{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"4EP3804-0ES00","brand":"Siemens","brandSlug":"siemens","productSlug":"4EP3804-0ES00","canonicalUrl":"https://aoctrl.com/siemens/4EP3804-0ES00","factsUrl":"https://aoctrl.com/api/mcp/products/4EP3804-0ES00","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 4EP3804-0ES00, commutating choke for converter, 3-phase, 400V AC, 34A AC rated, 0.82mH, IP00, screw terminals.","salesMarkdown":"The Siemens 4EP3804-0ES00 is a 3-phase commutating choke for converter applications, rated at 400V AC and 34A AC with an inductance of 0.82 mH. It's built for line-side or DC-link duty in variable-speed drives and rectifier front-ends, where it limits di/dt and smooths commutation notches. The 34A AC rated current and 41.6A DC rated current tell you this choke handles the continuous RMS current of a 34A AC drive input or a 41.6A DC bus. The 3.8% relative inductive voltage drop at rated current, voltage, and frequency means the choke will drop about 15.2V at 400V line — enough to soften current spikes without starving the DC bus of voltage. Thermal class B insulation allows a 130°C hot-spot limit, and the 46.9W coil loss plus 17W iron loss add up to roughly 64W total heat to vent inside the panel at 50°C ambient. ## Integration notes Mounting dimensions: 0.178m wide, 0.153m tall, 0.12m deep. Screw-type terminals accept standard lug or ring-tongue terminations — no spring-cage here. The 50Hz operating frequency is fixed; if your drive runs 60Hz, the choke still works but the voltage drop percentage shifts slightly. Plan for the 64W heat dissipation inside the enclosure — don't bury it next to a heatsink without airflow.","metaTitle":"Siemens 4EP3804-0ES00 Commutating Choke, 34A AC, 400V, 0.82m","metaDescription":"Siemens 4EP3804-0ES00 commutating choke for converters. 3-phase, 400V AC, 34A AC rated, 0.82mH, IP00, screw terminals. Mature lifecycle. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Line/Load Reactors"],"specifications":{"Depth":"0.12m","Width":"0.178m","Height":"0.153m","Phase Number":"3","Type Of Voltage":"AC","lifecycle_stage":"mature","Product Designation":"Kommut.-Drossel f. Stromrichter","protection class IP":"IP00","current at AC maximum":"34A","Inductivity Rated Value":"0.00082H","current at DC rated value":"41.6A","power loss [W] of the coil":"46.9W","Operating Voltage Rated Value":"400V","Ambient Temperature Rated Value":"50°C","Operating Frequency Rated Value":"50Hz","power loss [W] of the iron core":"17W","thermal class acc. to IEC 60085":"B","operational current at AC rated value":"34A","Type Of Electrical Connection For Main Current Circuit":"screw-type terminals","Relative Inductive Drop In Voltage For Rated Value Of The Current, Voltage And Frequency":"3.8%"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/12b119ef59dab87c766cb043255a46bf.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=4942&mlfb=4EP3804-0ES00","alternativesUrl":"https://aoctrl.com/api/mcp/products/4EP3804-0ES00/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 4EP3804-0ES00?","answer":"We source this part to order against an RFQ through independent distribution channels. Availability and current pricing are confirmed at quote time."},{"question":"What is the closest functional second-source for 4EP3804-0ES00?","answer":"There is no direct functional second-source among the peer MPNs listed (5SJ3140-7, 5SQ2270-2YA04, 5SQ2370-2YA05) — those are miniature circuit breakers, not commutating chokes. The 4EP3804-0ES00 is a line reactor; swapping in a breaker would not provide the inductance needed."},{"question":"Will 4EP3804-0ES00 drop into a panel specified around 5SJ3140-7?","answer":"No — the 5SJ3140-7 is a 1-pole 40A MCB with IP20 and a 70mm installation depth. The 4EP3804-0ES00 is a 3-phase choke with completely different mounting and wiring. You would need to re-engineer the panel layout."},{"question":"What compliance documentation does Siemens provide for 4EP3804-0ES00?","answer":"The part is designed per EN 61558-20 for chokes. Standard Siemens documentation includes the declaration of conformity and RoHS/REACH statements available on request."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/4EP3804-0ES00","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/4EP3804-0ES00 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}}