{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1125-5GE42-0AA0-ZD00","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1125-5GE42-0AA0-ZD00","canonicalUrl":"https://aoctrl.com/siemens/3VA1125-5GE42-0AA0-ZD00","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1125-5GE42-0AA0-ZD00","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 3VA1 IEC frame 160 MCCB, breaking capacity class M, 4-pole, 25A, Icu=55kA @ 415V, line protection TM220, ATFM, overload Ir=18A...25A, short-circuit Ii=12.8 x In, N conductor protection 100%, nut keeper kit for DC Power OEM in China.","salesMarkdown":"The Siemens 3VA1125-5GE42-0AA0-ZD00 is a 4-pole IEC frame 160 molded case circuit breaker with a 25 A rating and a breaking capacity class M — meaning it interrupts 55 kA at 415 V without venting or damage to the bus. That Icu figure governs fault-energy handling in a panel; if your SCCR study calls for 55 kA at that voltage, this breaker holds the line without cascading upstream. It ships with a TM220 thermal-magnetic trip unit, adjustable overload protection from 18 A to 25 A, and a fixed short-circuit pickup of 12.8 x In. The 100% N-conductor protection and the included nut keeper kit suggest this variant was configured for a DC Power OEM build in China — so the neutral pole is fully rated, not just switched. If your transformer or generator can deliver a fault current above that number, you need a higher-breaking-capacity frame or a current-limiting upstream device. The adjustable Ir (18-25 A) lets you dial in the overload protection to match the cable or load without swapping the trip unit. The 4-pole configuration with 100% N protection means the neutral pole is protected against overload and short-circuit, not just switched. That's required for systems where the neutral carries unbalanced load current — common in 3-phase 4-wire distribution panels.","metaTitle":"Siemens 3VA1125-5GE42-0AA0-ZD00 Circuit Breaker, 25A, 55kA @","metaDescription":"Siemens 3VA1125-5GE42-0AA0-ZD00 IEC frame 160 MCCB, 4-pole, 25A, 55kA Icu @ 415V. Lifecycle stage: current. 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/1f6362e6c3579cb1616bd9ffd1191bff.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1667676&mlfb=3VA1125-5GE42-0AA0-ZD00","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1125-5GE42-0AA0-ZD00/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of this breaker?","answer":"It has a breaking capacity class M with Icu = 55 kA at 415 V, meaning it can safely interrupt a fault current up to 55 kA at that voltage."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1125-5GE42-0AA0-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/3VA1125-5GE42-0AA0-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}}