{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1125-3GD42-0AA0-ZD00","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1125-3GD42-0AA0-ZD00","canonicalUrl":"https://aoctrl.com/siemens/3VA1125-3GD42-0AA0-ZD00","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1125-3GD42-0AA0-ZD00","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 3VA1 IEC frame 160, 4-pole, 25A, breaking capacity class N, Icu=25kA @ 415V, TM210 line protection, FTFM, fixed Ir=25A, fixed Ii=12.8 x In, N conductor protection 100%, nut keeper kit, DC Power OEM China.","salesMarkdown":"## What this 3VA1 frame breaker carries The Siemens 3VA1125-3GD42-0AA0-ZD00 is a current-production IEC frame 160 molded-case circuit breaker, 4-pole, rated 25 A with a breaking capacity of 25 kA at 415 V (class N). It's built for line protection using a TM210 thermal-magnetic trip unit — fixed overload protection set at Ir = 25 A and fixed short-circuit protection at Ii = 12.8 x In. The N conductor is protected at 100%. The Ii = 12.8 x In (about 320 A instantaneous) gives a high magnetic pickup, which avoids nuisance trips on motor inrush or transformer energization but still clears hard faults fast. ## Where it fits — panel integration The nut keeper kit (included per the OEM spec) helps when landing lugs in a high-vibration environment — keeps the hardware from backing off on a pump or conveyor line. The 100% N conductor protection means the neutral pole is fully rated, not reduced, so it's suited for 4-wire systems where neutral harmonics or unbalanced loads are a concern.","metaTitle":"Siemens 3VA1125-3GD42-0AA0-ZD00 25A Circuit Breaker, 25kA @","metaDescription":"Siemens 3VA1125-3GD42-0AA0-ZD00 circuit breaker, IEC frame 160, 4-pole, 25A, 25kA @ 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/c0ad222a7a52df2c83bb2581cc513266.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1667657&mlfb=3VA1125-3GD42-0AA0-ZD00","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1125-3GD42-0AA0-ZD00/alternatives.json"},"ai":{"faq":[{"question":"What is 3VA1125-3GD42-0AA0-ZD00 used for?","answer":"It's a 4-pole, 25 A molded-case circuit breaker for line protection in IEC distribution panels, rated for 25 kA interrupting capacity at 415 V. It's used to protect branch circuits feeding motors, transformers, or general loads where a fixed thermal-magnetic trip at 25 A is required."},{"question":"Where can I buy 3VA1125-3GD42-0AA0-ZD00?","answer":"This part is sourced to order against an RFQ through independent industrial-automation distribution. Submit a request for quote to confirm current availability and pricing — no stock count or lead-time number is published here."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1125-3GD42-0AA0-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/3VA1125-3GD42-0AA0-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}}