{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VM1120-4EE46-0AA2","brand":"Siemens","brandSlug":"siemens","productSlug":"3VM1120-4EE46-0AA2","canonicalUrl":"https://aoctrl.com/siemens/3VM1120-4EE46-0AA2","factsUrl":"https://aoctrl.com/api/mcp/products/3VM1120-4EE46-0AA2","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 3VM1 IEC frame 160 circuit breaker, breaking capacity class S, Icu=36kA @ 415V, 4-pole, line protection TM220, ATFM, In=20A, overload Ir=14A...20A, short-circuit Ii=16 x In.","salesMarkdown":"## Breaking capacity and selectivity in the panel The 3VM1120-4EE46-0AA2 is a 4-pole IEC frame 160 circuit breaker with a 36 kA breaking capacity at 415 V (class S). That rating means it can safely interrupt a fault current up to 36 kA without welding contacts or cascading failure upstream — a critical figure for panel builders coordinating with a main breaker or transformer secondary. The 20 A thermal-magnetic release (TM220) with adjustable overload protection (Ir = 14 A to 20 A) and fixed short-circuit pickup (Ii = 16 × In, so 320 A) gives you a standard line-protection curve for cable and distribution circuits. The neutral conductor is unprotected on this variant (terminal connection only), so the breaker interrupts the three phases and switches the neutral without overcurrent protection — typical for TN or TT systems where the neutral is bonded at the source and fault current returns via the phase path. Verify your system earthing arrangement before specifying.","metaTitle":"Siemens 3VM1120-4EE46-0AA2 Circuit Breaker, 36kA @ 415V, 20A","metaDescription":"Siemens 3VM1120-4EE46-0AA2 IEC frame 160 circuit breaker, 36kA breaking capacity at 415V, 4-pole, 20A. Active lifecycle. 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":"https://cdn.aoctrl.com/890a9c4e8f724baae13c5de28442f149.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=682796&mlfb=3VM1120-4EE46-0AA2","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VM1120-4EE46-0AA2/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VM1120-4EE46-0AA2 and get a price?","answer":"This part is sourced through independent distribution and quoted to order against an RFQ. Submit a request for current pricing and availability."},{"question":"What is the breaking capacity of this breaker?","answer":"The 3VM1120-4EE46-0AA2 has an Icu of 36 kA at 415 V (breaking capacity class S), which is the maximum fault current it can safely interrupt."},{"question":"What does the adjustable overload protection range cover?","answer":"The thermal overload Ir is adjustable from 14 A to 20 A, matching the In = 20 A rating. The short-circuit pickup Ii is fixed at 16 × In (320 A)."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VM1120-4EE46-0AA2","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/3VM1120-4EE46-0AA2 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}}