For associated SDK 502 connectors see: < 753-1674') 753-1674/ , < 753-1677') 753-1677/, < 753-1671') 753-1671/, < 753-1665') 753-1665/ , < 753-1661') 753-1661/. Electrical Test Terminal Post POL 201 Series for 4mm Plug, 200A. Schutzinger 200A terminal post panel mount connectors with 4mm diameter test socket. The POL 201 series terminal post panel mount connectors are available in a range of colours, feature a single pole and are utilised for the transmission and testing of voltages and currents , part of the Shutzinger Ø 4mm Programme range. Detachable toggle head Polycarbonate insulation Panel thickness 9mm max.