{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1332-4EE42-0AA0-ZD00","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1332-4EE42-0AA0-ZD00","canonicalUrl":"https://aoctrl.com/siemens/3VA1332-4EE42-0AA0-ZD00","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1332-4EE42-0AA0-ZD00","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 3VA1 IEC frame 400, breaking capacity class S, 4-pole, 320A, TM220, ATFM, Icu=36kA @ 415V.","salesMarkdown":"The Siemens 3VA1332-4EE42-0AA0-ZD00 is a 4-pole IEC frame 400 molded case circuit breaker rated 320 A continuous, with a breaking capacity of 36 kA at 415 V (class S). The thermal-magnetic TM220 trip unit gives adjustable overload protection (Ir = 224 A to 320 A) and a fixed short-circuit pickup at Ii = 10 × In (3200 A). The ATFM designation indicates it's line-protection oriented, not motor-protection. The N conductor is unprotected on this variant, which matters if you need full neutral protection in a 4-pole distribution board. Mounts in a standard IEC frame 400 footprint with nut keeper kit included for DC Power OEM assembly. The 4-pole form factor fits a 4-module wide panel cutout. Torque the line and load terminals to the Siemens-specified value for the frame 400 (typically 35–40 N·m on the main lugs, but confirm with the installation instructions for this exact variant). The unprotected neutral bus bar must be sized for full neutral current if the load has harmonics or unbalanced phases.","metaTitle":"Siemens 3VA1332-4EE42-0AA0-ZD00 IEC Breaker, 320A, 36kA @ 41","metaDescription":"Siemens 3VA1332-4EE42-0AA0-ZD00 IEC frame 400 breaker, 320A, 36kA IC at 415V, 4-pole, TM220. Current lifecycle stage. Quoted 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":"https://cdn.aoctrl.com/5a7190084b2963135363d6067688b3e2.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1667958&mlfb=3VA1332-4EE42-0AA0-ZD00","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1332-4EE42-0AA0-ZD00/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of this breaker?","answer":"Icu = 36 kA at 415 V AC, class S per IEC 60947-2. That's the ultimate short-circuit breaking capacity; the service breaking capacity (Ics) is typically 75–100% of Icu for this series, but verify the exact Ics value for the 320 A frame if you need it for selectivity coordination studies."},{"question":"Where can I buy 3VA1332-4EE42-0AA0-ZD00?","answer":"Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing confirmed at quote time — no stock position is published for this OEM-variant suffix."},{"question":"What does the TM220 trip unit mean?","answer":"TM220 is a thermal-magnetic trip with adjustable thermal overload (Ir from 224 A to 320 A) and a fixed magnetic short-circuit pickup at 10 × In (3200 A). It's line-protection, not motor-protection — no phase-loss or ground-fault sensing built in."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1332-4EE42-0AA0-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/3VA1332-4EE42-0AA0-ZD00 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-09-02T08:15:54.622Z","lastPublished":"2026-09-02T08:15:54.622Z","indexable":true}}