{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"4EU4521-0BN10","brand":"Siemens","brandSlug":"siemens","productSlug":"4EU4521-0BN10","canonicalUrl":"https://aoctrl.com/siemens/4EU4521-0BN10","factsUrl":"https://aoctrl.com/api/mcp/products/4EU4521-0BN10","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 4EU4521-0BN10 commutating choke (line reactor) for converter, 3-phase, 380 V AC, 532 A rated current, 0.18 mH, IP00, Class H insulation, flat-type terminals.","salesMarkdown":"The Siemens 4EU4521-0BN10 is a commutating choke (line reactor) designed for converter applications. It is a 3-phase AC choke rated for 380 V operating voltage and 532 A continuous current, with an inductance of 0.00018 H (0.18 mH). This choke limits current rise and harmonics on the line side of a converter, protecting both the converter and upstream equipment. The 532 A rating means it can handle the full-load current of a large drive or rectifier without saturating. The 532 A rated current is the maximum continuous current the choke can carry at the rated 380 V AC and 50 Hz without exceeding its thermal limits. For DC applications, the choke is rated at 651.9 A DC — a higher figure because DC current has no skin effect and lower core losses. This makes the 4EU4521-0BN10 suitable for both AC and DC converter circuits within those limits. Total power loss is 1027 W (737 W in the coil plus 290 W in the iron core) at the rated operating point. That loss becomes heat inside the panel — plan for forced ventilation or derating if ambient exceeds 40 °C. The Class H insulation rated to 180 °C hot-spot gives thermal headroom for short overloads. IP00 protection means the choke has no enclosure — it is an open-frame component intended for mounting inside a switchgear cabinet or converter cubicle. The flat-type main circuit terminals accept busbar or large cable lugs, typical for high-current power connections. This choke is deployed on the AC line side of variable-frequency drives, DC drives, rectifiers, and other power converters to smooth current, reduce harmonic distortion, and limit inrush. It is a standard component in industrial motor control centers and large drive systems where a 3-phase, 380 V, 532 A line reactor is called for.","metaTitle":"Siemens 4EU4521-0BN10 Commutating Choke, 532 A, 380 V AC, 3-","metaDescription":"Siemens 4EU4521-0BN10 commutating choke for converter, 532 A rated, 380 V AC, 3-phase, 0.18 mH, IP00, Class H insulation. Available 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":"532A","Rated Value":"532A","Phase number":"3","Type of voltage":"AC","lifecycle_stage":"mature","at DC rated value":"651.9A","Product designation":"Kommut.-Drossel f. Stromrichter","Protection class IP":"IP00","Inductivity rated value":"0.00018H","Power loss [W] of the coil":"737W","Operating voltage rated value":"380V","Ambient temperature rated value":"40°C","Operating frequency rated value":"50Hz","Power loss [W] of the iron core":"290W","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":"13.47%"}},"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=91948&mlfb=4EU4521-0BN10","alternativesUrl":"https://aoctrl.com/api/mcp/products/4EU4521-0BN10/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 4EU4521-0BN10 and get a price?","answer":"The 4EU4521-0BN10 is available to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time."},{"question":"What are the key ratings of 4EU4521-0BN10?","answer":"The 4EU4521-0BN10 is a 3-phase commutating choke rated for 380 V AC, 532 A continuous (651.9 A DC), 0.18 mH inductance, 13.47 % voltage drop, IP00, Class H insulation, with flat-type terminals."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/4EU4521-0BN10","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/4EU4521-0BN10 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}}