E-Switch's PB300 is a momentary pushbutton switch that is PCB-mounted and has a long travel of 2 mm. The user can choose between a single-pole, single-throw switch, or a single-pole, double-throw, double-action switch. Its key feature is the double-action of the double-throw switch; the user presses the switch mid-travel and it actuates then continues pressing it for another actuation at full travel. The actuation force of the first position is 600 g and the actuation of the next position is 1150 g. This pushbutton switch also offers a smooth tactile response.

These features allow the PB300 to be used across a wide variety of applications and operating conditions.