The Siemens SIDAC 4EP4001-6MS00 is a 3-phase filter reactor rated for 10.4 A continuous (11.5 A maximum) at 400 V AC, 50 Hz. It provides 0.011 H inductance with a 14 % relative throttling factor, meaning it limits harmonic currents and reduces voltage distortion on the line side of a variable-frequency drive or similar nonlinear load. The 7 500 var reactive power rating gives a quick measure of the filter bank's compensation capability. The reactor is wound to thermal class B per IEC 60085, so its insulation system is rated for a 130 °C continuous hot-spot temperature. With a resonant frequency of 134 Hz, it is tuned to suppress the 5th harmonic (250 Hz) and higher-order harmonics common in 6-pulse rectifier drives.
The 4EP4001-6MS00 measures 0.219 m wide by 0.179 m tall by 0.143 m deep. Protection class IP00 means it is an open-frame component — no enclosure, no touch protection. The main circuit connects via screw-type terminals, sized for the rated current. That heat must be dissipated within the enclosure; factor it into the panel's thermal budget. The reactor is designed for a 40 °C ambient, so derate or provide forced ventilation if the cabinet internal temperature exceeds that.