A slide switch works by sliding a slight lever or actuator from side to side, opening and closing an electrical circuit. The actuator has a set of contacts moving inside the switch, which come together to complete a circuit or move apart to break the connection.

SPTD Switch

The pin in the middle is fixed. When the handle is pushed to the left, the two pins on the left are connected, and when it is pushed to the right, the two pins on the right are connected, thus switching the circuit.

Applications of Slide Switches
Consumer Electronics: Think remote controls, toys, and small gadgets.
Industrial Equipment: Often used in machinery for mode selection or emergency stops.
Automotive: Used in dashboard controls and other vehicle systems.
Home Appliances: These are common in items like coffee makers, fans, and heaters.

How to Select the Right Slide Switch?

Step 1 Slide Switch Function: First, know exactly what you want the slide switch to accomplish. Do you use it for device on and off, mode selection, or something else?
Step 2 Electrical Specifications: Ensure the slide switch rating is suitable for handling the current and voltage requirements of the application.
Step 3 Environment: Will it be used in a dusty, wet, or harsh environment? If so, look for protection-rated switches, such as IP-rated ones.
Step 4 Mounting Method: Determine how you'll mount the switch, whether it's through-hole, surface mount, or panel mount.
Step 5 Termination Style: Selection of termination style used to connect the device to a system, such as PC pins, screw terminals, or wire leads.