{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1120-4EF36-0BA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1120-4EF36-0BA0","canonicalUrl":"https://aoctrl.com/siemens/3VA1120-4EF36-0BA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1120-4EF36-0BA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 3VA1 IEC frame 160, breaking capacity class S, 36kA @ 415V, 3-pole, line protection TM240, In=20A, overload Ir=14…20A, short-circuit Ii=8…16 x In, clamp connection, undervoltage release (UVR) 24V DC.","salesMarkdown":"## What this 3VA1 breaker carries The Siemens 3VA1120-4EF36-0BA0 is a 3-pole IEC frame 160 circuit breaker in the 3VA1 series, rated for 20 A with a TM240 thermal-magnetic trip unit. Overload protection is adjustable from 14 A to 20 A; short-circuit pickup is set at 8 to 16 times In. Breaking capacity lands at 36 kA at 415 V — class S on the 3VA1 scale, sized for distribution panels where fault current runs high but the main bus stays below 160 A frame. ## Undervoltage release and wiring The UVR coil holds at nominal 24 V DC; below roughly 18 V the breaker opens, which is the intended behavior for emergency-stop or power-loss sequences that need a positive open on control-power failure. Terminals are clamp-type — strip length around 8 mm, accepts 0.2–2.5 mm² solid or ferruled stranded.","metaTitle":"Siemens 3VA1120-4EF36-0BA0 Circuit Breaker, 36kA @ 415V, 20A","metaDescription":"Siemens 3VA1120-4EF36-0BA0 IEC frame 160 circuit breaker, 36kA breaking capacity @ 415V, 20A TM240, UVR 24V DC. Current lifecycle stage. 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=336173&mlfb=3VA1120-4EF36-0BA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1120-4EF36-0BA0/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of this breaker?","answer":"Breaking capacity is 36 kA at 415 V, which is the class S rating on the 3VA1 IEC frame 160 platform."},{"question":"What does the undervoltage release (UVR) do on this breaker?","answer":"The UVR trips the breaker when the control voltage falls below 24 V DC — typically used in emergency-stop circuits or power-loss protection schemes that require a positive open on control-power failure."},{"question":"How do I get current pricing and availability for 3VA1120-4EF36-0BA0?","answer":"The part is sourced and quoted to order against an RFQ through independent distribution; availability and current pricing are confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1120-4EF36-0BA0","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/3VA1120-4EF36-0BA0 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}}