Abstract: A tripping device comprises a coil frame, a coil, a plunger, a spring, and an anti-shock device. The coil is fixedly coupled to the coil frame and has a cylindrical channel extending therethrough. The plunger is reciprocatingly received within the cylindrical channel and the spring is structured to bias the plunger within the cylindrical channel. The anti-shock device includes at least one of a number of anti-shock devices structured to eliminate movement of the coil relative to the coil frame and a number of anti-shock devices structured to eliminate movement of the plunger relative to the cylindrical channel. An under-voltage release mechanism comprises a mounting bracket, a tripping device, and an angled support. The mounting bracket includes a first portion and a second portion. The angled support is fixedly coupled to the mounting bracket between the first and second portions and is structured to prevent flexing of the mounting bracket.