{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1125-5EF42-0AA0-ZD00","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1125-5EF42-0AA0-ZD00","canonicalUrl":"https://aoctrl.com/siemens/3VA1125-5EF42-0AA0-ZD00","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1125-5EF42-0AA0-ZD00","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 3VA1 IEC frame 160, breaking capacity class M, Icu=55kA @ 415V, 4-pole, line protection TM240, ATAM, In=25A, overload Ir=18A...25A, short-circuit Ii=6.4...12.8 x In, N conductor unprotected, nut keeper kit for DC Power OEM in China.","salesMarkdown":"The Siemens 3VA1125-5EF42-0AA0-ZD00 is a 4-pole IEC frame 160 molded case circuit breaker with a 25 A thermal-magnetic trip unit (TM240, ATAM). The overload protection band Ir=18...25 A and short-circuit protection Ii=6.4...12.8 x In give you field-adjustable pickup, so you can dial in the trip curve to match motor inrush or cable protection without swapping the breaker. ## Deployment context The 4-pole configuration with an unprotected neutral conductor suits it for three-phase + N systems where the neutral does not require overcurrent protection — common in North American and IEC distribution panels. The nut keeper kit is a small but useful detail: it keeps the terminal hardware captive during wiring, saving time on a panel build.","metaTitle":"Siemens 3VA1125-5EF42-0AA0-ZD00 Circuit Breaker, 25A, 55kA @","metaDescription":"Siemens 3VA1125-5EF42-0AA0-ZD00 IEC frame 160 MCCB, 4-pole, 25A, Icu=55kA @ 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/4e85624f39a1feb2d87bc2916f3b57ff.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1667674&mlfb=3VA1125-5EF42-0AA0-ZD00","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1125-5EF42-0AA0-ZD00/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA1125-5EF42-0AA0-ZD00 and get a price?","answer":"This part is sourced to order against an RFQ through independent distribution. Submit an RFQ for current availability and pricing — confirmed at quote time."},{"question":"What is the closest alternative to 3VA1125-5EF42-0AA0-ZD00 in the same family?","answer":"Within the 3VA1 frame, the standard catalog variant without the OEM-specific nut keeper kit and DC Power marking is the closest functional match — same frame, same trip unit, same breaking capacity. The difference is only in the accessory kit and labeling."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1125-5EF42-0AA0-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/3VA1125-5EF42-0AA0-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}}