{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"4EP4000-2CK00","brand":"Siemens","brandSlug":"siemens","productSlug":"4EP4000-2CK00","canonicalUrl":"https://aoctrl.com/siemens/4EP4000-2CK00","factsUrl":"https://aoctrl.com/api/mcp/products/4EP4000-2CK00","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 4EP4000-2CK00 mains choke for frequency converters, 3-phase, 400/480V AC, 78.3A rated (87A max), 0.17mH, 2% voltage drop, IP00 open-frame, flat-type terminals.","salesMarkdown":"## Mains choke for VFD input conditioning The Siemens 4EP4000-2CK00 is a three-phase mains choke (Netzdrossel f. FU) designed for the input side of frequency converters. It carries a rated current of 78.3 A with a maximum of 87 A at 60 Hz, and an inductance of 0.17 mH. The 2% relative inductive voltage drop means it smooths line harmonics and limits inrush without dropping excessive voltage under load — a common spec for VFD input reactors that keeps the DC bus stable. The IP00 open-frame construction means it mounts inside a cabinet — no washdown rating, no outdoor exposure. The 78.3 A rated current (87 A maximum) sets the continuous load the choke can carry without saturating the core. Match this to the drive's input current rating — a 75 kW drive at 400 V typically draws around 130 A, so this choke suits a smaller drive (roughly 37–45 kW range) or a derated application. The 0.17 mH inductance value determines the harmonic attenuation: lower inductance gives less filtering but also less voltage drop. At 2% drop it's a standard impedance reactor, not a heavy-duty harmonic filter. Thermal class B per IEC 60085 means the insulation system withstands 130 °C hot-spot temperature. The combined coil loss (55 W) and iron-core loss (38 W) total 93 W dissipated as heat inside the cabinet — factor that into your enclosure ventilation. The ambient temperature rating of 50 °C is the maximum air temperature around the choke; derate current above that. Termination is via flat-type connectors (Type of electrical connection for main current circuit: flat connector). These are blade-style lugs, not ring terminals or screw clamps — verify your cable lug compatibility before wiring. ## Integration notes Mounting dimensions: 0.219 m wide, 0.179 m tall, 0.143 m deep. The open-frame IP00 construction requires a clean, dry cabinet environment — no washdown zones, no dust-laden air. Plan for the 93 W total heat dissipation in your thermal budget. Flat-type terminals expect matching blade connectors; pre-crimp or order the correct mating lugs.","metaTitle":"Siemens 4EP4000-2CK00 Mains Choke for Drives, 87A, 0.17mH","metaDescription":"Siemens 4EP4000-2CK00 mains choke for frequency converters. 3-phase, 400/480V AC, rated 78.3A (max 87A), 0.17mH, 2% voltage drop. IP00 open-frame. Quoted to order against 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":"87A","Rated Value":"78.3A","Phase number":"3","Type of voltage":"AC","lifecycle_stage":"mature","Product designation":"Netzdrossel f. FU","Protection class IP":"IP00","Inductivity rated value":"0.00017H","Power loss [W] of the coil":"55W","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":"38W","Thermal class acc. to IEC 60085":"B","Type of electrical connection for main current circuit":"flat connector","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=282150&mlfb=4EP4000-2CK00","alternativesUrl":"https://aoctrl.com/api/mcp/products/4EP4000-2CK00/alternatives.json"},"ai":{"faq":[{"question":"What is 4EP4000-2CK00 used for?","answer":"It is a three-phase mains choke (line reactor) for frequency converters, installed on the input side to smooth line harmonics, limit inrush current, and protect the drive rectifier from grid disturbances."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/4EP4000-2CK00","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/4EP4000-2CK00 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}}