Plunger switch providing relief for an excess plunger load

A switch comprising a switch housing, a plunger located within the switch housing, one end of the plunger extending out of the housing, the plunger being capable of limited movement relative to the housing, an electrical contact being provided on the plunger, said electrical contact being adapted to engage an electrical contact associated with the housing at an outward limit of movement of the plunger relative to the housing, stop means being provided coaxially, and disengaged from the plunger when said plunger is at said outer limit of movement for engagement with the end of the plunger remote from said one end at a normal inward limit of movement of the plunger relative to the housing, said stop means being displaceable axially when a load in excess of a predetermined magnitude is applied thereto by the plunger, movement of the stop means permitting movement of the plunger beyond its normal inward limit of movement relative to the housing.