A protective cap (4, 4′) for an electrical high-current plug connector (1) is substantially box-shaped and has at least one open side (5). The protective cap (4) has a gripping element (8) for fixing the protective cap (4, 4′) to a connection region (3, 3′, 3″) of the high-current plug connector (1), which is provided for connecting an electrical conductor. The gripping element (8) extends into the open side (5). The gripping element (8) has a pincer-like design with two arms (8a, 8b) which cross over each other or two arms (8a, 8b) oriented relative to each other in an S-shape. Each of the two arms (8a, 8b) is integrally formed on the protective cap (4, 4′) in a lower region and grips around the connection region (3, 3′, 3″) for a conductor to be connected in an upper region.