{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"4EP4001-2US00","brand":"Siemens","brandSlug":"siemens","productSlug":"4EP4001-2US00","canonicalUrl":"https://aoctrl.com/siemens/4EP4001-2US00","factsUrl":"https://aoctrl.com/api/mcp/products/4EP4001-2US00","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 4EP4001-2US00 mains choke (Netzdrossel f. FU), 3-phase, 500V AC, 41A rated current (45A max), 0.81mH, IP00, screw terminals.","salesMarkdown":"FU). It smooths current harmonics, limits inrush current, and protects the drive rectifier from line transients. Rated for 500 V AC at 50 Hz with a rated current of 41 A (maximum 45 A) and an inductance of 0.81 mH, it produces a 4% relative inductive voltage drop at rated conditions — a typical value for drive input chokes that balances harmonic mitigation against voltage sag. The 41 A rated current (45 A maximum) sets the continuous load capacity. For a 3-phase drive, this choke is typically sized for a drive with a rated input current at or below 41 A — check the drive's nameplate input amps, not the motor full-load amps. The 0.81 mH inductance and 4% voltage drop are a matched pair: higher inductance gives more harmonic attenuation but steals more voltage from the drive's DC bus. At 4%, this choke is in the standard range for general-purpose drive protection. The 77.4 W copper loss plus 25 W iron-core loss (total ~102 W at rated load) means it sheds heat; mount it with clearance for airflow — IP00 means no enclosure, so it goes inside a panel or cabinet, not in a washdown zone. ## Physical integration Dimensions are 0.219 m wide by 0.179 m tall by 0.143 m deep. The IP00 rating means it's open-frame — no drip shield, no finger-safe enclosure. Mount it inside a cabinet with at least 50 mm clearance on all sides for convection cooling. The thermal class B insulation (130 °C rise) per IEC 60085 gives headroom for the 40 °C ambient rating.","metaTitle":"Siemens 4EP4001-2US00 Mains Choke, 41A, 0.81mH, IP00","metaDescription":"Siemens 4EP4001-2US00 mains choke for variable-frequency drives. 3-phase, 500V AC, 41A rated current, 0.81mH inductance, 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":"0.143m","Width":"0.219m","Height":"0.179m","Maximum":"45A","Rated Value":"41A","Phase number":"3","Type of voltage":"AC","lifecycle_stage":"mature","Product designation":"Netzdrossel f. FU","Protection class IP":"IP00","Inductivity rated value":"0.00081H","Power loss [W] of the coil":"77.4W","Operating voltage rated value":"500V","Ambient temperature rated value":"40°C","Operating frequency rated value":"50Hz","Power loss [W] of the iron core":"25W","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=256913&mlfb=4EP4001-2US00","alternativesUrl":"https://aoctrl.com/api/mcp/products/4EP4001-2US00/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy the 4EP4001-2US00?","answer":"This mains choke is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm commitment."},{"question":"What are the key electrical ratings of the 4EP4001-2US00?","answer":"It is a 3-phase choke rated for 500 V AC at 50 Hz, with a rated current of 41 A (45 A maximum), 0.81 mH inductance, and a 4% relative inductive voltage drop at rated conditions."},{"question":"What compliance documentation does this choke carry?","answer":"The 4EP4001-2US00 is UL/CSA recognized under EN 61558-2-20. It carries thermal class B (130 °C) per IEC 60085 and is rated IP00 with screw-type terminals."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/4EP4001-2US00","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/4EP4001-2US00 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}}