{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1125-4EF32-0JA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1125-4EF32-0JA0","canonicalUrl":"https://aoctrl.com/siemens/3VA1125-4EF32-0JA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1125-4EF32-0JA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 3VA1 series, IEC frame 160, breaking capacity class S, 3-pole MCCB, In=25A, Icu=36kA @ 415V, TM240 thermal-magnetic overload protection Ir=18A...25A, short-circuit protection Ii=6.4...12.8 x In, with shunt trip (STL) 110-127V DC/AC 50/60Hz.","salesMarkdown":"The thermal-magnetic trip unit (TM240) provides overload protection adjustable from 18A to 25A (Ir) and short-circuit protection adjustable from 6.4x to 12.8x In, so you set the actual pickup to match your downstream cable and load, not just the breaker's nominal rating. The shunt trip (STL) operates on 110-127V DC or AC 50/60Hz — a remote trip signal from an emergency-stop circuit or a safety PLC can drop the breaker without an operator at the panel. The nut keeper kit holds the terminal hardware in place during installation, a small detail that saves time on a crowded DIN-rail or panel-mount layout. The 3-pole configuration with shunt trip occupies roughly the same width as a standard 3-pole MCCB in this frame class — plan for the shunt trip wiring (110-127V) to run back to the control transformer or safety relay, not through the breaker's load-side conductors. The nut keeper kit is already included, so no separate hardware order for the terminal connections.","metaTitle":"Siemens 3VA1125-4EF32-0JA0 Circuit Breaker, 25A, 36kA @ 415V","metaDescription":"Siemens 3VA1125-4EF32-0JA0 IEC frame 160 MCCB, 25A, 36kA breaking capacity @ 415V, TM240 thermal-magnetic trip, shunt trip 110-127V. Lifecycle: current. Available to order, quoted","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":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=339672&mlfb=3VA1125-4EF32-0JA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1125-4EF32-0JA0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA1125-4EF32-0JA0 and how do I get a price?","answer":"This part is sourced and quoted to order through independent distribution. Submit an RFQ for current availability and pricing — confirmed at quote time."},{"question":"What is the breaking capacity of this MCCB?","answer":"The Siemens 3VA1125-4EF32-0JA0 has an Icu of 36kA at 415V AC, which is the Class S breaking capacity for the IEC frame 160. That rating governs its ability to clear a bolted fault without damage."},{"question":"What does the TM240 trip unit adjustment range cover?","answer":"The TM240 thermal-magnetic trip allows overload protection (Ir) adjustable from 18A to 25A and short-circuit protection (Ii) adjustable from 6.4x to 12.8x In. You set Ir to match the continuous load current and Ii to coordinate with downstream devices."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1125-4EF32-0JA0","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/3VA1125-4EF32-0JA0 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}}