Keylock Switches are an electromechanical device used to start or stop current flow along a circuit. Devices in this family use a key as an actuator. This actuator will turn along the center axis point but have a predetermined number of stopping positions (2 to 12). The key may or may not be removable at any number of these positions. The voltage rating is 12V to 500V and the current rating is 100mA to 20A.