A snap action switch comprises stamped and formed stationary electrical contact members and a spring blade contact member. The stationary contact members and the spring blade contact member are secured in respective dielectric housing sections that are secured together forming a housing member with the planar free end of the spring blade contact member in electrical contact with one of the stationary contact members while the other end of the spring blade contact member is secured in its housing section. The other end of the spring blade contact member and the stationary contact members extend exteriorly of the housing member and are in the form of post sections for insertion into holes of a printed circuit board. The spring blade member has an arcuate compression member which, when the spring blade member is unstressed, extends out of the plane of the blade member and tension members on each side of the compression member which are located substantially in the plane of the blade member. An actuating member has engaging sections directly engaging the tension members and an actuating section extending through a hole in one of the housing sections which, when engaged by an operating force, moves the tension members to further stress the spring blade member and move the free end thereof out of contact with the one stationary contact member and into electrical contact with other stationary contact member with a snap action.