{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"4EP3900-0DS00","brand":"Siemens","brandSlug":"siemens","productSlug":"4EP3900-0DS00","canonicalUrl":"https://aoctrl.com/siemens/4EP3900-0DS00","factsUrl":"https://aoctrl.com/api/mcp/products/4EP3900-0DS00","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 4EP3900-0DS00 commutating choke for converter, 3-phase, 400V AC, 45A rated current, 50 Hz, 0.56 mH, IP00, screw terminals.","salesMarkdown":"The Siemens 4EP3900-0DS00 is a commutating choke (line reactor) designed for converter input circuits. Its job is to limit current rise, reduce harmonics, and protect the DC link from line-side transients — essential for keeping variable-frequency drives and DC drives running reliably in a high-bay AS/RS or any automated line. Rated 45 A continuous (50 A maximum) on a 3-phase, 400 V AC, 50 Hz system, with an inductance of 0.56 mH and a relative inductive voltage drop of 4% at rated conditions. That 4% drop is the design target for most standard drive applications — it smooths the current waveform without pulling down the bus voltage enough to trip undervoltage on the drive. The DC-rated current is 61.2 A, which covers the higher RMS current typical in DC-link applications. Thermal class B (130 °C rise) per IEC 60085, with a total power loss of 65 W in the coil plus 21 W in the iron core at rated load — that heat must be considered in enclosure sizing, especially given the IP00 open-frame construction. The 0.123 m depth, 0.219 m width, and 0.179 m height occupy a moderate footprint. The choke is UL/CSA recognized per EN 61558-2-20, which covers the safety isolation and thermal performance for North American installations.","metaTitle":"Siemens 4EP3900-0DS00 Commutating Choke, 3-Phase 400V 45A","metaDescription":"Siemens 4EP3900-0DS00 commutating choke for converter, 3-phase, 400V AC, 45A rated, 50Hz. IP00, screw terminals, UL/CSA recognized. Sourced to order.","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":"50A","Rated Value":"45A","Phase number":"3","Type of voltage":"AC","lifecycle_stage":"mature","at DC rated value":"61.2A","Product designation":"Kommut.-Drossel f. Stromrichter","Protection class IP":"IP00","Inductivity rated value":"0.00056H","Power loss [W] of the coil":"65W","Operating voltage rated value":"400V","Ambient temperature rated value":"40°C","Operating frequency rated value":"50Hz","Power loss [W] of the iron core":"21W","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=297067&mlfb=4EP3900-0DS00","alternativesUrl":"https://aoctrl.com/api/mcp/products/4EP3900-0DS00/alternatives.json"},"ai":{"faq":[{"question":"What is the 4EP3900-0DS00 used for?","answer":"It is a commutating choke (line reactor) for 3-phase converter input circuits, rated 45 A at 400 V AC, 50 Hz. It limits current rise, reduces harmonic distortion, and protects the DC link from line-side transients in variable-frequency drives and DC drive systems."},{"question":"What are the mounting dimensions of the 4EP3900-0DS00?","answer":"The choke measures 0.123 m deep, 0.219 m wide, and 0.179 m high. It is an open-frame IP00 component intended for panel or cabinet mounting with adequate clearance for airflow and screw-terminal access."},{"question":"Does the 4EP3900-0DS00 have UL or CSA approval?","answer":"Yes, it is UL/CSA recognized under EN 61558-2-20, covering safety isolation and thermal performance for North American installations."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/4EP3900-0DS00","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/4EP3900-0DS00 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}}