{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1225-5GF42-0JA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1225-5GF42-0JA0","canonicalUrl":"https://aoctrl.com/siemens/3VA1225-5GF42-0JA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1225-5GF42-0JA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 3VA1 IEC frame 250, breaking capacity class M, Icu=55kA @ 415V, 4-pole, line protection TM240, ATAM, In=250A, overload protection Ir=175A...250A, shunt trip (STL) 110-127V DC, AC 50/60Hz.","salesMarkdown":"The Siemens 3VA1225-5GF42-0JA0 is a 4-pole IEC frame 250 molded case circuit breaker with a 55 kA interrupting capacity at 415 V (breaking capacity class M). It's built for line protection with a TM240 thermal-magnetic trip unit — the thermal element adjustable from 175 A to 250 A, the magnetic pickup set at 5 to 10 times In. That means you can dial in the overload protection to match your cable or busbar rating, while the short-circuit trip stays fast enough to clear a bolted fault without letting the arc sustain. This unit also includes a shunt trip (STL) rated for 110–127 V DC or AC, 50/60 Hz. That's the remote-trip coil — tie it to an E-stop button, a fire alarm relay, or a PLC digital output, and you can drop the breaker from a distance without walking to the panel. The 100% neutral conductor protection means the neutral pole is fully rated, not just a switched neutral. Lifecycle stage is current — this is an active-production part from Siemens. No phase-out notice, no last-time-buy window to watch. For a BOM freeze, this breaker is a stable line item; you're not chasing a sunset date. ## Panel fit & integration Mounts in a standard switchboard or enclosure on a mounting plate — no DIN rail for this frame size. The 4-pole footprint needs roughly 280 mm of panel width; leave clearance above for the arc-chute exhaust and below for the shunt-trip wiring. Spring-cage terminals on the load side accept 50–185 mm² cable; torque per the nameplate values.","metaTitle":"Siemens 3VA1225-5GF42-0JA0 Circuit Breaker, 250A, 55kA @ 415","metaDescription":"Siemens 3VA1225-5GF42-0JA0 IEC frame 250 circuit breaker, breaking capacity class M, Icu=55kA @ 415V, 4-pole, In=250A, with shunt trip STL 110-127V DC/AC. Active production, availa","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=568798&mlfb=3VA1225-5GF42-0JA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1225-5GF42-0JA0/alternatives.json"},"ai":{"faq":[{"question":"What does the shunt trip (STL) on this breaker do?","answer":"The shunt trip (STL) is a remote-trip coil rated for 110–127 V DC or AC, 50/60 Hz. Applying voltage to it mechanically trips the breaker, allowing remote or automatic disconnection from an E-stop, fire alarm, or PLC output."},{"question":"What is the interrupting rating of 3VA1225-5GF42-0JA0?","answer":"The breaking capacity class M gives an Icu of 55 kA at 415 V AC. That's the maximum fault current the breaker can safely interrupt under standard test conditions."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1225-5GF42-0JA0","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/3VA1225-5GF42-0JA0 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}}