The Danfoss VLT 3522 Three Phase Variable Frequency Drive is a three-phase HVAC drive that provides precise speed control for motor loads in building systems. This 20 HP unit operates on 500 V input and delivers an adjustable output frequency from 0.5 to 120 Hz to match motor speed with demand. Designed for HVAC installations, it supports accurate speed tuning to optimize ventilation and circulation applications.
