LittelfuseĀ® POWR-GARDĀ® Supplemental Midget Fuse, Fast Acting, Series: BLS, Indicating/Non-Indicating: Non-Indicating, 4 A, 600 VAC, 10 kA Interrupt, Class: Midget, 12 sec Response, Ferrule Terminal, Clip Mount, Cylindrical Body, 13/32 in Dia x 1-3/8 in L Body Size