{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"4EP4003-0DS00","brand":"Siemens","brandSlug":"siemens","productSlug":"4EP4003-0DS00","canonicalUrl":"https://aoctrl.com/siemens/4EP4003-0DS00","factsUrl":"https://aoctrl.com/api/mcp/products/4EP4003-0DS00","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON series commutating choke for converters, 3-phase, 400V AC, 100A AC max, 0.22mH, IP00 open-frame, flat-type terminals.","salesMarkdown":"The Siemens 4EP4003-0DS00 is a 3-phase commutating choke (Kommut.-Drossel f. Stromrichter) rated for converter applications at 400V AC, 50Hz. It handles a maximum AC current of 100A and a DC rated current of 122.5A, with a peak current capability of 125A. The 100A AC maximum current and 90A AC rated operational current define the continuous load this choke can carry in a converter circuit without saturating the core. The 122.5A DC rated current tells you the DC-link side capability — useful when sizing for a rectifier output. The 4% voltage drop at rated current is the impedance penalty: expect a 16V drop at 400V line, which the converter's control loop must absorb. The IP00 open-frame construction means no enclosure protection — this choke mounts inside a cabinet or panel, not in a washdown or outdoor location. ## Thermal and loss budget Total power loss is 110W — 80W in the coil and 30W in the iron core — at the rated 40°C ambient. Thermal class B (130°C) per IEC 60085 means the insulation system can handle a 130°C hot-spot temperature, giving roughly 90°C rise over 40°C ambient. For panel thermal design, that 110W must be ventilated or the cabinet must be sized to keep internal ambient below 40°C. ## Physical integration Dimensions are 0.219m wide by 0.179m high by 0.143m deep. The main circuit connection uses flat-type terminals (flat connector), typical for busbar or cable-lug termination in a converter cabinet. No DIN-rail mounting — this is a bolt-down or chassis-mount component sized for the panel floor.","metaTitle":"Siemens 4EP4003-0DS00 Commutating Choke, 100A AC, 400V, 3-Ph","metaDescription":"Siemens 4EP4003-0DS00 commutating choke for converters. 100A AC max, 400V, 3-phase, 0.22mH, IP00. Active production. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Line/Load Reactors"],"specifications":{"Depth":"0.143m","Width":"0.219m","title":"4EP4003-0DS00","Height":"0.179m","description":"COMMUTATING CHOKE FOR CONVERTER; PHASES:3; UN1(V):400; ITHMAX 1(A) / F1(HZ):100 /50; I LN (A):90; UK(%):4; LN(MH):0,224; TA/ISOKL:40 /B; IP00; TYPE OF TERMINALS:FLAT-TYPE TERMINAL; EN 61558-2-20 >CHOKE<","Peak Current":"125A","Phase Number":"3","Type Of Voltage":"AC","lifecycle_stage":"mature","Product Designation":"Kommut.-Drossel f. Stromrichter","protection class IP":"IP00","current at AC maximum":"100A","Inductivity Rated Value":"0.00022H","current at DC rated value":"122.5A","power loss [W] of the coil":"80W","Operating Voltage Rated Value":"400V","Ambient Temperature Rated Value":"40°C","Operating Frequency Rated Value":"50Hz","power loss [W] of the iron core":"30W","thermal class acc. to IEC 60085":"B","operational current at AC rated value":"90A","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":"$1,107.44","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/dcaff7601286616df3e64bdc2157b315.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=69302&mlfb=4EP4003-0DS00"},"ai":{"faq":[{"question":"Where can I buy 4EP4003-0DS00 and how do I get a price?","answer":"This part is sourced to order against an RFQ through independent industrial-automation distribution. Submit an RFQ for current pricing and availability confirmation at quote time."},{"question":"What are the key electrical ratings for 4EP4003-0DS00?","answer":"The choke is rated for 3-phase, 400V AC, 50Hz operation. Maximum AC current is 100A, DC rated current is 122.5A, peak current is 125A, and inductance is 0.22mH with a 4% voltage drop at rated conditions."},{"question":"What is the physical size of 4EP4003-0DS00?","answer":"The dimensions are 0.219m width, 0.179m height, and 0.143m depth. It uses flat-type terminals for the main circuit connection and has an IP00 protection rating."},{"question":"What compliance documentation does Siemens provide for 4EP4003-0DS00?","answer":"The choke is designed to EN 61558-2-20 (safety of transformers, reactors, and power supply units). Thermal class B per IEC 60085. For RoHS, REACH, and UL documentation, request the manufacturer's declaration with your RFQ — these are typically available on request for active Siemens components."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/4EP4003-0DS00","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/4EP4003-0DS00 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}}