{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1120-4EF36-0AH0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1120-4EF36-0AH0","canonicalUrl":"https://aoctrl.com/siemens/3VA1120-4EF36-0AH0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1120-4EF36-0AH0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 3VA1 IEC frame 160, breaking capacity class S, Icu=36kA @ 415V, 3-pole, line protection TM240, ATAM, In=20A, overload Ir=14A...20A, short-circuit Ii=8...16 x In, clamp connection, 2 auxiliary switches HQ, 1 trip alarm switch HQ.","salesMarkdown":"Siemens 3VA1120-4EF36-0AH0 is a 3-pole IEC frame 160 molded-case circuit breaker with a 36 kA interrupting capacity at 415 V AC — class S breaking capacity, meaning it handles high fault currents typical of industrial distribution panels without cascading upstream. The TM240 thermal-magnetic trip unit gives you adjustable overload protection from 14 A to 20 A (Ir) and short-circuit pickup from 8 to 16 times In (Ii). That adjustability lets you fine-tune coordination with downstream feeders without swapping the breaker. ## Accessories Included The aux switches signal breaker position (open/closed) to a PLC or status lamp; the trip alarm differentiates a fault trip from a manual open — useful for remote alarm panels or motor control center (MCC) monitoring.","metaTitle":"Siemens 3VA1120-4EF36-0AH0 Circuit Breaker, 36kA @ 415V, 20A","metaDescription":"Siemens 3VA1120-4EF36-0AH0 IEC frame 160 circuit breaker, 36kA breaking capacity at 415V, 3-pole, TM240 thermal-magnetic trip, 20A adjustable overload. Current lifecycle. Available","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=157355&mlfb=3VA1120-4EF36-0AH0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1120-4EF36-0AH0/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of 3VA1120-4EF36-0AH0?","answer":"Icu = 36 kA at 415 V AC, class S breaking capacity per IEC 60947-2."},{"question":"What overload range does the TM240 trip unit cover?","answer":"Adjustable overload protection Ir from 14 A to 20 A, with short-circuit pickup Ii from 8 to 16 times In (160–320 A for a 20 A breaker)."},{"question":"Where can I buy 3VA1120-4EF36-0AH0?","answer":"Sourced to order against an RFQ through independent distribution. Availability and current pricing confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1120-4EF36-0AH0","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/3VA1120-4EF36-0AH0 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}}