The CEE plug is a common plug connector for three-phase current. It is used to transmit three-phase alternating current
.phases offset by 120 degrees, the neutral conductor and the protective conductor. It is available for different current ratings of 16 A, 32 A, 63 A and 125 A, which is expressed in their designation: CEE16, CEE32, CEE63 and CEE125. The different versions differ in their diameters, which are 56 mm, 63 mm, 70 mm and 77 mm. As the performance of the CEE plugs changes, so does the diameter of the plug pins.