Plug-in connection system for mains installation cables uses complementary 2-pin plugs and sockets and compatible 3-pin plugs and sockets at ends of respective cable sections

摘要

The connection system uses 2-pin plugs (18) and sockets (14) fitted to the opposite ends of the cable sections, which have complementary interfitting contours and 3-pin plugs (46) and sockets (44) with series contacts, provided with complementary interfitting contours, ensuring the correct alignment between the corresponding contacts. The 3-pin plug and socket contours are matched to the 2- pin plug and socket contours, so that the 2-pin plugs are compatible with the 3-pin sockets, but the 3-pin plugs are not compatible with the 2-pin sockets.