEC frame 250 applications. ## Deployment Context The nut keeper kit suggests this variant is destined for a DC Power OEM in China, likely for a solar or battery energy storage system where the breaker mounts in a pre-drilled panel or enclosure. The 3VA1 frame is designed for DIN-rail or screw-mount integration in standard distribution boards.","metaTitle":"Siemens 3VA1225-4GF42-0AA0-ZD00 Circuit Breaker, 250A, 36kA","metaDescription":"Siemens 3VA1225-4GF42-0AA0-ZD00 IEC frame 250 circuit breaker, 36kA @ 415V breaking capacity, 4-pole, TM240 thermal-magnetic trip, In=250A, Ir=175-250A, Ii=5-10xIn. Current lifecyc","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/ee0aacbef54528c8b5a21048b40c51f5.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1667944&mlfb=3VA1225-4GF42-0AA0-ZD00","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1225-4GF42-0AA0-ZD00/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of 3VA1225-4GF42-0AA0-ZD00?","answer":"The ultimate short-circuit breaking capacity Icu is 36 kA at 415 V (class S)."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1225-4GF42-0AA0-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/3VA1225-4GF42-0AA0-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}}