{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"4EU4521-0AA00","brand":"Siemens","brandSlug":"siemens","productSlug":"4EU4521-0AA00","canonicalUrl":"https://aoctrl.com/siemens/4EU4521-0AA00","factsUrl":"https://aoctrl.com/api/mcp/products/4EU4521-0AA00","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 4EU4521-0AA00 commutating choke for converter, 3-phase, 910 A rated, 690 V AC, 0.053 mH, IP00, flat-type terminals.","salesMarkdown":"The Siemens 4EU4521-0AA00 is a three-phase commutating choke (also called a line reactor or converter reactor) designed to sit between a converter drive and the AC line. Its job is to limit current rise during commutation, reduce harmonic distortion, and protect the drive's input rectifier from line notching and voltage spikes. The 910 A rated current at 690 V AC tells you this is sized for a high-power drive — think large pumps, compressors, or conveyor systems in the 500–800 kW range on a 690 V supply. The 0.053 mH inductance is relatively low, meaning it's a 'fast' reactor that handles steep current edges without saturating; the 4% relative inductive voltage drop confirms it's a light-duty line reactor, not a heavy smoothing choke. The 910 A rating is the thermal continuous current (Ith) at 50 Hz, 40 °C ambient. That's the number you match to the drive's input current — if your drive draws 900 A at full load, this choke has headroom. The 500 W coil loss plus 356 W iron core loss totals about 856 W of heat to dissipate — that's significant. The flat-type terminals accept busbar or large cable lugs, not spring-clamp wiring. 0.46 m wide, 0.435 m tall, 0.293 m deep. IP00, flat-type terminals. Thermal class H insulation, 40 °C ambient, 50/60 Hz.","metaTitle":"Siemens 4EU4521-0AA00 Commutating Choke, 910 A, 690 V, 0.053","metaDescription":"Siemens 4EU4521-0AA00 commutating choke for converters. Rated 910 A at 690 V AC, 0.053 mH, 50/60 Hz. IP00, flat-type terminals. 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":"910A","Rated Value":"910A","Phase number":"3","Type of voltage":"AC","lifecycle_stage":"mature","at DC rated value":"1 115.1A","Product designation":"Kommut.-Drossel f. Stromrichter","Protection class IP":"IP00","Inductivity rated value":"0.000053H","Power loss [W] of the coil":"500W","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":"356W","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=495918&mlfb=4EU4521-0AA00","alternativesUrl":"https://aoctrl.com/api/mcp/products/4EU4521-0AA00/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/4EU4521-0AA00","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/4EU4521-0AA00 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}}