{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1220-4GF42-0BC0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1220-4GF42-0BC0","canonicalUrl":"https://aoctrl.com/siemens/3VA1220-4GF42-0BC0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1220-4GF42-0BC0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 3VA1 IEC frame 250 circuit breaker, breaking capacity class S, Icu=36kA @ 415V, 4-pole, line protection TM240, ATAM, In=200A, overload protection Ir=140A...200A, short-circuit protection Ii=5...10 x In, N conductor protection 100%, nut keeper kit, undervoltage release (UVR) 24V DC.","salesMarkdown":"The Siemens 3VA1220-4GF42-0BC0 is a 4-pole IEC frame 250 molded-case circuit breaker from the 3VA1 series, rated for line protection with a TM240 thermal-magnetic trip unit. The In=200 A continuous rating, with adjustable overload protection Ir=140 A…200 A and short-circuit pickup Ii=5…10 x In, lets the panel builder dial in the trip curve to match the downstream cable and load without swapping the breaker body. The built-in undervoltage release (UVR) operates on 24 V DC, so the breaker trips when control voltage drops — common in safety circuits or emergency-stop chains where loss of the holding coil must open the main contacts. The N-conductor protection is set at 100% of the phase rating, meaning the neutral pole is fully rated and protected, not just switched. A nut keeper kit is included for secure terminal fastening in high-vibration panels. The 4-pole footprint occupies four module widths; plan gland-plate space for the incoming cable lugs and the UVR wiring (24 V DC, polarity-sensitive). The TM240 thermal-magnetic unit is non-interchangeable in the field — the Ir and Ii adjustments are the only on-site tuning available.","metaTitle":"Siemens 3VA1220-4GF42-0BC0 Circuit Breaker, 36kA @ 415V, 200","metaDescription":"Siemens 3VA1220-4GF42-0BC0 IEC frame 250 circuit breaker, breaking capacity class S Icu=36kA @ 415V, 4-pole, TM240, In=200A, UVR 24V DC. Active production, available to order.","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=568433&mlfb=3VA1220-4GF42-0BC0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1220-4GF42-0BC0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA1220-4GF42-0BC0?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution; availability and current pricing are confirmed at quote time."},{"question":"What are the key ratings of 3VA1220-4GF42-0BC0?","answer":"It is an IEC frame 250 breaker, breaking capacity class S with Icu=36kA @ 415V, 4-pole, TM240 trip unit, In=200A, overload protection Ir=140A...200A, short-circuit protection Ii=5...10 x In, N conductor protection 100%, and an undervoltage release (UVR) 24V DC."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1220-4GF42-0BC0","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/3VA1220-4GF42-0BC0 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}}