Female socket 4pin (3+PE) 16A 400V Type of circular connector Socket connector Type of female connector Connector series WA22 Number of pins 4 Connector pinout 3+PE Tightness class IP67 Rated current 16A Electrical installation screw terminal Mechanical installation flange (2 holes), panel mounted Rated voltage 400V Locking system internal thread, screwed Contact plating gold-plated