Abstract: The basic construction of the sleeved insulating body (8), with integrated screw connector, comprises enclosing a metallic screw connector (5) in an adhering insulation jacket (8.1), by means of, for example, an injection molding process, said jacket, extending at both front faces into elastic collars (8.2) which take cable ends. Openings (6) are provided in the insulating jacket at the access points for clamping screws (5.2) for the electrical and mechanical connection of the cable with the connector which, after removal of the tear-off caps on the clamp screws, are sealed by means of stoppers (10) made from insulating material or by means of a tubular elastic gaiter (17), each with a field controller. The field controller (9) over the cable end may be integrated in the collar (8.2). The insulating capability of the sleeve is produced when the cable ends are introduced through the collars (8.