{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"4EU4521-1AA00","brand":"Siemens","brandSlug":"siemens","productSlug":"4EU4521-1AA00","canonicalUrl":"https://aoctrl.com/siemens/4EU4521-1AA00","factsUrl":"https://aoctrl.com/api/mcp/products/4EU4521-1AA00","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 4EU4521-1AA00 commutating choke for converter, 3-phase, 690 V AC, rated current 1000 A, inductance 0.048 mH, IP00, flat-type terminals.","salesMarkdown":"The Siemens 4EU4521-1AA00 is a three-phase commutating choke (also called a line reactor or converter choke) rated for 1000 A continuous at 690 V AC, 50/60 Hz. It sits between the AC supply and a converter's input to limit current rise during commutation, reduce harmonic distortion, and protect the DC-link capacitors from voltage notching. The 0.048 mH inductance at 4 % relative inductive voltage drop (on the measurement-level current, voltage, and frequency) is sized for high-current drives and rectifier front-ends where a low-impedance grid can cause excessive di/dt. Rated 1000 A at 690 V AC, three-phase — this choke handles the full line current of a large converter or drive input without saturating. The DC-rated value of 1225.4 A gives headroom for the DC-link side if used in that leg. Power loss splits into 500 W in the coil and 350 W in the iron core, so the total 850 W must be vented from the enclosure; an IP00 open-frame design means it mounts in a clean, dry cabinet with forced airflow — not in a washdown or dusty environment. Thermal class H (180 °C insulation) per IEC 60085 allows high internal temperatures, but the 40 °C ambient rating sets the cooling baseline: derate above that. The footprint measures 0.46 m wide by 0.435 m tall by 0.293 m deep, so plan for a sub-panel or chassis mount, not a DIN rail. IP00 means no integral enclosure; the installer provides the cabinet and cooling.","metaTitle":"Siemens 4EU4521-1AA00 Commutating Choke, 1000 A, 690 V AC","metaDescription":"Siemens 4EU4521-1AA00 commutating choke for converters, 3-phase, 1000 A rated, 690 V AC, 0.048 mH, IP00. 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 000A","Rated Value":"1 000A","Phase number":"3","Type of voltage":"AC","lifecycle_stage":"mature","at DC rated value":"1 225.4A","Product designation":"Kommut.-Drossel f. Stromrichter","Protection class IP":"IP00","Inductivity rated value":"0.000048H","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":"350W","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=311461&mlfb=4EU4521-1AA00","alternativesUrl":"https://aoctrl.com/api/mcp/products/4EU4521-1AA00/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 4EU4521-1AA00 and how is it quoted?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."},{"question":"What are the key specifications of 4EU4521-1AA00?","answer":"It is a three-phase commutating choke rated 1000 A at 690 V AC, 50/60 Hz, with 0.048 mH inductance, 4 % voltage drop, IP00 enclosure, and flat-type terminals."},{"question":"What compliance documentation does Siemens provide for 4EU4521-1AA00?","answer":"The part is designed to VDE 0532 and thermal class H per IEC 60085. For RoHS, REACH, or UL documentation, request the manufacturer's declaration at quote time — it is not pre-loaded in the standard listing."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/4EU4521-1AA00","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/4EU4521-1AA00 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}}