{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"4EU4321-0AW00-0A","brand":"Siemens","brandSlug":"siemens","productSlug":"4EU4321-0AW00-0A","canonicalUrl":"https://aoctrl.com/siemens/4EU4321-0AW00-0A","factsUrl":"https://aoctrl.com/api/mcp/products/4EU4321-0AW00-0A","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 4EU4321-0AW00-0A commutating choke for converter, 3-phase, 400V AC, 50Hz, 1310A AC max current, 18µH inductance, IP00 open-frame, Class H insulation.","salesMarkdown":"It handles a maximum AC current of 1,310 A and carries a rated inductance of 18 µH. Total power loss breaks down to 680 W in the coil and 325 W in the iron core, so plan for about 1 kW of heat rejection in the enclosure. The Class H insulation (180°C thermal class per IEC 60085) gives headroom for high-ambient or overload conditions, but the IP00 rating means this is an open-frame component — it needs a cabinet or panel for protection against dust and contact. ## Sizing and integration Footprint is 0.46 m wide by 0.435 m tall by 0.265 m deep. Flat-type terminals expect busbar or cable lugs. The DC rated current of 1,605.3 A is higher than the AC maximum, which is typical for a commutating choke — the DC link sees continuous current while the AC side sees the RMS of a pulsed waveform. If your converter's DC bus current exceeds 1,605 A, this choke saturates; size up.","metaTitle":"Siemens 4EU4321-0AW00-0A Commutating Choke, 1310A AC, 18µH","metaDescription":"Siemens 4EU4321-0AW00-0A commutating choke for converter, 3-phase, 400V AC, 50Hz, 1310A AC max, 18µH, IP00, Class H. Active production. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Line/Load Reactors"],"specifications":{"Depth":"0.265m","Width":"0.46m","title":"4EU4321-0AW00-0A","Height":"0.435m","description":"COMMUTATING CHOKE FOR CONVERTER; PHASES:3; UN1(V):400; ITHMAX 1(A) / F1(HZ):1310 /50; I LN (A):1179; UK(%):4; LN(MH):0,018; TA/ISOKL:40 /H; IP00; TYPE OF TERMINALS:FLAT-TYPE TERMINAL; EN 61558-2-20 >CHOKE<","Peak Current":"1 638A","Phase Number":"3","Type Of Voltage":"AC","lifecycle_stage":"mature","Product Designation":"Kommut.-Drossel f. Stromrichter","protection class IP":"IP00","current at AC maximum":"1 310A","Inductivity Rated Value":"0.000018H","current at DC rated value":"1 605.3A","power loss [W] of the coil":"680W","Operating Voltage Rated Value":"400V","Ambient Temperature Rated Value":"40°C","Operating Frequency Rated Value":"50Hz","power loss [W] of the iron core":"325W","thermal class acc. to IEC 60085":"H","operational current at AC rated value":"1 179A","Type Of Electrical Connection For Main Current Circuit":"flat connector","Relative Inductive Drop In Voltage For Rated Value Of The Current, Voltage And Frequency":"4%"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/af109f1c1f5de3a0b70258124db38069.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=294938&mlfb=4EU4321-0AW00-0A"},"ai":{"faq":[{"question":"What is the physical size of 4EU4321-0AW00-0A?","answer":"Width 0.46 m, height 0.435 m, depth 0.265 m. Open-frame IP00 with flat-type terminals."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/4EU4321-0AW00-0A","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/4EU4321-0AW00-0A when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}