{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1125-6EE42-0AA0-ZD00","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1125-6EE42-0AA0-ZD00","canonicalUrl":"https://aoctrl.com/siemens/3VA1125-6EE42-0AA0-ZD00","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1125-6EE42-0AA0-ZD00","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 3VA1 IEC frame 160 MCCB, breaking capacity class H, Icu=70kA @ 415V, 4-pole, line protection TM220, ATFM, In=25A, Ir=18A...25A, Ii=12.8 x In.","salesMarkdown":"The Siemens 3VA1125-6EE42-0AA0-ZD00 is a 4-pole IEC frame 160 molded case circuit breaker (MCCB) with a 25 A thermal-magnetic trip unit (TM220, ATFM). That rating is what determines whether this breaker holds its downstream coordination in a high-fault installation like a transformer secondary or a large motor control center. ## Overload and short-circuit settings Overload protection (Ir) is adjustable from 18 A to 25 A via the thermal dial, so you set it to the actual continuous load current, not the breaker's In. Short-circuit pickup (Ii) is fixed at 12.8 x In — that's 320 A at the 25 A setting. That's a magnetic-only instantaneous trip; it clears hard faults fast but won't nuisance-trip on motor inrush if the motor FLA is well below the pickup. The neutral conductor is unprotected on this variant (N conductor unprotected), so confirm your system grounding scheme before wiring.","metaTitle":"Siemens 3VA1125-6EE42-0AA0-ZD00 Circuit Breaker, 25A, 70kA @","metaDescription":"Siemens 3VA1125-6EE42-0AA0-ZD00 IEC frame 160 MCCB, 25A, 70kA breaking capacity @ 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/160e405f0d131f8088029b3dd4616154.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1667681&mlfb=3VA1125-6EE42-0AA0-ZD00","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1125-6EE42-0AA0-ZD00/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA1125-6EE42-0AA0-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 breaking capacity is 70 kA at 415 V (class H), which means it safely interrupts faults up to 70,000 A without cascading upstream."},{"question":"What does the TM220 trip unit mean?","answer":"TM220 is a thermal-magnetic trip with adjustable thermal overload (Ir) from 18 A to 25 A and fixed magnetic short-circuit pickup (Ii) at 12.8 x In."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1125-6EE42-0AA0-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/3VA1125-6EE42-0AA0-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}}