The Yaskawa HV60U4027CFA is a 20 HP variable frequency drive (VFD) designed for commercial HVAC applications, operating on a 480V, three-phase power supply with a 27A rated output current. It regulates motor speed by adjusting the frequency and voltage supplied to the motor, making it suitable for air handling unit fans, chilled-water pumps, condenser-water pumps, and cooling tower fans. https://www.partshnc.com/hv60u4027cfa-yaskawa-20hp-variable-frequency-drive-480v-3ph