This particular product is the Philmore Mfg. 30-219 SPST toggle switch, equipped with a standard-sized bat handle and designed for ON-OFF function. It has a current rating of 3A at 125V AC and 1A at 250V AC. The initial contact resistance is 5 Meg ohm (maximum), and the insulation resistance is 100 Meg ohm (minimum) at 500V DC. With a dielectric strength of 1000V AC 50/60 Hz for 1 minute, this switch features contact and terminal materials made of nickel-plated brass, and a Solder-type terminal. Its action is ON-OFF, with an actuator and a 0.50" mounting hole.