TCI KLR series three phase AC reactors are intended for use as input filters for adjustable speed DC drives and as input or output filters for AC‑PWM variable frequency drives. Drive performance is significantly improved, the drives input rectifier is protected from failure or damage, and drive harmonic demands are tamed with the addition of a K‑rated reactor. KLR reactors act as interface buffers between solid state power circuits and the line or the motor. All drives, in any application, will benefit when applied with KLR series reactors.