{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"4EU4521-0CC10-0B","brand":"Siemens","brandSlug":"siemens","productSlug":"4EU4521-0CC10-0B","canonicalUrl":"https://aoctrl.com/siemens/4EU4521-0CC10-0B","factsUrl":"https://aoctrl.com/api/mcp/products/4EU4521-0CC10-0B","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 4EU4521-0CC10-0B commutating choke for converter, 3-phase, 1059 A rated, 1060 V AC, 50 Hz, 45 µH, IP00, flat-type terminals.","salesMarkdown":"The Siemens 4EU4521-0CC10-0B is a three-phase commutating choke for converter applications, rated 1059 A at 1060 V AC, 50 Hz. Its 45 µH inductance limits di/dt and reduces commutation notches on the line side of a thyristor or IGBT converter bridge. This is a high-current, open-frame (IP00) component sized for large drives or power converters. The 1059 A continuous rating and 1060 V insulation class put it in the heavy-industrial band — think mill drives, marine propulsion converters, or large pump/compressor VFD line-ups. Total power loss at rated load sums to 1010 W (660 W coil + 350 W iron core), which means forced-air cooling or a dedicated ventilation slot in the enclosure is mandatory. The thermal class H winding (IEC 60085) allows a 180 °C hot-spot limit, but the 40 °C ambient rating is the design point — derate above that. ## Sizing and integration notes Physical envelope: 0.46 m wide × 0.435 m high × 0.293 m deep. Plan for floor-mount or heavy steel sub-panel. Termination is via flat-type connectors, so the mating busbars or cable lugs need to match a flat interface. No screw-clamp or spring-cage option — budget for custom busbar fabrication if your panel is built around ring terminals. The relative inductive voltage drop is 2.96 % at rated current, frequency, and voltage. That figure tells you the choke's impedance at line frequency — useful for calculating the actual voltage available at the converter input under load.","metaTitle":"Siemens 4EU4521-0CC10-0B Commutating Choke, 1059 A, 1060 V,","metaDescription":"Siemens 4EU4521-0CC10-0B commutating choke for converter. Rated 1059 A at 1060 V AC, 50 Hz, 45 µH, IP00. Mature lifecycle. 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":"1 059A","Rated Value":"1 059A","Phase number":"3","Type of voltage":"AC","lifecycle_stage":"mature","Product designation":"Kommut.-Drossel f. Stromrichter","Protection class IP":"IP00","Inductivity rated value":"0.000045H","Power loss [W] of the coil":"660W","Operating voltage rated value":"1 060V","Ambient temperature rated value":"40°C","Operating frequency rated value":"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":"2.96%"}},"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=173484&mlfb=4EU4521-0CC10-0B","alternativesUrl":"https://aoctrl.com/api/mcp/products/4EU4521-0CC10-0B/alternatives.json"},"ai":{"faq":[{"question":"What is the physical size of 4EU4521-0CC10-0B?","answer":"Width 0.46 m, height 0.435 m, depth 0.293 m. This is a floor-mount or heavy sub-panel component, not DIN-rail mountable."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/4EU4521-0CC10-0B","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/4EU4521-0CC10-0B 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}}