Phoenix Contact 1621326 A PRC test plug is available in a standard configuration that includes a black finish and has undergone 2000 plug cycles. It features three positions, with copper wires of varying cross-sectional areas (1.5 mm2 to 6 mm2), and can be manually released. The plug operates at a high voltage of 690 V and supports a maximum current of 35 A, secured via a screw connection suitable for cables with an outside diameter of 8-21 mm in size.