Variable speed drives (VSDs) are devices that regulate the rotation speed of an electric motor. These motors power pumps, fans, and other mechanical components of buildings, plants, and factories. There are a few types of variable speed drives, but the most common is the variable frequency drive (VFD). VFDs are widely used to control AC motors in most applications. The primary job of both VSDs and VFDs is to vary the frequency and voltage supplied to a motor. These varying frequencies in turn control a motor’s acceleration, change of speed, and deceleration. VSDs and VFDs can reduce power consumption when the motor is not needed, and therefore boost efficiency. Our VSDs, VFDs, and soft starters offer you a wide range of fully tested and ready-to-connect motor control solutions, up to 20 MW. From compact pre-engineered systems to custom-engineered complex solutions, our products are developed and manufactured to the highest quality level to meet your needs for industrial processes, machines, or building applications.