Explosion-proof, cam-operated multiple switch assembly - has plunger-operated switches in encapsulation chambers around central shaft supporting operating cams

摘要

The switch assembly comprises pressure resistant compartments stacked above the click stop mechanism. The cam units are located around a central shaft with an external key drive. Each compartment is solid matter with switch chambers 180 deg. horizontally opposed to each other and has an operating plunger going through a hole from the switch chamber to the central cams. Filler may be used to reduce the volume of the switch chambers and a rear access aperture to the switch chambers is plugged after use for inserting a plunger during construction.