{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1150-5EF32-0CA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1150-5EF32-0CA0","canonicalUrl":"https://aoctrl.com/siemens/3VA1150-5EF32-0CA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1150-5EF32-0CA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 3VA1 IEC frame 160, breaking capacity class M, Icu=55kA @ 415V, 3-pole, line protection TM240, ATAM, In=50A, overload Ir=35A...50A, short-circuit Ii=5...10 x In, nut keeper kit, undervoltage release 120-127V AC 50/60Hz.","salesMarkdown":"The Siemens 3VA1150-5EF32-0CA0 is a 3VA1 IEC frame 160 molded case circuit breaker with a 55 kA interrupting capacity at 415 V (breaking capacity class M). The thermal overload is adjustable from 35 A to 50 A (In=50 A), and the magnetic short-circuit pickup is set at 5 to 10 times In — so 250 A to 500 A instantaneous. That's a standard motor-circuit range; the lower end protects branch feeders, the upper end rides through motor inrush. The UVR drops the breaker open when control voltage falls below its dropout threshold — typical for emergency-stop chains or undervoltage protection on machine feeds. The 55 kA Icu at 415 V puts this in breaking capacity class M — the middle tier in Siemens' 3VA1 lineup. It coordinates downstream with standard panelboard breakers and upstream with a transformer secondary rated for similar fault current. The TM240 trip unit is thermal-magnetic, not electronic. That means no external power needed for the trip function, but also no adjustable time-delay curves or ground-fault protection. For simple motor or feeder protection where selectivity is managed by current magnitude rather than time bands, this is a clean fit. The UVR coil draws from a 120-127 V AC control circuit. Verify your control transformer taps — a 120 V nominal supply is fine, but if your panel runs 110 V or 130 V, check the dropout and pickup thresholds in the Siemens application manual. The nut keeper kit is a small thing but saves time on the panel build: it prevents the terminal nuts from backing off under vibration.","metaTitle":"Siemens 3VA1150-5EF32-0CA0 Circuit Breaker, 55kA @ 415V, 50A","metaDescription":"Siemens 3VA1150-5EF32-0CA0 IEC frame 160 circuit breaker, breaking capacity class M, Icu=55kA @ 415V, 3-pole, 50A TM240 trip, undervoltage release 120-127V AC. Current lifecycle st","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=41378&mlfb=3VA1150-5EF32-0CA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1150-5EF32-0CA0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy the 3VA1150-5EF32-0CA0 and get a price?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Submit an RFQ for current availability and pricing — confirmed at quote time."},{"question":"What is the interrupting rating of this breaker?","answer":"The 3VA1150-5EF32-0CA0 has an Icu of 55 kA at 415 V AC, which is breaking capacity class M on the Siemens 3VA1 frame 160 platform."},{"question":"What trip unit and adjustments does this breaker have?","answer":"It uses a TM240 thermal-magnetic trip unit. Overload protection (Ir) is adjustable from 35 A to 50 A, and short-circuit protection (Ii) is adjustable from 5 to 10 times In (250 A to 500 A)."},{"question":"Does this breaker include an undervoltage release?","answer":"Yes, it ships with an undervoltage release (UVR) rated 120-127 V AC, 50/60 Hz, plus a nut keeper kit for the terminals."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1150-5EF32-0CA0","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/3VA1150-5EF32-0CA0 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}}