Abstract: A switch mounting device with a base having a pair of spaced parallel rails and a receiving member at one end of the rails which extends from the base a distance at least as great as the height of the switch side walls. Each of the rails includes a projecting guide which extends from the base a distance at least as great as the height of the switch side walls. The receiving member and projecting guides each have a lug formed thereon for engaging the upper surface of the switch when it is in place. The base is formed with first and second resilient cantilevered members, the first of which has a free end extending away from a receiving member and terminating in a lug which engages the side wall of the switch opposite the receiving member when the switch is in place. The second cantilevered member has a free end proximate the receiving member which bears against the lower surface of the switch to urge the switch toward the lugs.