{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1220-4GF42-0AA0-ZD00","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1220-4GF42-0AA0-ZD00","canonicalUrl":"https://aoctrl.com/siemens/3VA1220-4GF42-0AA0-ZD00","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1220-4GF42-0AA0-ZD00","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 3VA1 IEC frame 250, breaking capacity class S, 36kA @ 415V, 4-pole, line protection TM240 ATAM, In=200A, overload Ir=140-200A, short-circuit Ii=5-10xIn, N-conductor protection 100%, nut keeper kit for DC Power OEM in China.","salesMarkdown":"The Siemens 3VA1220-4GF42-0AA0-ZD00 is a 4-pole IEC molded case circuit breaker from the 3VA1 frame-250 series, rated for line protection with a TM240 ATAM thermal-magnetic trip unit. Its interrupting capacity hits 36 kA at 415 V (breaking capacity class S), sized for industrial distribution panels where fault current levels demand a high-break device rather than a standard 25 kA class. ## Trip settings and coordination Overload protection (Ir) adjusts from 140 A to 200 A via the TM240 thermal element, matching a 200 A frame (In). Short-circuit magnetic pickup (Ii) is fixed at 5 to 10 times In, so on a 200 A setting the instantaneous trip fires between 1000 A and 2000 A. That range gives selectivity headroom downstream — a 200 A feeder can coordinate with 100 A branch breakers without nuisance tripping on motor inrush. The N-conductor protection is set to 100%, meaning the neutral pole is fully rated and protected at the same level as the phase poles — important for 4-wire systems with harmonic currents or non-linear loads where neutral current can approach phase current.","metaTitle":"Siemens 3VA1220-4GF42-0AA0-ZD00 Circuit Breaker, 36kA @ 415V","metaDescription":"Siemens 3VA1220-4GF42-0AA0-ZD00 IEC frame 250 circuit breaker, 36kA breaking capacity S class, 4-pole, TM240 ATAM, In=200A, Ir=140-200A, Ii=5-10xIn. Current lifecycle stage. Source","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Molded Case Circuit Breakers (MCCB)"],"specifications":{"title":"3VA1220-4GF42-0AA0-ZD00","description":"circuit breaker 3VA1 IEC frame 250 breaking capacity class S Icu=36kA @ 415V 4-pole, line protection TM240, ATAM, In=200A overload protection Ir=140A...200A short-circuit protection Ii=5...10 x In N conductor protection 100% nut keeper kit for DC Power OEM in China","lifecycle_stage":"current"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/35a0758b810aba1969851ed0b580589c.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1667926&mlfb=3VA1220-4GF42-0AA0-ZD00"},"ai":{"faq":[{"question":"What is the breaking capacity of this breaker?","answer":"Icu = 36 kA at 415 V AC, which is the S (standard) breaking capacity class for the 3VA1 frame-250 platform."},{"question":"Where can I buy 3VA1220-4GF42-0AA0-ZD00?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."},{"question":"What does the TM240 ATAM trip unit mean?","answer":"TM240 is a thermal-magnetic trip with a 200 A fixed rating (In). ATAM indicates adjustable thermal (Ir = 140-200 A) and fixed magnetic (Ii = 5-10x In) settings, plus 100% N-conductor protection."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1220-4GF42-0AA0-ZD00","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/3VA1220-4GF42-0AA0-ZD00 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}