{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"4EU4321-0CE10-0B","brand":"Siemens","brandSlug":"siemens","productSlug":"4EU4321-0CE10-0B","canonicalUrl":"https://aoctrl.com/siemens/4EU4321-0CE10-0B","factsUrl":"https://aoctrl.com/api/mcp/products/4EU4321-0CE10-0B","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 4EU4321-0CE10-0B commutating choke for converter, 3-phase, 400V AC, 1000A rated, 60Hz, 0.036mH, IP00, flat-type terminals.","salesMarkdown":"The Siemens 4EU4321-0CE10-0B is a commutating choke (line reactor) for converter drives — three-phase AC, rated 1000 A continuous at 400 V, 60 Hz. That 1000 A figure is the thermal maximum (Ith) at 40 °C ambient, so it carries the full converter current without saturating. The 0.036 mH inductance and 6 % relative inductive voltage drop are sized for typical 6-pulse rectifier front ends, limiting di/dt and reducing harmonic stress on the DC link capacitors. At DC the same choke is rated 1225.4 A — that's the current it can handle if the converter output is feeding a DC bus or a regenerative load. The IP00 open-frame construction means it's intended for enclosure mounting, not standalone floor placement; plan for a cabinet with proper ventilation and clearance around the 0.435 m height × 0.46 m width × 0.265 m depth footprint. ## Thermal class and connection Thermal class H per IEC 60085 means the insulation system withstands 180 °C hot-spot temperature — that's the margin for overload cycles and high ambient inside a drive cabinet. The main circuit terminates on flat-type connectors (bus-bar style), not ring lugs or spring cages; plan for bolted connections sized to 1000 A continuous.","metaTitle":"Siemens 4EU4321-0CE10-0B Commutating Choke, 1000A 3-Phase AC","metaDescription":"Siemens 4EU4321-0CE10-0B commutating choke for converter drives. Rated 1000A, 400V AC, 60Hz, 3-phase. IP00 open-frame, flat-type terminals. 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":"1 000A","Rated Value":"1 000A","Phase number":"3","Type of voltage":"AC","lifecycle_stage":"mature","at DC rated value":"1 225.4A","Product designation":"Kommut.-Drossel f. Stromrichter","Protection class IP":"IP00","Inductivity rated value":"0.000036H","Operating voltage rated value":"400V","Ambient temperature rated value":"40°C","Operating frequency rated value":"60Hz","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":"6%"}},"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=188493&mlfb=4EU4321-0CE10-0B","alternativesUrl":"https://aoctrl.com/api/mcp/products/4EU4321-0CE10-0B/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 4EU4321-0CE10-0B and what is the lead time?","answer":"This choke is sourced to order through independent distribution against an RFQ. Availability and current pricing are confirmed at quote time — no stock count or lead-time figure is published here, but the RFQ process gives you a firm delivery commitment."},{"question":"What are the key ratings for 4EU4321-0CE10-0B?","answer":"Rated 1000 A continuous at 400 V AC, 60 Hz, three-phase. Inductance is 0.036 mH with a 6 % relative inductive voltage drop. DC current rating is 1225.4 A. Thermal class H insulation, IP00 enclosure, flat-type terminals."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/4EU4321-0CE10-0B","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/4EU4321-0CE10-0B 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}}