{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"4EU4321-5DA00-0A","brand":"Siemens","brandSlug":"siemens","productSlug":"4EU4321-5DA00-0A","canonicalUrl":"https://aoctrl.com/siemens/4EU4321-5DA00-0A","factsUrl":"https://aoctrl.com/api/mcp/products/4EU4321-5DA00-0A","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 4EU4321-5DA00-0A commutating choke for converter applications, 3-phase, 639 A rated current, 750 V AC, 0.06 mH, IP00, thermal class H, flat-type terminals.","salesMarkdown":"The Siemens 4EU4321-5DA00-0A is a three-phase commutating choke (line reactor) for converter applications — the component that sits between the drive's input rectifier and the DC link to limit current rise rates and reduce harmonic distortion. Its rated current of 639 A (maximum continuous 710 A) at 750 V AC, 50 Hz, tells you the thermal capacity for a continuous-duty converter line-up; the 888 A peak current figure governs short-duration overloads the choke must survive without saturating. This is a panel-mount component, not a DIN-rail device — the 0.46 m width, 0.435 m height, and 0.265 m depth mean it needs dedicated floor or shelf space inside the enclosure, with clearance for airflow around the IP00 (open-frame) construction. Thermal class H (180 °C insulation system) per IEC 60085 means the winding insulation can sustain the 472 W coil loss plus 321 W iron-core loss at the 40 °C ambient rating without exceeding its temperature limit.","metaTitle":"Siemens 4EU4321-5DA00-0A Commutating Choke, 639A, 750V AC","metaDescription":"Siemens 4EU4321-5DA00-0A commutating choke for converters. 3-phase, 639A rated, 750V AC, 0.06 mH, IP00, thermal class H. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Line/Load Reactors"],"specifications":{"Depth":"0.265m","Width":"0.46m","Height":"0.435m","Maximum":"710A","Rated Value":"639A","Peak current":"888A","Phase number":"3","Type of voltage":"AC","lifecycle_stage":"mature","at DC rated value":"870A","Product designation":"Kommut.-Drossel f. Stromrichter","Protection class IP":"IP00","Inductivity rated value":"0.00006H","Power loss [W] of the coil":"472W","Operating voltage rated value":"750V","Ambient temperature rated value":"40°C","Operating frequency rated value":"50Hz","Power loss [W] of the iron core":"321W","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=511663&mlfb=4EU4321-5DA00-0A","alternativesUrl":"https://aoctrl.com/api/mcp/products/4EU4321-5DA00-0A/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 4EU4321-5DA00-0A?","answer":"This part is sourced to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."},{"question":"What are the key electrical ratings for this choke?","answer":"Rated current 639 A (maximum 710 A), peak current 888 A, operating voltage 750 V AC, 50 Hz, 3-phase, inductance 0.06 mH, relative inductive voltage drop 4 % at rated current."},{"question":"What compliance documentation is available for 4EU4321-5DA00-0A?","answer":"The part is recognized under UL/CSA per the manufacturer's description, and designed to EN 61558-2-20. Thermal class H per IEC 60085. Specific RoHS/REACH declarations should be requested at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/4EU4321-5DA00-0A","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/4EU4321-5DA00-0A 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}}