The 220V Variable Frequency Drive VFD Speed Controller is designed for controlling the speed of 3-phase AC motors up to 4kW. This VFD uses PWM control to adjust the output voltage and can handle a maximum output frequency range of 0 – 400Hz. With a rated current of 20A and a rated voltage of AC220V (single phase), this model (AT1-04K0X) is suitable for a variety of industrial automation and motion control applications, providing precise control over motor speed in a reliable and efficient manner.