{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"4EP3700-1BK00","brand":"Siemens","brandSlug":"siemens","productSlug":"4EP3700-1BK00","canonicalUrl":"https://aoctrl.com/siemens/4EP3700-1BK00","factsUrl":"https://aoctrl.com/api/mcp/products/4EP3700-1BK00","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 4EP3700-1BK00 mains choke (line reactor) for variable frequency drives, 3-phase, 480V AC, 17.3A maximum current, 1.7 mH, IP00, screw/tab terminals.","salesMarkdown":"The Siemens 4EP3700-1BK00 is a three-phase mains choke (line reactor) designed for installation upstream of a variable frequency drive (VFD). Its job is to smooth the input current, reduce harmonic distortion, and limit inrush current spikes that would otherwise stress the drive's rectifier and DC bus capacitors. Rated for a continuous current of 15.6 A with a maximum of 17.3 A, the choke handles the full-load current of a typical 7.5 kW to 11 kW drive on a 480 V three-phase supply. The 4 % voltage drop means that at full rated current, the drive sees about 461 V instead of 480 V at its input terminals. That is within the operating window of most industrial drives, but if your drive is already marginal on input voltage (e.g., a 460 V unit on a 480 V line), factor the 4 % drop into your voltage budget. That covers the common North American 480 V and international 460 V industrial three-phase supplies. Total power loss is 56.5 W — 46 W in the coil and 10.5 W in the iron core. That heat must be dissipated inside the enclosure. In a sealed IP54 cabinet, that 56.5 W adds to the thermal load; factor it into your ventilation or cooling calculation. Protection class IP00 means the choke has no enclosure — it is an open-frame component intended for mounting inside a panel that provides the environmental protection. The screw-type and tab terminals accept standard ring lugs or fork terminals for the main power connections. The choke measures 0.178 m wide by 0.153 m tall by 0.105 m deep. It is a panel-mount component, not DIN-rail clip-on. Plan for screw-mounting on a backplate with clearance for the screw/tab terminals on top. Because it is IP00, the choke must be mounted inside an enclosure that provides at least finger-safe protection (IP2X or better). Keep at least 50 mm clearance around the choke for airflow to carry away the 56.5 W of heat.","metaTitle":"Siemens 4EP3700-1BK00 Mains Choke, 3-Phase 480V 17.3A","metaDescription":"Siemens 4EP3700-1BK00 mains choke for variable frequency drives. 3-phase, 480V AC, 17.3A max, 1.7 mH, IP00. Mature lifecycle, sourced to order. UL/CSA recognized per EN 61558-2-20.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Line/Load Reactors"],"specifications":{"Depth":"0.105m","Width":"0.178m","Height":"0.153m","Maximum":"17.3A","Rated Value":"15.6A","Phase number":"3","Type of voltage":"AC","lifecycle_stage":"mature","Product designation":"Netzdrossel f. FU","Protection class IP":"IP00","Inductivity rated value":"0.0017H","Power loss [W] of the coil":"46W","Operating voltage rated value":"460, 480V","Ambient temperature rated value":"45°C","Operating frequency rated value":"50 ... 60Hz","Power loss [W] of the iron core":"10.5W","Thermal class acc. to IEC 60085":"B","Type of electrical connection for main current circuit":"screw-type terminals / tab 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=55313&mlfb=4EP3700-1BK00","alternativesUrl":"https://aoctrl.com/api/mcp/products/4EP3700-1BK00/alternatives.json"},"ai":{"faq":[{"question":"What compliance documentation does 4EP3700-1BK00 carry?","answer":"The choke is UL/CSA recognized under EN 61558-2-20, the standard for chokes and reactors. That covers the North American market. For EU compliance, the EN 61558-2-20 listing implies CE marking via the harmonized standard. RoHS and REACH documentation should be available from Siemens on request."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/4EP3700-1BK00","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/4EP3700-1BK00 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}}