{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"4EU4551-4UA00","brand":"Siemens","brandSlug":"siemens","productSlug":"4EU4551-4UA00","canonicalUrl":"https://aoctrl.com/siemens/4EU4551-4UA00","factsUrl":"https://aoctrl.com/api/mcp/products/4EU4551-4UA00","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 4EU4551-4UA00 Netzdrossel f. FU, 3-phase AC mains choke, rated 1600 A at 690 V, 0.015 mH, IP00, 2% voltage drop, flat-type terminals.","salesMarkdown":"Siemens 4EU4551-4UA00 is a 3-phase AC mains choke — a line reactor — designed for the input side of a variable-frequency drive (Netzdrossel f. FU). Its job is to limit harmonic distortion, smooth inrush current, and protect the drive DC bus from line transients. The headline number is 1600 A rated current at 690 V AC, 50/60 Hz, which means it sits between a 690 V drive and the supply on a 1600 A feeder — a big industrial line, not a light-duty panel. The 2 % relative inductive voltage drop is the sweet spot for most drive applications: enough inductance to clean up harmonics without dropping so much voltage that the drive loses torque headroom. ## Physical footprint and mounting reality This choke measures 0.46 m wide by 0.435 m tall by 0.293 m deep — roughly the size of a small suitcase. It is IP00, meaning no enclosure: the core and windings are exposed. That is normal for a choke this size; it goes inside a drive cabinet or a dedicated enclosure, not on a wall. The main circuit connects via flat-type terminals, which means busbar or heavy-gauge cable lugs, not spring-clamp or screw terminals. Plan for bolted connections and a panel cutout that clears the 0.46 m width. ## Thermal design and duty cycle Rated for a 40 °C ambient with Class H insulation per IEC 60085 — Class H is 180 °C hot-spot, so this choke can run hot without cooking the winding varnish. Total power loss splits into 725 W in the coil and 325 W in the iron core, summing to about 1 kW of heat that must be ventilated out of the cabinet. That is the number the panel cooling engineer needs: 1 kW of continuous heat rejection from this one component.","metaTitle":"Siemens 4EU4551-4UA00 Mains Choke, 1600A 3-Phase 690V AC","metaDescription":"Siemens 4EU4551-4UA00 mains choke for drive (Netzdrossel f. FU). 1600A rated, 690V AC, 3-phase, IP00, 0.015mH. Mature lifecycle; sourced to order. Request quote.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Line/Load Reactors"],"specifications":{"Depth":"0.293m","Width":"0.46m","Height":"0.435m","Maximum":"1 600A","Rated Value":"1 600A","Phase number":"3","Type of voltage":"AC","lifecycle_stage":"mature","Product designation":"Netzdrossel f. FU","Protection class IP":"IP00","Inductivity rated value":"0.000015H","Power loss [W] of the coil":"725W","Operating voltage rated value":"690, 690V","Ambient temperature rated value":"40°C","Operating frequency rated value":"60 ... 50Hz","Power loss [W] of the iron core":"325W","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":"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=369171&mlfb=4EU4551-4UA00","alternativesUrl":"https://aoctrl.com/api/mcp/products/4EU4551-4UA00/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/4EU4551-4UA00","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/4EU4551-4UA00 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}}