The Nu-Calgon 5010-30 Nustart Soft Starter is an HVAC electrical component designed to reduce the high inrush current generated when compressor motors start. It gradually increases the voltage supplied to the motor, helping ensure smoother startup and reducing electrical and mechanical stress on system components. This soft starter is suitable for compatible air conditioning systems a... https://www.partshnc.com/nu-calgon-5010-30-nustart-soft-starter-230vac-3ph-4-28-rla