Thyristor speed controller
Step less phase cutting controller for 1~230V/50Hz motors. It has a potentiometer to set the speed and control lamps for operation and alarm. Internal potentiometer to set a min. speed. On/Off Switch with control lamp. Connection for on/off switch, alarm and thermal contacts. White plastic casing IP54. Several motors can be connected in parallel as long as the total current does not exceed the current range. Fans to be used with this controller must be designed for thyristor speed control.
NOTE: phase cutting controllers can generate electronic noise.