What it is and what it does
The SIDAC 4EP3900-6MS00 is a 3-phase filter reactor — a line reactor — rated for 400 V AC at 50 Hz. It carries a continuous rated current of 14.5 A (max 16.1 A) and delivers 10 kvar of reactive power. The 7 % relative throttling factor means it introduces 7 % impedance at rated current, which is the standard value for most variable-frequency-drive input and output applications: it limits harmonic distortion, smooths current spikes, and protects the drive's DC bus capacitors from line notching.
Mounting and integration
IP00 means no enclosure — an open-core assembly for panel mounting. Dimensions: 0.219 m wide, 0.179 m tall, 0.123 m deep. Connections are screw-type or tab terminals.
Thermal and electrical limits
Rated for 40 °C ambient, thermal class B insulation. Power loss at rated load is 73 W. Resonant frequency is 189 Hz.