The MSM DP momentary switch is designed with two separate switching contacts. The contacts can be used as normally open, normally closed, or as change-over. The MSM DP is ideal for switching primary and secondary circuits, where an additional set of contacts is required for an auxiliary function. The MSM SPDT and DPDT have seal protection to the front of the actuator, as well as to the panel with a sealing o-ring. An IP 67 microswitch option has been added, which provides an integrated seal between the actuator and the microswitch, as well as around the switch terminals. The completely sealed switching unit can be used in adverse conditions when increased humidity, condensation or water seeps in through openings in the equipment housing.