{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"4EU4321-2BA00-0A","brand":"Siemens","brandSlug":"siemens","productSlug":"4EU4321-2BA00-0A","canonicalUrl":"https://aoctrl.com/siemens/4EU4321-2BA00-0A","factsUrl":"https://aoctrl.com/api/mcp/products/4EU4321-2BA00-0A","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 4EU4321-2BA00-0A commutating choke for converters, 3-phase, 504 A rated current, 750 V AC, 98 µH, IP00 open-frame.","salesMarkdown":"## Line-side filtering for converter harmonics The Siemens 4EU4321-2BA00-0A is a 3-phase commutating choke (line reactor) sized for converter input circuits — it sits between the supply and the drive rectifier to limit current rise rates and reduce harmonic distortion. Rated at 504 A continuous with a maximum of 560 A, and wound for 750 V AC at 50 Hz, it delivers 98 µH inductance with a 4 % relative inductive voltage drop at rated conditions. Open-frame (IP00) construction means this choke is intended for enclosure mounting where the panel provides the environmental seal — not for standalone outdoor or washdown duty. Thermal class H insulation (180 °C rated) keeps the winding safe under full load, with a combined copper and iron loss of 787 W (474 W coil + 313 W core) that must be ventilated out of the cabinet. The 504 A rated current (at 40 °C ambient) defines the continuous load capacity — match this to the drive's input current, not the motor FLA. The 560 A maximum is the thermal overload ceiling; sustained operation above 504 A requires derating or forced cooling. At 750 V AC line-to-line, the choke handles standard 400 V and 690 V drives with headroom. The 98 µH inductance and 4 % voltage drop are tuned for typical 6-pulse rectifier commutation — lower inductance would increase harmonic content, higher would drop more voltage across the choke under load. Power dissipation of 787 W means this is not a small component to ignore in thermal design — the panel must move that heat out.","metaTitle":"4EU4321-2BA00-0A Commutating Choke, 504A, 750V AC, 98µH","metaDescription":"Siemens 4EU4321-2BA00-0A commutating choke for converters, 3-phase, 504A rated, 750V AC, 98µH, IP00. Sourced to order — request quote.","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":"560A","Rated Value":"504A","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":"0.000098H","Power loss [W] of the coil":"474W","Operating voltage rated value":"750V","Ambient temperature rated value":"40°C","Operating frequency rated value":"50Hz","Power loss [W] of the iron core":"313W","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=101929&mlfb=4EU4321-2BA00-0A","alternativesUrl":"https://aoctrl.com/api/mcp/products/4EU4321-2BA00-0A/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 4EU4321-2BA00-0A and get a price?","answer":"This part is sourced and quoted to order through independent distribution. Submit an RFQ for current availability and pricing — confirmed at quote time."},{"question":"What are the key electrical ratings for this choke?","answer":"Rated current 504 A, maximum current 560 A, rated voltage 750 V AC, inductance 98 µH, relative inductive voltage drop 4 %, power dissipation 787 W total."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/4EU4321-2BA00-0A","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/4EU4321-2BA00-0A 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}}