{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"4EU4321-5AA00-0A","brand":"Siemens","brandSlug":"siemens","productSlug":"4EU4321-5AA00-0A","canonicalUrl":"https://aoctrl.com/siemens/4EU4321-5AA00-0A","factsUrl":"https://aoctrl.com/api/mcp/products/4EU4321-5AA00-0A","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 4EU4321-5AA00-0A commutating choke for converter, 3-phase, 500V AC, 900A rated, 1000A max, 35 µH, IP00, thermal class H, flat-type terminals.","salesMarkdown":"The Siemens 4EU4321-5AA00-0A is a 3-phase commutating choke (line reactor) for converter applications, rated 500 V AC with a continuous current of 900 A and a maximum of 1 000 A. Its 35 µH inductance limits di/dt and smooths commutation notches on the line side of a drive or inverter, reducing harmonic distortion and protecting the converter's input rectifier. The 4EU4321-5AA00-0A carries a rated voltage of 500 V AC and a rated current of 900 A, with a maximum of 1 000 A. Power loss splits into 480 W in the coil and 365 W in the iron core, for a total of 845 W at full load. That heat has to leave the enclosure — at IP00, this choke is an open-frame component meant for a ventilated cabinet or a dedicated cubicle. No washdown rating here; keep it dry and allow free airflow around the 0.265 m depth, 0.46 m width, 0.435 m height body. This choke sits on the AC line side of a converter — typically between the mains supply and the drive input. No DIN-rail mounting; it bolts into the panel or chassis via its own mounting feet. At 0.46 m wide and 0.435 m tall, plan for a full-width sub-panel or a dedicated cubicle section.","metaTitle":"Siemens 4EU4321-5AA00-0A Commutating Choke, 900A, 500V AC","metaDescription":"Siemens 4EU4321-5AA00-0A commutating choke for converter, 3-phase, 900A rated, 500V AC, 35 µH, IP00, thermal class H. Available to order.","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":"900A","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":"0.000035H","Power loss [W] of the coil":"480W","Operating voltage rated value":"500V","Ambient temperature rated value":"40°C","Operating frequency rated value":"50Hz","Power loss [W] of the iron core":"365W","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=206538&mlfb=4EU4321-5AA00-0A","alternativesUrl":"https://aoctrl.com/api/mcp/products/4EU4321-5AA00-0A/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 4EU4321-5AA00-0A and how is it quoted?","answer":"The 4EU4321-5AA00-0A is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."},{"question":"What are the key specifications of 4EU4321-5AA00-0A?","answer":"It is a 3-phase commutating choke rated 500 V AC, 900 A continuous (1 000 A max), 35 µH, 4 % voltage drop, IP00, thermal class H, with flat-type terminals."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/4EU4321-5AA00-0A","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/4EU4321-5AA00-0A 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}}