The Fusetron FRN-R-20 fuse is a fast-acting, Class RK5 fuse designed for protecting motors and other electrical equipment from overloads and short circuits. It has a voltage rating of 600V AC/DC and its current rating is 20 amps. It features a dual-element design, where one element melts quickly to open the circuit, while the other element melts at a slightly higher temperature to provide additional protection. The fuse also features a time-delay feature, which allows it to remain closed for a short period of time before opening to allow for the motor to start current.
