{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"4EU3921-2CA00-0A","brand":"Siemens","brandSlug":"siemens","productSlug":"4EU3921-2CA00-0A","canonicalUrl":"https://aoctrl.com/siemens/4EU3921-2CA00-0A","factsUrl":"https://aoctrl.com/api/mcp/products/4EU3921-2CA00-0A","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 4EU3921-2CA00-0A commutating choke for converter, 3-phase, 750V AC, 560A max, 50Hz, IP00, flat-type terminal.","salesMarkdown":"The Siemens 4EU3921-2CA00-0A is a three-phase commutating choke designed for converter applications, also referred to as a line reactor or DC-link choke depending on the circuit position. It carries a maximum continuous current of 560 A at 50 Hz and a rated operating voltage of 750 V AC, with a peak current capability of 700 A. ## Electrical and thermal ratings The peak current is 700 A. The DC-rated current is 686.2 A, which is relevant for applications where the choke is used in the DC link rather than the AC line. The rated inductance of 0.077 mH and a relative voltage drop of 4% at rated current and frequency define the impedance characteristic for harmonic attenuation and current smoothing. Total power loss at rated conditions is 620 W, split between the coil (380 W) and the iron core (240 W). The thermal class is H per IEC 60085, which means the insulation system is rated for a maximum hot-spot temperature of 180 °C. The ambient temperature rating is 40 °C. ## Construction and mounting The enclosure is IP00 — no protection against ingress of solid objects or moisture, so it must be installed inside a panel or cabinet that provides the required environmental sealing. Dimensions are 0.41 m wide, 0.385 m high, and 0.229 m deep. The main current circuit connects via flat-type terminals, which are typical for high-current busbar or cable-lug connections. The choke is designed for converter duty and complies with EN 61558-2-20; it carries UL/CSA recognition.","metaTitle":"Siemens 4EU3921-2CA00-0A Commutating Choke, 560A, 750V AC","metaDescription":"Siemens 4EU3921-2CA00-0A commutating choke for converter, rated 560A at 50Hz, 750V AC, IP00. Sourced to order against RFQ. Available through independent distribution.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Line/Load Reactors"],"specifications":{"Depth":"0.229m","Width":"0.41m","Height":"0.385m","Maximum":"560A","Rated Value":"504A","Peak current":"700A","Phase number":"3","Type of voltage":"AC","lifecycle_stage":"mature","at DC rated value":"686.2A","Product designation":"Kommut.-Drossel f. Stromrichter","Protection class IP":"IP00","Inductivity rated value":"0.000077H","Power loss [W] of the coil":"380W","Operating voltage rated value":"750V","Ambient temperature rated value":"40°C","Operating frequency rated value":"50Hz","Power loss [W] of the iron core":"240W","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=152327&mlfb=4EU3921-2CA00-0A","alternativesUrl":"https://aoctrl.com/api/mcp/products/4EU3921-2CA00-0A/alternatives.json"},"ai":{"faq":[{"question":"What are the key electrical ratings of the 4EU3921-2CA00-0A?","answer":"The choke is rated for a maximum continuous current of 560 A at 50 Hz, a rated voltage of 750 V AC, and a peak current of 700 A. The rated inductance is 0.077 mH with a 4% voltage drop at rated conditions."},{"question":"Where can I buy the 4EU3921-2CA00-0A?","answer":"The part is sourced to order against an RFQ through independent distribution. Contact our sales desk for a quote; availability and current pricing are confirmed at quote time."},{"question":"What compliance documentation is available for the 4EU3921-2CA00-0A?","answer":"The choke complies with EN 61558-2-20 and carries UL/CSA recognition as noted on the product label. RoHS and REACH declarations are typically available from the manufacturer upon request."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/4EU3921-2CA00-0A","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/4EU3921-2CA00-0A 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}}