Fusetron FRS-R-60 is a type of fuse manufactured by the company Fusetron. It is a current-limiting fuse that is designed to provide overcurrent protection for electrical systems. The “R” in the model number indicates that it is a dual-element fuse, which means that it has both a time-delay element and a current-limiting element. The “60” in the model number indicates that it has an interrupting rating of 60 amps.