{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"4EP3800-2US00","brand":"Siemens","brandSlug":"siemens","productSlug":"4EP3800-2US00","canonicalUrl":"https://aoctrl.com/siemens/4EP3800-2US00","factsUrl":"https://aoctrl.com/api/mcp/products/4EP3800-2US00","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 4EP3800-2US00 mains choke for VFD, 3-phase, AC 480V, 50A max, 0.28 mH, 2% voltage drop, IP00, flat-type terminals.","salesMarkdown":"The Siemens 4EP3800-2US00 is a three-phase mains choke (line reactor) designed for variable-frequency drive input circuits. It handles 480 V AC at 50/60 Hz, rated for 45 A continuous with a 50 A maximum current. The 0.28 mH inductance and 2 % relative voltage drop smooth the drive's current draw and reduce harmonic distortion on the line side. This is an open-frame (IP00) component — no enclosure, so it mounts inside a panel with clearance for airflow. The flat-type terminals accept busbar or cable lugs; plan for a 0.178 m width and 0.153 m height footprint. Thermal class B (130 °C rise) and 40 °C ambient rating mean it derates in hotter cabinets — keep the ventilation path clear. ## Electrical and thermal losses Total power loss splits into 54 W in the coil and 19.2 W in the iron core at rated load.","metaTitle":"Siemens 4EP3800-2US00 Mains Choke, 3-Phase 480V 50A, IP00","metaDescription":"Siemens 4EP3800-2US00 mains choke for VFD. 3-phase, 480V AC, 50A max, 0.28 mH, 2% voltage drop. Active production. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Line/Load Reactors"],"specifications":{"Depth":"0.12m","Width":"0.178m","Height":"0.153m","Phase Number":"3","Type Of Voltage":"AC","lifecycle_stage":"mature","Product Designation":"Netzdrossel f. FU","protection class IP":"IP00","current at AC maximum":"50A","Inductivity Rated Value":"0.00028H","power loss [W] of the coil":"54W","Operating Voltage Rated Value":"400, 480V","Ambient Temperature Rated Value":"40°C","Operating Frequency Rated Value":"50 ... 60Hz","power loss [W] of the iron core":"19.2W","thermal class according to IEC 60085":"B","operational current at AC rated value":"45A","Type Of Electrical Connection For Main Current Circuit":"flat connector","Relative Inductive Drop In Voltage For Rated Value Of The Current, Voltage And Frequency":"2%"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/447e5b21e9baef33ec4f2fa260da6e5e.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=117981&mlfb=4EP3800-2US00","alternativesUrl":"https://aoctrl.com/api/mcp/products/4EP3800-2US00/alternatives.json"},"ai":{"faq":[{"question":"What are the key electrical ratings of the 4EP3800-2US00?","answer":"It is a 3-phase AC mains choke rated for 480 V, 50/60 Hz, with a maximum current of 50 A and a rated operational current of 45 A. Inductance is 0.28 mH and the voltage drop at rated conditions is 2%."},{"question":"Where can I buy the 4EP3800-2US00?","answer":"This part is sourced to order against an RFQ through independent distribution. Submit an RFQ for current pricing and availability."},{"question":"What compliance documentation does Siemens provide for the 4EP3800-2US00?","answer":"The part is UL/CSA recognized and designed per EN 61558-2-20. Thermal class B per IEC 60085. RoHS/REACH documentation is standard from Siemens."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/4EP3800-2US00","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/4EP3800-2US00 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}}