SER-1-75L22

5-step fan speed controller with smoke evacuation function. It controls single-phase motors. The (combined) maximum motor current is 7,5 A. The required AC fan speed can be selected via the rotary switch. This rotary switch has an OFF position and 5 speed selections. By pressing the emergency switch, the motor will immediately accelerate towards full speed. The output voltage with perfect sinusoidal shape, guarantees quiet motor operation. The enclosure offers an IP54 protection against ingress of dirt, dust and moisture. It can be wall mounted in indoor environments.