Variable Frequency Drives (VFD) for AC Motors

AC Variable Frequency Drives (also known as VFD, or Inverter) control the speed of an AC Induction motor by varying both the voltage and frequency to the motor. They only work with 3-phase motors, not single-phase motors.  However, there are VFDs that accept single-phase input and convert to 3-phase for the motor, such as the Weg CFW100 line. VFD drives coupled with AC motors are quickly replacing DC drives and DC motors as the preferred method of varying the speed of an electric motor due to the much lower cost and maintenance of the AC motors.

Shop by VFD Product Lines:


Weg CFW100

  • Single-Phase Input
  • 0.25 to 1 HP
  • Tiny form-factor
  • Home or Industrial
  • $150 - $185

WEG CFW300 VFD Drives

Weg CFW300

  • Single and 3-Phase
  • 0.25 to 5 HP
  • Home or Industrial
  • $175 to $450



Weg CFW500

  • Single and 3-Phase
  • 0.33 to 175 HP
  • Industrial Use
  • $250 - $8500



Weg CFW500
Washdown / IP66

  • Single and 3-Phase
  • 0.33 to 25 HP
  • Outdoor Use
  • NEMA 4X / IP66
  • $425 - $2500

Listings coming soon... contact us for quote!


Weg CFW11

Weg CFW11

  • Single and 3-Phase
  • 1.5 to 1000 HP
  • Large Industrial Use
  • starting at $1000

Listings coming soon.... contact us for quote!