{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1050-3ED42-0AC0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1050-3ED42-0AC0","canonicalUrl":"https://aoctrl.com/siemens/3VA1050-3ED42-0AC0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1050-3ED42-0AC0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 3VA1 IEC frame 100 circuit breaker, 4-pole, breaking capacity class N Icu=25kA @ 415V, line protection TM210, In=50A fixed overload Ir=50A, fixed short-circuit protection Ii=10 x In, N conductor unprotected, nut keeper kit, 2 auxiliary switches HQ.","salesMarkdown":"The Siemens 3VA1050-3ED42-0AC0 is a 4-pole IEC molded-case circuit breaker from the 3VA1 frame family, sized for 50 A continuous load with a fixed thermal-magnetic trip unit (TM210). Overload protection is fixed at Ir = 50 A (the TM210 thermal element), and short-circuit pickup is fixed at Ii = 10 × In (500 A magnetic). No field-adjustable dials on this variant — the protection curve is set at the factory, which simplifies BOM traceability but means the breaker is sized to the load, not tuned after installation. The unprotected neutral conductor (no integral neutral protection) is standard for 4-pole breakers where the neutral is solidly grounded and not switched. The nut keeper kit and two factory-fitted auxiliary switches (HQ type) come included, so the breaker arrives ready for panel integration without sourcing separate accessory kits. The auxiliary switches signal breaker status (open/closed/tripped) back to a PLC or status lamp — useful for remote monitoring on a distribution board. The 4-pole footprint (three phases plus neutral) suits three-phase four-wire systems common in industrial and commercial power distribution — think sub-feed to a motor control center, lighting panel, or a machine disconnect. Coordination with upstream breakers or fuses should be checked per IEC 60947-2 selectivity rules, but the class N breaking capacity covers most standard industrial installations.","metaTitle":"Siemens 3VA1050-3ED42-0AC0 Circuit Breaker, 50A, 25kA @ 415V","metaDescription":"Siemens 3VA1050-3ED42-0AC0 IEC 4-pole circuit breaker, 50A fixed TM210 overload, 25kA breaking capacity at 415V. Current lifecycle stage. Available 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":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=421617&mlfb=3VA1050-3ED42-0AC0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1050-3ED42-0AC0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA1050-3ED42-0AC0 and get a price?","answer":"This breaker is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."},{"question":"What is the breaking capacity of this breaker?","answer":"The rated ultimate breaking capacity Icu is 25 kA at 415 V AC, which is class N for the 3VA1 frame."},{"question":"Is the overload protection adjustable on this variant?","answer":"No — the TM210 thermal-magnetic trip unit is fixed at Ir = 50 A overload and Ii = 10 × In short-circuit pickup. No field adjustment is available on this order code."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1050-3ED42-0AC0","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/3VA1050-3ED42-0AC0 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}}