The GRAYHILL part 39-351-BLK is a reliable and durable push button switch that is designed for momentary contact applications. With a round plunger and a single pole, single throw (SPST) configuration, this switch provides a normally open (N.O.) connection. It is capable of handling a current of up to 0.5A and a voltage of 220VAC. Featuring solder lug terminals, it can be easily and securely mounted on a panel. Ideal for various industrial and electronic applications, this switch offers a dependable solution for momentary control operations.