Abstract: In an electric switch of the kind which comprises in a body a connection means rigidly fastened to a pushbutton and mounted for axial movement for electrical connection to two terminals, and a catch pin mounted for movement transversely in the body for co-operation with a heart cam rigidly fastened to the connection means, the catch pin passes entirely through the wall of the body and from the outside of the body is subjected to the action of resilient means which permanently urge the catch pin into contact with the heart cam.