Mainly used for ships AC/DC low voltage electrical wiring.connected and cutting on ot off circuit.The single pole of plug pulled out should be not less than 4N.The temperature rise of conductive part should don not exceed 40K.The surface of shell should hanve reliable earthing device.The screw of cover Plate is M6 locking srew.10A products approved by CE(European Conformity) and CCS (China Classification Society).The base of Plug and socket conform to DIN89320 standard.The base of Plug and socket conform to DIN89322 standard.