.The C&K AP4C500TWBE Pushbutton Industrial Switch is a 4-pole, momentary contact switch designed to provide reliable switching in harsh environments. With its sturdy construction, it offers superior performance and durability in a variety of applications, including elevators, vending machines, access control systems, security systems, and industrial machinery. Its 4-pole design makes it ideal for circuits that require independent switching of multiple circuits simultaneously. The switch is rated for UL, CSA, and TUV standards, and comes with a maximum rating of 3A at 250VAC. The casing of the switch is made of polychloroprene and features a large actuator button, which provides a tactile, audible response when pressed. It also has a high resistance to temperatures between -20 and +85°C, as well as vibration and shock resistance for added durability.