{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"4EU4551-6UA00","brand":"Siemens","brandSlug":"siemens","productSlug":"4EU4551-6UA00","canonicalUrl":"https://aoctrl.com/siemens/4EU4551-6UA00","factsUrl":"https://aoctrl.com/api/mcp/products/4EU4551-6UA00","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 4EU4551-6UA00 mains choke for frequency converters, 3-phase, 500V AC, 1250A rated current, 0.029 mH, IP00, flat-type terminals, UL/CSA recognized.","salesMarkdown":"## What this choke does on the line side The Siemens 4EU4551-6UA00 is a three-phase mains choke (Netzdrossel f. FU) rated for 1250 A continuous at 500 V AC, with a relative voltage drop of 4 % at rated current and frequency. That 4 % inductive drop is the key design parameter — it limits the rate of rise of fault current and smooths the DC-bus charging profile on the drive input, which is why you see this choke between the supply and the frequency converter rather than on the motor side. Inductance is 0.029 mH (29 µH), wound for a 50/60 Hz line. The 711 W copper loss plus 369 W iron loss sum to roughly 1.08 kW of heat that has to leave the enclosure — that is not a trivial thermal load. With IP00 protection and thermal class H (180 °C insulation system per IEC 60085), this choke expects to be mounted in a ventilated cabinet where that heat can rise out; it is not a sealed-box part. Footprint is 0.46 m wide × 0.435 m tall × 0.293 m deep — about the size of a small suitcase. Plan for M10 or M12 bolt-down terminations and a cutout that clears the 460 mm width plus bending radius for incoming cables.","metaTitle":"Siemens 4EU4551-6UA00 Mains Choke, 1250A, 500V, 3-Phase","metaDescription":"Siemens 4EU4551-6UA00 mains choke for frequency converters. 1250A rated current, 500V AC, 3-phase, IP00. 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":"0.293m","Width":"0.46m","Height":"0.435m","Maximum":"1 250A","Rated Value":"1 250A","Phase number":"3","Type of voltage":"AC","lifecycle_stage":"mature","Product designation":"Netzdrossel f. FU","Protection class IP":"IP00","Inductivity rated value":"0.000029H","Power loss [W] of the coil":"711W","Operating voltage rated value":"500, 500V","Ambient temperature rated value":"40°C","Operating frequency rated value":"60 ... 50Hz","Power loss [W] of the iron core":"369W","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=181344&mlfb=4EU4551-6UA00","alternativesUrl":"https://aoctrl.com/api/mcp/products/4EU4551-6UA00/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 4EU4551-6UA00 and how is it quoted?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution channels. Availability and current pricing are confirmed at quote time."},{"question":"What are the key ratings of the 4EU4551-6UA00 mains choke?","answer":"It is a 3-phase AC choke rated 1250 A at 500 V, 50/60 Hz, with 0.029 mH inductance and a 4 % relative voltage drop. Copper loss is 711 W, iron loss 369 W. Thermal class H, IP00, flat-type terminals."},{"question":"What compliance documentation does Siemens provide for 4EU4551-6UA00?","answer":"The part is recognized under VDE 0532 and carries UL and CSA recognition marks on the nameplate. RoHS/REACH compliance is standard for Siemens industrial components of this era but should be confirmed from the manufacturer's current declaration."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/4EU4551-6UA00","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/4EU4551-6UA00 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}}