PNP Sealed Push-button Switches C&K Switches PNP Sealed Push-button Switches are IP68 sealed to endure harsh environments and offer a 1 million push life cycle. C&K PNP series can handle up to 5A of resistive load and is RoHS compliant. These switches feature longer solder leads for ease of wire installation and come in multiple housing styles. Wire-lead options are available. Applications include control grips, off-road panels, heavy equipment, industrial instruments, lifts, and conveyor controls.