Circular threaded coupling connector The shells are made of aluminium alloy and the insulator is neoprene rubber, contacts are made of copper alloy and are silver plated The shells are cadmium plated with olive drab chromate finish The current rating is upto 150 amps depending upon shell size and contact arrangement. Insulation resistance is 5000 mega ohms minimum Material can be packed according to the ordered size in standard packs.
