{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1125-4GE42-0AA0-ZD00","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1125-4GE42-0AA0-ZD00","canonicalUrl":"https://aoctrl.com/siemens/3VA1125-4GE42-0AA0-ZD00","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1125-4GE42-0AA0-ZD00","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 3VA1 series, IEC frame 160, breaking capacity class S, 4-pole MCCB, 25 A, 36 kA @ 415 V, thermal-magnetic TM220 trip unit.","salesMarkdown":"The Siemens 3VA1125-4GE42-0AA0-ZD00 is a 4-pole IEC frame 160 molded case circuit breaker with breaking capacity class S — rated Icu = 36 kA at 415 V AC. It ships with a TM220 thermal-magnetic trip unit, fixed at In = 25 A, with overload protection adjustable Ir = 18 A to 25 A and instantaneous short-circuit pickup Ii = 12.8 × In (320 A at the 25 A setting). The N-conductor protection is set to 100 %. ## Where it lands in a panel This is a DIN-rail-mount MCCB sized for a 160 A frame, so it occupies the same footprint as other 3VA1 frame breakers. The 4-pole configuration covers three-phase-plus-neutral circuits — common in distribution panels feeding mixed single-phase and three-phase loads. The TM220 trip curve is thermal-magnetic: the thermal element handles sustained overloads (the Ir adjustment band), and the magnetic element clears short-circuit faults instantaneously at the Ii threshold. No electronic trip unit here, so no auxiliary power supply needed for the trip logic.","metaTitle":"Siemens 3VA1125-4GE42-0AA0-ZD00 Circuit Breaker, 25A, 36kA @","metaDescription":"Siemens 3VA1125-4GE42-0AA0-ZD00 IEC frame 160 MCCB, 25A, 36kA breaking capacity @ 415V, 4-pole, TM220 thermal-magnetic trip. Current production. Available 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/1087f9e9332ee8d82519893faa49c242.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1667667&mlfb=3VA1125-4GE42-0AA0-ZD00","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1125-4GE42-0AA0-ZD00/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA1125-4GE42-0AA0-ZD00 and get a price?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time."},{"question":"What is the breaking capacity of this breaker?","answer":"The Icu (ultimate breaking capacity) is 36 kA at 415 V AC, which is the class S rating for the 3VA1 IEC frame 160 platform."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1125-4GE42-0AA0-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/3VA1125-4GE42-0AA0-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}}