What it is and what it does
The 4EP3806-0DS00 is a SIDAC-branded output reactor, also called an output choke, for a 3-phase AC motor drive. It sits between the drive output and the motor cable to smooth voltage spikes and limit the rate of voltage rise (dV/dt) that can damage motor insulation, especially on long cable runs. Rated for 26 A continuous at 1000 Hz fundamental and built for an 8 kHz switching frequency, it handles the pulse-width-modulated output from a modern variable-frequency drive without saturating.
Key ratings: what they mean for your drive line
The 26 A maximum current tells you this reactor is sized for a drive rated around 7.5 to 11 kW on 400 VAC — the exact match depends on your drive's continuous output current. The 8 kHz switching frequency matches most modern IGBT-based drives; if your drive runs a higher carrier frequency, you'll need a reactor rated for that. Inductance is 0.1 mH, which is typical for output reactors in this current class — enough to limit dV/dt without dropping too much voltage across the reactor at full load. The reactor dissipates 18 W in the coil and 9.2 W in the iron core at rated load. Mount where airflow carries heat away, especially at 40°C ambient.
Integration notes
Mounting dimensions are 0.17 m wide, 0.15 m tall, and 0.12 m deep. Connections are screw-type terminals.