The switch has three terminals: one for the incoming power, one for the low speed of the motor, and one for the high speed of the motor. When the switch is in the “off” position, the power to the motor is turned off. When the switch is in the “low” position, the power is routed to the low speed terminal of the motor.
Two-speed fan/blower motor switches are available in a variety of styles, including rocker switches, push-button switches, and rotary switches. The type of switch that is used depends on the specific application.
Here are some examples of appliances that commonly use two-speed fan/blower motor switches:
- HVAC systems
- Ceiling fans
- Bathroom fans
- Kitchen exhaust fans
- Whole house fans
- Industrial fans
- Blower motors for furnaces and air conditioners