Bolt Connected Fuse Links

protection against overload and short-circuit in electric lines ,a lsi available for protection of semiconductor parts and wquipment against short-circuit and protection of motors. rated voltage up to 1200V;rated current up to 630A, working freqency 50HZ AC, rated breaking capacity up to80Ka. complianty with GB13539 and IEC269. variable cross-section fuse element made from pure copper or silver sealed in cartridge made from high-duty ceramic or epoxy glass. fuse tube filled with chemically treated high- purity quartz sand as arc-extinguishing medium. dot-welding of fuse element ends to the terminals ensures reliable electric connection and forms insert knife type contacts. striker mat be attached to the fuse link to provide immediate activation of microswitch to give various signals or cut the circuit automatically.