Specification highness/width/thinkness :53*42.5*12.2mm the screw diameter :M4mm twist:1.5-1.8Nm stripped length:11mm Material:PA66 Colour:grey current:101A voltage:400V OEM manufaturer PS: UK series combined terminal block is designed into the frame type screw connecting structure,in conformity with the standard such as EN6047-1, GB14048.7, GB14048.8 and JB/T9659.1.May be installed on style U,style G guide rail.