{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"4EU4521-0AP00","brand":"Siemens","brandSlug":"siemens","productSlug":"4EU4521-0AP00","canonicalUrl":"https://aoctrl.com/siemens/4EU4521-0AP00","factsUrl":"https://aoctrl.com/api/mcp/products/4EU4521-0AP00","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 4EU4521-0AP00 commutating choke for converter, 3-phase, 690 V AC, 1310 A rated current, 1638 A peak, 0.03 mH, IP00, flat-type terminals.","salesMarkdown":"## What this choke delivers on a high-current converter line The Siemens 4EU4521-0AP00 is a three-phase commutating choke (Kommutierungsdrossel) for converter applications, rated for a continuous 1,310 A at 690 V AC, 50/60 Hz. That 1,310 A is the thermal maximum — it's the sustained current the choke can carry without exceeding the Class H (180 °C) insulation system's thermal limit at 40 °C ambient. Peak current capability reaches 1,638 A, which handles the inrush and commutation spikes typical of large thyristor or IGBT converters on motor drives or rectifier banks. The 700 W copper loss and 400 W iron loss (1.1 kW total) are the thermal load the panel ventilation must shed; at IP00, the choke relies on the enclosure's airflow, not its own sealed cooling. ## Integration and wiring — flat-terminal, open-frame Main circuit connections are flat-type terminals (Flachanschluss) — expect bus-bar or large-lug cable lugs, not DIN-rail spring clamps. The open-frame IP00 design means the choke must be mounted inside a cabinet that provides the IP rating; plan for adequate clearance around the 0.435 m height, 0.46 m width, and 0.293 m depth to allow airflow and bus-bar routing. At 1.1 kW dissipation, forced ventilation or a derated ambient is likely needed above 40 °C.","metaTitle":"Siemens 4EU4521-0AP00 Commutating Choke, 1310 A, 690 V","metaDescription":"Siemens 4EU4521-0AP00 commutating choke for converter, 3-phase, 690 V, 1310 A rated, 1638 A peak, 0.03 mH, IP00. 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 310A","Rated Value":"1 310A","Peak current":"1 638A","Phase number":"3","Type of voltage":"AC","lifecycle_stage":"mature","at DC rated value":"1 605.3A","Product designation":"Kommut.-Drossel f. Stromrichter","Protection class IP":"IP00","Inductivity rated value":"0.00003H","Power loss [W] of the coil":"700W","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":"400W","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=254002&mlfb=4EU4521-0AP00","alternativesUrl":"https://aoctrl.com/api/mcp/products/4EU4521-0AP00/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/4EU4521-0AP00","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/4EU4521-0AP00 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}}