{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"4EP3901-2DS00","brand":"Siemens","brandSlug":"siemens","productSlug":"4EP3901-2DS00","canonicalUrl":"https://aoctrl.com/siemens/4EP3901-2DS00","factsUrl":"https://aoctrl.com/api/mcp/products/4EP3901-2DS00","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 4EP3901-2DS00 commutating choke for converters, 3-phase, 400V AC, 50.4A rated current, 56A max, 0.5mH, IP00, flat-type terminals.","salesMarkdown":"The Siemens 4EP3901-2DS00 is a 3-phase commutating choke (line reactor) for converter drives, rated 50.4 A continuous with a 56 A maximum at 50 Hz and 400 V AC. It's an IP00 open-frame component meant for enclosure mounting — no splash protection, so it lives inside a cabinet, not on the washdown floor. The 0.5 mH inductance at 50.4 A gives a 4% relative inductive voltage drop at rated current and frequency. That 4% figure is the key sizing parameter — it tells you how much the choke will drop voltage under load, which affects DC bus ripple and motor torque at the drive output. For a standard 400 V drive, 4% drop is typical for smoothing commutation notches without excessive heating. Thermal class B (130 °C rise) and 67.3 W copper loss plus 21.6 W core loss at 40 °C ambient mean this choke sheds about 89 W total. That's heat that stays inside the enclosure — factor it into your cabinet cooling calc, especially if the drive and brake resistor are in the same panel. Flat-type terminals for the main circuit mean you're landing bus bars or crimp lugs, not wire ferrules. The 0.219 m width and 0.179 m height give you the footprint for panel layout — it's not a DIN-rail snap-on; it bolts to a backplate.","metaTitle":"Siemens 4EP3901-2DS00 Commutating Choke, 50.4A 3-Phase 400V","metaDescription":"Siemens 4EP3901-2DS00 commutating choke for converters. 3-phase, 400V AC, 50.4A rated, 56A max, 0.5mH. IP00. Lifecycle mature. Available to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Line/Load Reactors"],"specifications":{"Depth":"0.123m","Width":"0.219m","Height":"0.179m","Maximum":"56A","Rated Value":"50.4A","Phase number":"3","Type of voltage":"AC","lifecycle_stage":"mature","at DC rated value":"68.6A","Product designation":"Kommut.-Drossel f. Stromrichter","Protection class IP":"IP00","Inductivity rated value":"0.0005H","Power loss [W] of the coil":"67.3W","Operating voltage rated value":"400V","Ambient temperature rated value":"40°C","Operating frequency rated value":"50Hz","Power loss [W] of the iron core":"21.6W","Thermal class acc. to IEC 60085":"B","Type of electrical connection for main current circuit":"flat connector","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=3118&mlfb=4EP3901-2DS00","alternativesUrl":"https://aoctrl.com/api/mcp/products/4EP3901-2DS00/alternatives.json"},"ai":{"faq":[{"question":"What are the key dimensions of 4EP3901-2DS00?","answer":"Depth is 0.123 m, width 0.219 m, height 0.179 m. It's an open-frame (IP00) component that bolts to a backplate — not a DIN-rail mount."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/4EP3901-2DS00","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/4EP3901-2DS00 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}}