{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"4EP3801-2DS00","brand":"Siemens","brandSlug":"siemens","productSlug":"4EP3801-2DS00","canonicalUrl":"https://aoctrl.com/siemens/4EP3801-2DS00","factsUrl":"https://aoctrl.com/api/mcp/products/4EP3801-2DS00","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 4EP3801-2DS00 commutating choke for converter, 3-phase, 400V AC, 35.5A max, 31.95A rated, 0.79mH, IP00, screw terminals.","salesMarkdown":"The Siemens 4EP3801-2DS00 is a commutating choke (line reactor) for converter applications — three-phase, 400 V AC, 50 Hz. It limits current rise and harmonics on the input side of a variable-frequency drive or DC drive, protecting the rectifier and smoothing the DC bus. Rated 31.95 A continuous with a 35.5 A maximum, it's sized for a 30–40 A drive input on a 400 V three-phase supply. The choke is self-cooled (IP00, no enclosure), so it needs to be mounted inside a cabinet with adequate ventilation. The 35.5 A maximum (Ithmax) is the thermal continuous current the choke can carry without exceeding a 40 °C ambient. The 31.95 A rated current (ILN) is the nominal operating point for the 4% voltage drop — if your drive draws 32 A continuously, this choke matches. At DC, the rated value is 43.5 A, so it also works on the DC bus of a converter if needed. Power loss splits into 53 W in the coil and 18 W in the iron core at rated conditions — total 71 W. That's heat that stays in the cabinet; factor it into your enclosure cooling calculation. Thermal class B (130 °C) insulation gives a reasonable safety margin for continuous duty.","metaTitle":"Siemens 4EP3801-2DS00 Commutating Choke, 3-Phase 400V 35.5A","metaDescription":"Siemens 4EP3801-2DS00 commutating choke for converter. 3-phase, 400V AC, 35.5A max, 0.79mH, IP00, screw terminals. Mature lifecycle; sourced to order. Request RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Line/Load Reactors"],"specifications":{"Depth":"0.12m","Width":"0.178m","Height":"0.153m","Maximum":"35.5A","Rated Value":"31.95A","Phase number":"3","Type of voltage":"AC","lifecycle_stage":"mature","at DC rated value":"43.5A","Product designation":"Kommut.-Drossel f. Stromrichter","Protection class IP":"IP00","Inductivity rated value":"0.00079H","Power loss [W] of the coil":"53W","Operating voltage rated value":"400V","Ambient temperature rated value":"40°C","Operating frequency rated value":"50Hz","Power loss [W] of the iron core":"18W","Thermal class acc. to IEC 60085":"B","Type of electrical connection for main current circuit":"screw-type terminals","Relative inductive drop in voltage on the measurement level current, voltage and frequency":"4%"}},"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=118871&mlfb=4EP3801-2DS00","alternativesUrl":"https://aoctrl.com/api/mcp/products/4EP3801-2DS00/alternatives.json"},"ai":{"faq":[{"question":"How do I get current pricing and availability for 4EP3801-2DS00?","answer":"Submit an RFQ against this order code. We source the 4EP3801-2DS00 to order through independent distribution and confirm current pricing and availability at quote time."},{"question":"What are the key ratings of 4EP3801-2DS00?","answer":"Three-phase commutating choke, 400 V AC, 50 Hz, 35.5 A max / 31.95 A rated, 0.79 mH, 4% voltage drop, IP00, screw terminals, thermal class B."},{"question":"What compliance documentation does 4EP3801-2DS00 come with?","answer":"The choke is designed to EN 61558-2-20. Standard Siemens documentation includes a declaration of conformity; specific RoHS/REACH/UL status should be confirmed at RFQ time as it may vary by production batch."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/4EP3801-2DS00","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/4EP3801-2DS00 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}}