Manufactured from copper alloy ensures high conductivity|Spring is heat treated and plated prevents hydrogen embrittlement|Permanently installed steel spring ensures tighter grip and positive contact with either knife or ferrule type fuses|250 to 600 VAC voltage rating|100 A current rating|Supplied with a slot or a hole for a steel rejection device prevents the insertion of any other type fuse except class R|Electro-tin plated provides low contact resistance