Bussmann Fusetron™ Time Delay Fuse, Current Limiting, Series: FRS-R, Non-Indicating, Rejection, 40 A, 600 VAC/250 VDC, 200/20 kA Interrupt, Class: RK5, 10 sec Response, Ferrule Terminal, Holder Mount, Cylindrical Body, Dual Element, Fiberglass, 1.06 in Dia x 5.5 in L Body Size