Abstract: A rapid assembly electrical plug includes a main body which bounds a receiving channel for the end portion of an electrical cord and partially bounds an input opening, and a lid which is mounted on the main body for movement between its open and closed positions transversely with respect to the receiving channel and completes the bounding of the input opening in its closed position. Electrical contact prongs are mounted in the main body of the plug housing and include respective side penetrating portions which penetrate into the cord substantially transversely thereof at the region of merger of the input opening with the receiving channel, and end penetrating portions which penetrate into the electrical conductors of the cord substantially in the longitudinal direction of the cord and from the free end of the latter at the bottom of the receiving channel.