{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"4EP3805-3CK00","brand":"Siemens","brandSlug":"siemens","productSlug":"4EP3805-3CK00","canonicalUrl":"https://aoctrl.com/siemens/4EP3805-3CK00","factsUrl":"https://aoctrl.com/api/mcp/products/4EP3805-3CK00","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIDAC output reactor, 3-phase AC, 14A max, 0.3mH, 8kHz switching frequency, IP00, screw terminals.","salesMarkdown":"The 0.3mH inductance limits the rate of current rise from the drive's PWM output, which reduces motor cable reflections and bearing currents on long cable runs. The 8kHz switching frequency matches the typical IGBT carrier frequency of modern VFDs — if your drive runs at a different carrier, the reactor still works but derates the current; the 14A figure is the thermal limit at the rated 8kHz and 55°C ambient. The screw-type terminals accept field wiring directly; no lugs or ring terminals are required, but the connection point is live when the panel is energized. Thermal class B insulation (130°C hot-spot) per IEC 60085, with combined copper and iron losses of 62W at rated load. That heat has to be managed inside the enclosure — plan for natural convection or forced airflow around the reactor. Mounts in the motor cable path between the VFD output and the motor terminals. The 0.12m depth, 0.17m width, and 0.15m height footprint fits a standard DIN-rail backplate or panel floor; the screw terminals accept conductors sized for the 14A circuit. Because it's IP00, it must be inside a panel with at least IP2X protection on the enclosure door. The 167Hz minimum operating frequency means it's designed for PWM carrier frequencies, not line-frequency (50/60 Hz) chokes. It will saturate at line frequency — don't use it as a line reactor.","metaTitle":"Siemens SIDAC 4EP3805-3CK00 Output Reactor, 14A, 3-Phase, IP","metaDescription":"Siemens SIDAC 4EP3805-3CK00 output reactor, 3-phase AC, 14A max, 0.3mH, 8kHz switching frequency, IP00, screw 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":"0.12m","Width":"0.17m","Height":"0.15m","Maximum":"14A","Minimum":"167Hz","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":"38.2W","Ambient temperature rated value":"55°C","Power loss [W] of the iron core":"23.8W","Thermal class acc. to IEC 60085":"B","Type of electrical connection for main current circuit":"screw-type 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=339540&mlfb=4EP3805-3CK00","alternativesUrl":"https://aoctrl.com/api/mcp/products/4EP3805-3CK00/alternatives.json"},"ai":{"faq":[{"question":"What is the 4EP3805-3CK00 used for?","answer":"It's a 3-phase output reactor (output choke) placed between a VFD and motor to limit dv/dt and reduce cable reflections on long motor leads. Rated for 14A continuous at 8kHz switching frequency."},{"question":"Where can I buy 4EP3805-3CK00?","answer":"Sourced to order against an RFQ through independent distribution. Submit a request for quote to confirm current pricing and availability."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/4EP3805-3CK00","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/4EP3805-3CK00 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}}