{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"4EU4321-0CA10-0A","brand":"Siemens","brandSlug":"siemens","productSlug":"4EU4321-0CA10-0A","canonicalUrl":"https://aoctrl.com/siemens/4EU4321-0CA10-0A","factsUrl":"https://aoctrl.com/api/mcp/products/4EU4321-0CA10-0A","rawCanonicalId":null},"summary":{"shortDescription":"Siemens, commutating choke for converters, 4EU4321-0CA10-0A, 3-phase, 400V AC, 1600A max, 1440A rated, 50Hz, IP00, class H insulation, flat-type terminals.","salesMarkdown":"## What this commutating choke does in a drive line The Siemens 4EU4321-0CA10-0A is a 3-phase commutating choke for converters, rated 400V AC at 50Hz. It handles a maximum current of 1600A and a rated continuous current of 1440A, with a DC-rated value of 1960.7A. The 0.014 mH inductance and 4% relative inductive voltage drop limit the rate of current rise during commutation, protecting the converter's semiconductors from di/dt stress. This is the part that sits between the line supply and the converter input in a high-current drive system — think large pumps, conveyors, or compressors on a 400V plant network. ## Thermal and mechanical constraints for panel integration The choke measures 0.435m high by 0.46m wide by 0.265m deep — a substantial block that needs floor or heavy shelf mounting, not a DIN rail. IP00 means no enclosure protection; it requires a cabinet with forced ventilation or derating if ambient exceeds 40°C. Total power loss is 980W (650W coil + 330W iron core), so the panel cooling budget must account for nearly a kilowatt of heat rejection. Class H insulation (180°C) gives headroom for overload cycles, but the 40°C ambient rating is the design point for continuous duty. Lifecycle status is mature. No official successor issued. Flat-type terminals for high-current connection. Sourced to order against RFQ.","metaTitle":"Siemens 4EU4321-0CA10-0A Commutating Choke, 1600A, 400V, 3-P","metaDescription":"Siemens 4EU4321-0CA10-0A commutating choke for converters. 1600A max, 1440A rated, 400V AC, 3-phase, 50Hz. IP00, class H insulation. 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 600A","Rated Value":"1 440A","Phase number":"3","Type of voltage":"AC","lifecycle_stage":"mature","at DC rated value":"1 960.7A","Product designation":"Kommut.-Drossel f. Stromrichter","Protection class IP":"IP00","Inductivity rated value":"0.000014H","Power loss [W] of the coil":"650W","Operating voltage rated value":"400V","Ambient temperature rated value":"40°C","Operating frequency rated value":"50Hz","Power loss [W] of the iron core":"330W","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=516824&mlfb=4EU4321-0CA10-0A","alternativesUrl":"https://aoctrl.com/api/mcp/products/4EU4321-0CA10-0A/alternatives.json"},"ai":{"faq":[{"question":"What is the physical size of this choke?","answer":"0.435m high, 0.46m wide, 0.265m deep. IP00 enclosure rating requires a cabinet for protection."},{"question":"What compliance documentation does this brand provide for 4EU4321-0CA10-0A?","answer":"The part is designed to EN 61558-2-20 for chokes. Standard Siemens documentation includes a declaration of conformity to the Low Voltage Directive; specific RoHS/REACH declarations are available on request from the manufacturer."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/4EU4321-0CA10-0A","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/4EU4321-0CA10-0A 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}}