{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1120-4EF36-0CC0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1120-4EF36-0CC0","canonicalUrl":"https://aoctrl.com/siemens/3VA1120-4EF36-0CC0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1120-4EF36-0CC0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 3VA1 IEC frame 160, breaking capacity class S, 36kA @ 415V AC, 3-pole, line protection TM240, In=20A, overload Ir=14-20A, short-circuit Ii=8-16xIn, clamp terminals, UVR 120-127V AC, 2 auxiliary switches HQ.","salesMarkdown":"## What this breaker is and what it carries The Siemens 3VA1120-4EF36-0CC0 is a 3VA1 IEC frame 160 molded-case circuit breaker with a 36 kA breaking capacity at 415 V AC — class S, meaning it sits in the middle of the 3VA1 breaking-capability tiers, suited for distribution panels where fault levels are moderate but not trivial. It is a 3-pole unit with a TM240 thermal-magnetic trip unit, rated In = 20 A, with overload protection adjustable from 14 A to 20 A and short-circuit protection set at 8 to 16 times In. The TM240 trip unit provides thermal (overload) and magnetic (short-circuit) protection: the thermal element tracks heating from sustained overcurrents, adjustable via the Ir dial between 14 A and 20 A, while the magnetic element reacts instantaneously to currents between 8× and 16× In (160 A to 320 A). ## Integration and deployment context The clamp terminals accept copper or aluminium conductors without lug crimping — speeds up panel wiring on distribution boards.","metaTitle":"Siemens 3VA1120-4EF36-0CC0 Circuit Breaker, 20A, 36kA @ 415V","metaDescription":"Siemens 3VA1120-4EF36-0CC0 IEC frame 160 circuit breaker, 20A, 36kA breaking capacity @ 415V AC. Current lifecycle. Sourced 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=29547&mlfb=3VA1120-4EF36-0CC0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1120-4EF36-0CC0/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of 3VA1120-4EF36-0CC0?","answer":"The ultimate short-circuit breaking capacity (Icu) is 36 kA at 415 V AC, class S on the IEC frame 160 platform."},{"question":"What trip unit and adjustments does this breaker have?","answer":"It uses a TM240 thermal-magnetic trip unit with overload protection adjustable from 14 A to 20 A (Ir) and short-circuit protection adjustable from 8 to 16 times In (Ii)."},{"question":"Where can I buy 3VA1120-4EF36-0CC0 and how is it quoted?","answer":"This 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/3VA1120-4EF36-0CC0","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/3VA1120-4EF36-0CC0 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}}