Abstract: An overload protection device includes a cup-shaped cap member defining a cavity receiving a cup-shaped yoke member defining a pressurized air chamber receiving a piston having a rounded end surface engaging the cap member. An annular cam member is inserted into the cap member and defines three angularly spaced V-shaped cam surfaces with center seats which receive corresponding steel balls mounted on outwardly projecting ears of the yoke member. A rigid plastic ring is mounted on the yoke member with epoxy and contacts an annular shoulder within the cam member. The yoke member carries a pair of axially adjustable and normally closed electrical contact elements which are opened by an actuator pin projecting from the piston in response to tilting and/or rotation and/or axial movement between the yoke member and cap member.