{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"4EP3801-2US00","brand":"Siemens","brandSlug":"siemens","productSlug":"4EP3801-2US00","canonicalUrl":"https://aoctrl.com/siemens/4EP3801-2US00","factsUrl":"https://aoctrl.com/api/mcp/products/4EP3801-2US00","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 4EP3801-2US00 mains choke (Netzdrossel f. FU), 3-phase, 500V AC, 40.5A rated current, 0.4mH, 2% voltage drop, IP00, screw terminals, UL/CSA recognized.","salesMarkdown":"The Siemens 4EP3801-2US00 is a 3-phase mains choke (line reactor) sized for frequency converter input. It carries a rated current of 40.5 A (maximum 45 A) at 500 V AC, 50 Hz, with an inductance of 0.4 mH and a relative inductive voltage drop of 2% at rated conditions. That 2% drop is the standard impedance match for most VFD input circuits — keeps harmonic distortion in check without dropping too much voltage across the reactor. Mount this on the line side of a variable-frequency drive to smooth out current spikes and limit harmonics. The IP00 rating means it's an open-frame component — lives inside an electrical enclosure, not out in the washdown zone. Terminals are screw-type, so it wires up with standard ring or fork lugs. Total power loss runs 69 W (54 W in the coil plus 15 W in the iron core) at rated load and 40 °C ambient. Physical footprint: 0.178 m wide, 0.153 m tall, 0.12 m deep. That's about 7 by 6 by 4.7 inches — a compact block for a 40 A three-phase reactor. Thermal class B insulation (130 °C rise) per IEC 60085 means it handles sustained motor drive duty without cooking the windings.","metaTitle":"Siemens 4EP3801-2US00 Mains Choke, 3-Phase, 40.5A, 500V","metaDescription":"Siemens 4EP3801-2US00 mains choke for frequency converters. 3-phase, 40.5A rated, 500V, 0.4mH, IP00. UL/CSA recognized. Sourced to order against an 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":"45A","Rated Value":"40.5A","Phase number":"3","Type of voltage":"AC","lifecycle_stage":"mature","Product designation":"Netzdrossel f. FU","Protection class IP":"IP00","Inductivity rated value":"0.0004H","Power loss [W] of the coil":"54W","Operating voltage rated value":"500V","Ambient temperature rated value":"40°C","Operating frequency rated value":"50Hz","Power loss [W] of the iron core":"15W","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":"2%"}},"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=85058&mlfb=4EP3801-2US00","alternativesUrl":"https://aoctrl.com/api/mcp/products/4EP3801-2US00/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 4EP3801-2US00 and get a price?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."},{"question":"What are the key ratings for 4EP3801-2US00?","answer":"It's a 3-phase mains choke rated 40.5 A (max 45 A) at 500 V AC, 50 Hz, with 0.4 mH inductance and 2% voltage drop. Power loss is 69 W total at rated load. UL/CSA recognized."},{"question":"What compliance documentation does this part carry?","answer":"The part is UL and CSA recognized under EN 61558-2-20. Thermal class B per IEC 60085. IP00 protection class."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/4EP3801-2US00","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/4EP3801-2US00 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}}