{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"4EP4003-5DK00","brand":"Siemens","brandSlug":"siemens","productSlug":"4EP4003-5DK00","canonicalUrl":"https://aoctrl.com/siemens/4EP4003-5DK00","factsUrl":"https://aoctrl.com/api/mcp/products/4EP4003-5DK00","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIDAC output reactor, 3-phase, 600 V, 16 A, 8 kHz switching frequency, 0.3 mH, IP00, screw/tab terminals.","salesMarkdown":"## What this output reactor does on your drive line The Siemens SIDAC 4EP4003-5DK00 is a 3-phase output reactor rated for 16 A continuous at a switching frequency of 8 kHz, with 0.3 mH inductance per phase. It sits between the VFD output and the motor cable to limit dv/dt and reflected-wave voltage spikes that can damage motor insulation on long cable runs. Thermal class B (130 °C rise) and an ambient rating of 40 °C mean it handles the heat load of continuous PWM duty without derating in a typical ventilated cabinet. ## Sizing and fit — what the ratings tell you At 16 A and 0.3 mH, this reactor is sized for a motor drive in the 7.5–11 kW range on a 400 V supply, depending on the drive's switching frequency and cable length. The 8 kHz switching frequency rating matches modern IGBT drives; running a higher carrier frequency reduces the effective inductance and increases core losses, so stay at or below 8 kHz. Total power loss sums to 130 W (80 W coil + 50 W iron core), which must be dissipated in the panel — allow free air circulation or forced ventilation around the IP00 enclosure. The reactor measures 0.21 m wide by 0.17 m tall by 0.14 m deep — roughly the footprint of a small contactor but taller. Connection is via screw-type or tab terminals on the main circuit, which accept standard ring or fork lugs for 16 A wiring. Mounting holes or a base plate are typical for bolting to the panel backplate — no DIN rail clip is provided.","metaTitle":"Siemens SIDAC 4EP4003-5DK00 Output Reactor, 16A, 8 kHz","metaDescription":"Siemens SIDAC 4EP4003-5DK00 3-phase output reactor, 16A, 8 kHz switching frequency, 0.3 mH. IP00, screw/tab terminals. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Line/Load Reactors"],"specifications":{"Depth":"0.14m","Width":"0.21m","Height":"0.17m","Maximum":"16A","Minimum":"600Hz","Rated Value":"8 000Hz","Phase number":"3","Type of voltage":"AC","lifecycle_stage":"mature","Product brand name":"SIDAC","Product designation":"output reactor","Protection class IP":"IP00","Inductivity rated value":"0.0003H","Power loss [W] of the coil":"80W","Ambient temperature rated value":"40°C","Power loss [W] of the iron core":"50W","Thermal class acc. to IEC 60085":"B","Type of electrical connection for main current circuit":"screw-type terminals / tab terminals"}},"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=459332&mlfb=4EP4003-5DK00","alternativesUrl":"https://aoctrl.com/api/mcp/products/4EP4003-5DK00/alternatives.json"},"ai":{"faq":[{"question":"What is 4EP4003-5DK00 used for?","answer":"It is a 3-phase output reactor (also called an output choke) installed between a variable-frequency drive and the motor to reduce voltage spikes and protect motor insulation, especially on long cable runs."},{"question":"What are the key electrical ratings of 4EP4003-5DK00?","answer":"16 A maximum continuous current, 8 kHz rated switching frequency, 0.3 mH inductance per phase, for 3-phase AC systems up to 600 V."},{"question":"Where can I buy 4EP4003-5DK00?","answer":"This part is sourced to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm commitment."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/4EP4003-5DK00","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/4EP4003-5DK00 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}}