{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1125-5EE42-0AA0-ZD00","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1125-5EE42-0AA0-ZD00","canonicalUrl":"https://aoctrl.com/siemens/3VA1125-5EE42-0AA0-ZD00","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1125-5EE42-0AA0-ZD00","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 3VA1 IEC frame 160 MCCB, breaking capacity class M, Icu=55 kA @ 415 V, 4-pole, TM220 thermal-magnetic trip unit, In=25 A, Ir=18…25 A, Ii=12.8 x In, N conductor unprotected, nut keeper kit, DC Power OEM variant.","salesMarkdown":"The Siemens 3VA1125-5EE42-0AA0-ZD00 is a 4-pole IEC frame 160 molded-case circuit breaker with a 55 kA interrupting capacity at 415 V (breaking capacity class M). It ships with a TM220 thermal-magnetic trip unit set for line protection: overload adjustable Ir=18…25 A, instantaneous fixed at Ii=12.8 x In (320 A at the 25 A rating). The neutral conductor is unprotected — this is a 3-pole + unprotected N configuration, common in delta or corner-grounded systems where the neutral does not require overcurrent protection. ## Deployment context Mounts in a standard IEC distribution board or MCC lineup on a DIN rail or screw-fixed backplate. The nut keeper kit (included) simplifies panel wiring when using box lugs. The DC Power OEM suffix flags a variant tailored for DC-side distribution in Chinese OEM builds — verify the DC voltage rating against your bus before committing the BOM line.","metaTitle":"Siemens 3VA1125-5EE42-0AA0-ZD00 MCCB, 55 kA @ 415 V, 25 A","metaDescription":"Siemens 3VA1125-5EE42-0AA0-ZD00 IEC frame 160 MCCB, 55 kA breaking capacity @ 415 V, 4-pole, TM220 thermal-magnetic trip, Ir=18…25 A, Ii=12.8 x In. Current lifecycle. Quoted to ord","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/c884aa10a60cdb3f21300d32e49e4848.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1667672&mlfb=3VA1125-5EE42-0AA0-ZD00","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1125-5EE42-0AA0-ZD00/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of 3VA1125-5EE42-0AA0-ZD00?","answer":"Icu = 55 kA at 415 V AC, breaking capacity class M per IEC 60947-2. This means it can safely interrupt fault currents up to 55 kA without external fuses, suitable for high-fault industrial distribution."},{"question":"What does the TM220 trip unit setting mean?","answer":"TM220 is a thermal-magnetic trip. Overload (Ir) is adjustable from 18 A to 25 A via a dial on the front. Short-circuit instantaneous (Ii) is fixed at 12.8 times In — at the 25 A setting, that is 320 A. This is a line-protection curve, not motor-protection; it coordinates with downstream branch breakers."},{"question":"Where can I buy the 3VA1125-5EE42-0AA0-ZD00?","answer":"This part is sourced to order against an RFQ through independent industrial distribution. Submit a request for current pricing and lead time — availability is confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1125-5EE42-0AA0-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/3VA1125-5EE42-0AA0-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}}