{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1120-3EF32-0KA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1120-3EF32-0KA0","canonicalUrl":"https://aoctrl.com/siemens/3VA1120-3EF32-0KA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1120-3EF32-0KA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 3VA1 IEC frame 160, 3-pole circuit breaker, breaking capacity class N, Icu=25kA @ 415V, line protection TM240, ATAM, In=20A, overload Ir=14A...20A, short-circuit Ii=8...16 x In, shunt trip (STL) 220-250V DC, 208-277V AC, nut keeper kit.","salesMarkdown":"The 3VA1120-3EF32-0KA0 is a Siemens 3VA1 IEC frame 160 molded-case circuit breaker, 3-pole, with a breaking capacity class N rating of Icu=25kA at 415 V AC. The thermal-magnetic trip unit is a TM240, meaning the fixed thermal element is sized for a 20 A continuous current (In), with an adjustable overload protection range (Ir) from 14 A to 20 A, and a short-circuit magnetic pickup (Ii) adjustable from 8 to 16 times In — so from 160 A to 320 A. This lets you tune the overload band to the actual load current without swapping the breaker body. ## Deployment context The integrated shunt trip (STL) operates on 220–250 V DC or 208–277 V AC, allowing remote tripping from an emergency-stop circuit or a PLC digital output. The nut keeper kit secures the line/load lug connections — a detail that matters during panel wiring when you're torquing multiple breakers on the same bus.","metaTitle":"Siemens 3VA1120-3EF32-0KA0 Circuit Breaker, 20A, 25kA @ 415V","metaDescription":"Siemens 3VA1120-3EF32-0KA0 IEC frame 160, 3-pole, breaking capacity class N, Icu=25kA @ 415V. TM240 thermal-magnetic trip, In=20A, Ir=14-20A, Ii=8-16xIn. Shunt trip STL 220-250VDC/","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=517802&mlfb=3VA1120-3EF32-0KA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1120-3EF32-0KA0/alternatives.json"},"ai":{"faq":[{"question":"How do I get current pricing and availability for 3VA1120-3EF32-0KA0?","answer":"Pricing and availability are confirmed at quote time against an RFQ through independent distribution. Submit an RFQ for a current quote and lead-time estimate."},{"question":"What is the breaking capacity and protection range of this breaker?","answer":"The 3VA1120-3EF32-0KA0 has a breaking capacity Icu=25kA at 415 V AC, an adjustable overload protection Ir from 14 A to 20 A, and a short-circuit magnetic pickup Ii adjustable from 8 to 16 times In (160 A to 320 A)."},{"question":"What voltage does the shunt trip operate on?","answer":"The integrated shunt trip (STL) operates on 220–250 V DC or 208–277 V AC."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1120-3EF32-0KA0","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/3VA1120-3EF32-0KA0 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}}