{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"4EU3921-6EA00-0A","brand":"Siemens","brandSlug":"siemens","productSlug":"4EU3921-6EA00-0A","canonicalUrl":"https://aoctrl.com/siemens/4EU3921-6EA00-0A","factsUrl":"https://aoctrl.com/api/mcp/products/4EU3921-6EA00-0A","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 4EU3921-6EA00-0A commutating choke for converter, 3-phase, 595 A rated current, 660 A max, 500 V AC, 50 Hz, IP00, screw/flat-type terminals.","salesMarkdown":"The Siemens 4EU3921-6EA00-0A is a three-phase commutating choke (line reactor) designed for use on the AC input or DC link of a converter drive. It limits current rise during commutation, reducing harmonic distortion and protecting the converter's semiconductor devices from excessive di/dt stress. Rated for 595 A continuous (I_LN) with a maximum short-time rating of 660 A at 50 Hz, it handles the full-load current of a large drive system — think multi-hundred-kilowatt motors, not fractional-horsepower VFDs. The DC rated value of 808.8 A means it can also sit in the DC link of a 6-pulse or 12-pulse converter, where the current is higher for the same power throughput. A 4 % drop is typical for commutating chokes in industrial drives — it provides enough impedance to limit fault current without dropping excessive voltage under load. Rated operating voltage is 500 V AC, 50 Hz. That places it in the 400–500 V class common for European and Asian industrial mains. It is not rated for 690 V systems — verify your line voltage before specifying. It requires the surrounding enclosure to provide the ingress protection. The main circuit connection uses screw-type terminals on flat connectors — expect busbar or cable lug terminations, not spring-cage or plug-in. Panel builders should plan for the 0.229 m depth, 0.41 m width, and 0.385 m height when laying out the cabinet floor. This is a substantial component: 595 A continuous means the busbar work and cable sizing must match. The flat connector interface is typical for high-current chokes — expect M10 or M12 bolt holes, not DIN-rail mounting. It bolts directly to the panel backplate or chassis. It is designed and tested to EN 61558-2-20, the standard for small transformers and chokes for power supplies and converters. That covers safety, thermal performance, and dielectric strength.","metaTitle":"Siemens 4EU3921-6EA00-0A Commutating Choke, 595 A, IP00","metaDescription":"Siemens 4EU3921-6EA00-0A commutating choke for converter, 3-phase, 595 A rated, 660 A max, 500 V, 50 Hz, IP00. Sourced to order. Request a quote.","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":"660A","Rated Value":"595A","Phase number":"3","Type of voltage":"AC","lifecycle_stage":"mature","at DC rated value":"808.8A","Product designation":"Kommut.-Drossel f. Stromrichter","Protection class IP":"IP00","Inductivity rated value":"0.000056H","Operating voltage rated value":"500V","Ambient temperature rated value":"40°C","Operating frequency rated value":"50Hz","Thermal class acc. to IEC 60085":"H","Type of electrical connection for main current circuit":"flat connector / screw-type terminals","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=424015&mlfb=4EU3921-6EA00-0A","alternativesUrl":"https://aoctrl.com/api/mcp/products/4EU3921-6EA00-0A/alternatives.json"},"ai":{"faq":[{"question":"Will 4EU3921-6EA00-0A drop into a panel specified around 3RV6011-0CA10?","answer":"No. The 3RV6011-0CA10 is a 0.25 A motor-protective circuit breaker on a 45 mm DIN-rail footprint. The 4EU3921-6EA00-0A is a 595 A line reactor measuring 0.41 m wide × 0.385 m tall — completely different scale, mounting, and function."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/4EU3921-6EA00-0A","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/4EU3921-6EA00-0A 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}}