{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"4EP3800-4US00","brand":"Siemens","brandSlug":"siemens","productSlug":"4EP3800-4US00","canonicalUrl":"https://aoctrl.com/siemens/4EP3800-4US00","factsUrl":"https://aoctrl.com/api/mcp/products/4EP3800-4US00","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIDAC output reactor, 3-phase, 10.2A max AC, 1.2mH, IP00, screw/tab terminals, 40°C ambient, thermal class B.","salesMarkdown":"The Siemens SIDAC 4EP3800-4US00 is a 3-phase output reactor rated 10.2 A maximum AC at 120 Hz, with a rated inductance of 0.0012 H (1.2 mH). It's built for 460 V AC line voltage and carries a 40 °C ambient temperature rating with thermal class B insulation per IEC 60085. The 10.2 A maximum AC current at 120 Hz is the thermal limit (Ith max) — the reactor can carry that continuously without exceeding the temperature rise allowed by thermal class B. The 3 000 Hz rated switching frequency tells you this reactor is designed for PWM inverter outputs — it's meant to sit between a VFD and the motor to limit dv/dt and reduce bearing currents. Power loss splits into 49.6 W in the coil (copper losses) and 29.4 W in the iron core (hysteresis and eddy current losses), totaling roughly 79 W at full load. That heat has to be dissipated inside the panel — account for it in your thermal budget. The screw-type and tab terminals accept standard ring lugs or fork terminals for the main circuit wiring. No special tooling needed, but the tab option is useful for bus-bar connections in high-density cabinets. ## Where this class of part is used Output reactors (also called motor chokes or load reactors) are installed on the output of variable-frequency drives to protect the motor windings from voltage spikes caused by long cable runs or fast-switching IGBTs. They also reduce common-mode currents that can trip upstream RCDs. This 3-phase unit is sized for small to mid-range drives — think conveyor motors, pump drives, fan applications in the 3–7 kW range depending on the drive's output current. Compliance documentation (RoHS, REACH) is standard for Siemens industrial components — available on request with the RFQ.","metaTitle":"Siemens 4EP3800-4US00 SIDAC Output Reactor, 3-Phase, 10.2A","metaDescription":"Siemens SIDAC 4EP3800-4US00 3-phase output reactor, 10.2A max, 1.2mH, IP00, screw/tab terminals, 40°C ambient, thermal class B. Mature lifecycle, UL/CSA recognized.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Line/Load Reactors"],"specifications":{"Depth":"0.12m","Width":"0.17m","Height":"0.15m","Maximum":"120Hz","Minimum":"0Hz","Rated Value":"3 000Hz","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":"10.2A","Inductivity Rated Value":"0.0012H","power loss [W] of the coil":"49.6W","Ambient Temperature Rated Value":"40°C","power loss [W] of the iron core":"29.4W","thermal class acc. to IEC 60085":"B","operational current at AC rated value":"9.2A","Type Of Electrical Connection For Main Current Circuit":"screw-type terminals / tab terminals"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/505643f26f933715ab9bbe4b2df2d553.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=280673&mlfb=4EP3800-4US00","alternativesUrl":"https://aoctrl.com/api/mcp/products/4EP3800-4US00/alternatives.json"},"ai":{"faq":[{"question":"What is the 4EP3800-4US00 used for?","answer":"It's a 3-phase output reactor (motor choke) installed between a VFD and an AC motor to limit dv/dt, reduce voltage spikes on long cable runs, and suppress common-mode currents. Typical applications include conveyor, pump, and fan drives in the 3–7 kW range."},{"question":"What are the key specifications of 4EP3800-4US00?","answer":"3-phase AC, 460 V line voltage, 10.2 A max current (Ith), 9.2 A rated operational current, 1.2 mH inductance, 3 kHz switching frequency, IP00 open frame, screw/tab terminals, 40 °C ambient, thermal class B, 79 W total power loss."},{"question":"Where can I buy 4EP3800-4US00?","answer":"Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — send an RFQ for this order code."},{"question":"Does 4EP3800-4US00 have UL/CSA approval?","answer":"Yes, it is UL/CSA recognized per EN 61558-2-20, which covers safety requirements for chokes and reactors. Standard compliance documentation is available on request."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/4EP3800-4US00","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/4EP3800-4US00 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}}