Sprite icons

Variable fan speed controllers

Electronic fan speed controllers provide infinitely variable speed control for single-phase or three-phase voltage controllable motors. Typically they are used to control AC fans or pumps in HVAC applications. They use phase angle control - TRIAC technology - to adjust the motor voltage and to control the fan speed. Thanks to this technology, these fan speed controllers are completely silent. Depending on the motor type, some additional motor noise at low speed might occur.
Report an error
For security reasons, your session is about to expire due inactivity.
Due prolonged inactivity, your session was automatically closed for security reasons. Please log in again.
Stay logged in Log in