Abstract: A connection (V) of an electrical aluminum cable (1) with a connection piece (4) of another metal, especially of copper or a copper alloy, is brought about by crimping the wires (2) forming the aluminum cable (1) together in an end region and by welding to the connection piece (4), especially by a friction welding process. Moreover, the frictional heat between the materials is used to melt the two materials and to join them with each other without additional welding material. The aluminum cable (1) is provided for this purpose with a support sleeve (13) crimped upon it, which practically forms the individual wires (2) at the connection point into a solid surface, which is itself welded to the connection piece (4). Consequently, connection pieces of copper can be connected tightly and with good electrical conductance, without the danger of corrosion existing in the area of the connection due to various electropositive and electronegative metals.

Abstract: An electrical cable for supplying power from a power source to a consumer unit has at least one interruption region in which a component for interrupting the current flow is arranged. The component is a controllable semiconductor element in particular a semiconductor chip, whose contact surfaces effective for the current flow, are in direct contact through pressure action, with the faces of the connection sections of the cable in the interruption region, such that as little dissipation heat as possible arises.

Abstract: In a battery cable clamp for vehicles with a mounting device for a cable end, in which two clamp parts (2,4) are connected together in an electrically conducting fashion by a pressed connection that can be broken with a high separating force by an auxiliary drive, the pressed connection is composed of a conical contact surface. An explosive capsule (3) may be used to provide the separating forces. A plastic sleeve (18,18′) may be used to control travel of the expelled clamp part and to prevent accidental reengagement. The explosive capsule may be part of the battery clamp (8) or part of the battery lead (5).