{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"4EP3801-1GK00","brand":"Siemens","brandSlug":"siemens","productSlug":"4EP3801-1GK00","canonicalUrl":"https://aoctrl.com/siemens/4EP3801-1GK00","factsUrl":"https://aoctrl.com/api/mcp/products/4EP3801-1GK00","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 4EP3 series mains choke (Netzdrossel f. FU), 3-phase, 400/480V AC, 41.2A rated / 45.8A max, 0.32mH, 2% voltage drop, IP00, screw terminals.","salesMarkdown":"The Siemens 4EP3801-1GK00 is a 3-phase mains choke (Netzdrossel f. FU) designed for variable-frequency drive input lines. It carries a rated current of 41.2 A with a maximum of 45.8 A at 60 Hz, operating at 400/480 V AC, 50/60 Hz. The 0.32 mH inductance and 2% relative inductive voltage drop are sized to smooth line-side harmonics and limit inrush current peaks on the drive's DC bus — the 2% drop is the standard impedance for a line reactor in this class, meaning it provides enough reactance to reduce harmonic distortion without dropping excessive voltage under load. ## Sizing and thermal considerations Rated for a 50 °C ambient with thermal class B insulation (130 °C hot-spot) per IEC 60085. Total power loss splits between the coil (41 W) and the iron core (26 W) — 67 W dissipated into the enclosure. ## Physical fit and connections Dimensions are 0.178 m wide × 0.153 m high × 0.12 m deep. The IP00 form factor means it is an open-style component; plan for a minimum clearance around the choke for airflow and to meet the creepage distances for 480 V line voltage.","metaTitle":"Siemens 4EP3801-1GK00 Mains Choke for VFD, 41.2A, 0.32mH","metaDescription":"Siemens 4EP3801-1GK00 mains choke for variable frequency drives. 3-phase, 400/480V AC, 41.2A rated current, 0.32mH, IP00, screw terminals. Sourced to order against 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":"45.8A","Rated Value":"41.2A","Phase number":"3","Type of voltage":"AC","lifecycle_stage":"mature","Product designation":"Netzdrossel f. FU","Protection class IP":"IP00","Inductivity rated value":"0.00032H","Power loss [W] of the coil":"41W","Operating voltage rated value":"400, 480V","Ambient temperature rated value":"50°C","Operating frequency rated value":"50 ... 60Hz","Power loss [W] of the iron core":"26W","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=67995&mlfb=4EP3801-1GK00","alternativesUrl":"https://aoctrl.com/api/mcp/products/4EP3801-1GK00/alternatives.json"},"ai":{"faq":[{"question":"What is the 4EP3801-1GK00 used for?","answer":"It is a 3-phase mains choke (line reactor) for variable-frequency drives. It sits between the supply and the drive input to reduce harmonic distortion, limit inrush current, and protect the drive's rectifier from line transients. The 2% impedance is the typical value for general-purpose drive applications."},{"question":"What are the key electrical ratings of 4EP3801-1GK00?","answer":"Rated current 41.2 A, maximum current 45.8 A at 60 Hz, rated voltage 400/480 V AC, 3-phase, 50/60 Hz, inductance 0.32 mH, relative inductive voltage drop 2%."},{"question":"Where can I buy 4EP3801-1GK00?","answer":"This part is sourced to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/4EP3801-1GK00","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/4EP3801-1GK00 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}}