{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1120-5EE42-0AA0-ZD00","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1120-5EE42-0AA0-ZD00","canonicalUrl":"https://aoctrl.com/siemens/3VA1120-5EE42-0AA0-ZD00","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1120-5EE42-0AA0-ZD00","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 3VA1 IEC frame 160 MCCB, breaking capacity class M, Icu=55kA @ 415V, 4-pole, TM220 thermal-magnetic trip, In=20A, Ir=14A...20A, Ii=16 x In, N conductor unprotected, nut keeper kit, DC Power OEM variant.","salesMarkdown":"For a 4-pole MCCB on a 415 V three-phase system, that rating gives solid selectivity headroom downstream of a transformer or main switchboard. The class M designation places it in the middle of the 3VA1 breaking capacity range, above standard (S) but below the high-performance (H) class. The TM220 thermal-magnetic trip unit provides fixed thermal overload protection adjustable from 14 A to 20 A (Ir) and a fixed magnetic short-circuit pickup at 16 x In (320 A). That 16x multiplier is typical for motor-starting applications where inrush must ride through without nuisance tripping. The nut keeper kit and DC Power OEM designation in the order code suffix indicate this variant is configured for Chinese OEM panel builders supplying DC power systems. The nut keeper kit simplifies busbar or cable lug termination in high-vibration environments like rail or solar inverter cabinets. ## Panel Integration Mounts in a standard IEC frame 160 footprint with 4-pole spacing. The nut keeper kit is pre-installed on the line and load terminals — no loose hardware to drop into a live panel. Accepts Cu/Al busbars or ring-tongue lugs up to the frame's rated cross-section.","metaTitle":"Siemens 3VA1120-5EE42-0AA0-ZD00 Circuit Breaker, 55kA @ 415V","metaDescription":"Siemens 3VA1120-5EE42-0AA0-ZD00 IEC frame 160 MCCB, 55kA Icu @ 415V, 4-pole, TM220 thermal-magnetic trip, In=20A. 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/8f9635102cc186013bebe85c9f8f0ba8.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1667636&mlfb=3VA1120-5EE42-0AA0-ZD00","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1120-5EE42-0AA0-ZD00/alternatives.json"},"ai":{"faq":[{"question":"What is the short-circuit rating of this breaker?","answer":"The ultimate breaking capacity (Icu) is 55 kA at 415 V AC, which is the class M rating for the 3VA1 IEC frame 160 platform."},{"question":"What does the TM220 trip unit mean?","answer":"TM220 is a thermal-magnetic trip with fixed thermal overload adjustment from 14 A to 20 A (Ir) and a fixed magnetic short-circuit pickup at 16 times the rated current (Ii = 16 x In)."},{"question":"Where can I buy 3VA1120-5EE42-0AA0-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."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1120-5EE42-0AA0-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/3VA1120-5EE42-0AA0-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}}