{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"4EU4351-5UB00-0A","brand":"Siemens","brandSlug":"siemens","productSlug":"4EU4351-5UB00-0A","canonicalUrl":"https://aoctrl.com/siemens/4EU4351-5UB00-0A","factsUrl":"https://aoctrl.com/api/mcp/products/4EU4351-5UB00-0A","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 4EU4351-5UB00-0A, mains choke for variable-frequency drives, 3-phase, 400/480 VAC, 1440 A rated, 1600 A max, 50/60 Hz, 4% voltage drop, IP00, flat-type terminals, UL/CSA recognized.","salesMarkdown":"## What this mains choke does in a drive line The Siemens 4EU4351-5UB00-0A is a three-phase mains choke (Netzdrossel f. FU) sized for a 1440 A rated current with a 1600 A maximum, designed to sit between the supply and a variable-frequency drive's input rectifier. Its 17 µH inductance and 4 % relative inductive voltage drop smooth line-side harmonics and limit peak currents during commutation events — the kind of duty that keeps upstream breakers from nuisance-tripping on a multi-drive line. ## Rated current and thermal margin The 874 W coil loss plus 370 W iron loss total about 1.24 kW of heat to vent out of the enclosure — that is not a trivial thermal budget; plan forced airflow or derate if the panel ambient climbs above 40 °C. ## Voltage and frequency range Rated for 400 V and 480 V AC supplies at 50 or 60 Hz, so it covers the common industrial voltages across both 50 Hz and 60 Hz regions without re-rating. The 4 % voltage drop at rated current is the standard impedance for a drive input choke — enough to attenuate harmonics without dropping excessive volts across the reactor under load. Open-frame IP00 — no enclosure, so it mounts inside a cabinet on a dedicated sub-panel or chassis. Dimensions are 0.46 m wide by 0.435 m tall by 0.265 m deep. Main circuit connections are flat-type terminals, which means bus-bar or heavy cable lugs, not spring-cage or screw-clamp. Plan for the physical footprint and the bus-bar routing before the panel layout is locked.","metaTitle":"Siemens 4EU4351-5UB00-0A Mains Choke, 1440 A, 400/480 V","metaDescription":"Siemens 4EU4351-5UB00-0A mains choke for variable-frequency drives. Rated 1440 A, 400/480 VAC, 50/60 Hz, 4% voltage drop. UL/CSA recognized. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Line/Load Reactors"],"specifications":{"Depth":"0.265m","Width":"0.46m","Height":"0.435m","Maximum":"1 600A","Rated Value":"1 440A","Phase number":"3","Type of voltage":"AC","lifecycle_stage":"mature","Product designation":"Netzdrossel f. FU","Protection class IP":"IP00","Inductivity rated value":"0.000017H","Power loss [W] of the coil":"874W","Operating voltage rated value":"400, 480V","Ambient temperature rated value":"40°C","Operating frequency rated value":"50 ... 60Hz","Power loss [W] of the iron core":"370W","Thermal class acc. to IEC 60085":"H","Type of electrical connection for main current circuit":"flat connector","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=217095&mlfb=4EU4351-5UB00-0A","alternativesUrl":"https://aoctrl.com/api/mcp/products/4EU4351-5UB00-0A/alternatives.json"},"ai":{"faq":[{"question":"What compliance documentation does the 4EU4351-5UB00-0A carry?","answer":"It is UL and CSA recognized per EN 61558-2-20. RoHS and REACH compliance documentation is typically provided with the shipment; confirm at quote time."},{"question":"What are the key ratings of the 4EU4351-5UB00-0A?","answer":"Rated 1440 A continuous, 1600 A maximum, 400/480 VAC three-phase, 50/60 Hz, 4% voltage drop, 17 µH inductance, thermal class H, IP00 open-frame."},{"question":"Where can I buy the 4EU4351-5UB00-0A and how is it quoted?","answer":"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 commercial offer."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/4EU4351-5UB00-0A","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/4EU4351-5UB00-0A 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}}