Protection against overload and short-circuit in electric line sand equipments (type gG), also available for protection of motors (type aM).Rated voltage up to 600V; Rated current up to 630A; Working frequency 50Hz AC; Rated breaking capacity up to 100kA.Compliant with GB13539 and IEC60269.Variable cross-section fuse element made from pure metal sealed in cartridge made from high temperature resistant epoxy glass. Fuse tube filled with chemically treated high-purity quartz sand as arc-extinguishing medium. Dot-welding of fuse element ends to the knife contacts ensures reliable electric connection.The models, dimensions, ratings are shown in Figures 2.1~2.2 and Tables 2.