{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"4EP3900-3US00","brand":"Siemens","brandSlug":"siemens","productSlug":"4EP3900-3US00","canonicalUrl":"https://aoctrl.com/siemens/4EP3900-3US00","factsUrl":"https://aoctrl.com/api/mcp/products/4EP3900-3US00","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIDAC output reactor, 3-phase, 460 V AC, 17.5 A max, 3 kHz switching frequency, IP00, screw/tab terminals.","salesMarkdown":"The Siemens SIDAC 4EP3900-3US00 is a 3-phase output reactor rated for 460 V AC, carrying a maximum continuous current of 17.5 A (120 Hz output) and a rated operational current of 15.8 A at 3 kHz switching frequency. Inductance is 0.48 mH with a voltage drop (UK) of 2.4%. This is the choke that sits between a variable-frequency drive and the motor cable — it limits the dv/dt stress on the motor windings and reduces bearing currents on long cable runs. The IP00 open-frame construction means it mounts inside a panel or enclosure; screw-type and tab terminals keep wiring straightforward without special crimp tooling. ## Thermal class and power loss Rated for 40 °C ambient and insulation class B per IEC 60085 (130 °C hot-spot). At full load the coil dissipates 60 W and the iron core another 33.8 W — total 93.8 W of heat that must be vented from the enclosure. That much loss in a sealed box will raise internal temperature noticeably; plan for forced airflow or derate if ambient runs above 40 °C. Designed to EN 61558-2-20 (safety of transformers, reactors, and power supply units) and recognized under UL/CSA. That UL/CSA mark is the key gate for panel builders shipping into North American sites — it avoids a separate component-level evaluation.","metaTitle":"Siemens SIDAC 4EP3900-3US00 output reactor, 460 V, 17.5 A","metaDescription":"Siemens SIDAC 4EP3900-3US00 3-phase output reactor, 460 V AC, 17.5 A max, 3 kHz switching frequency. UL/CSA recognized. Mature lifecycle. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Line/Load Reactors"],"specifications":{"Depth":"0.12m","Width":"0.21m","title":"4EP3900-3US00","Height":"0.17m","Maximum":"120Hz","Minimum":"0Hz","Rated Value":"3 000Hz","description":"OUTPUT CHOKE; PHASES:3; UN1(V):460; ITHMAX 1(A) / F1(HZ):17,5 /120; F TAKT(KHZ):3; I LN (A):15,8; LN(MH):0,483; UK(%):2,4; TA/ISOKL:40 /B; IP00; TYPE OF TERMINALS:SCREW/TAB CONNECTION; EN 61558-2-20 >UL/CSA-RECOGNIZED<","Phase Number":"3","Type Of Voltage":"AC","lifecycle_stage":"mature","Product Brand Name":"SIDAC","Product Designation":"output reactor","protection class IP":"IP00","current at AC maximum":"17.5A","Inductivity Rated Value":"0.00048H","power loss [W] of the coil":"60W","Ambient Temperature Rated Value":"40°C","power loss [W] of the iron core":"33.8W","thermal class acc. to IEC 60085":"B","operational current at AC rated value":"15.8A","Type Of Electrical Connection For Main Current Circuit":"screw-type terminals / tab terminals"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/cd97359487cdf96b399f9b94d9222461.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=115640&mlfb=4EP3900-3US00"},"ai":{"faq":[{"question":"Where can I buy the 4EP3900-3US00 output reactor?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — send an RFQ for the real ETA."},{"question":"What compliance documentation does this reactor carry?","answer":"It is designed to EN 61558-2-20 and carries UL/CSA recognition, which satisfies North American panel shop requirements for a component-level safety mark."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/4EP3900-3US00","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/4EP3900-3US00 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}}