LittelfuseĀ® POWR-GARDĀ® Cartridge Fuse, Fast Acting, Series: 312, Indicating/Non-Indicating: Non-Indicating, 4 A, 250 VAC, 10 kA Interrupt, 5 sec at 200% Response, Ferrule Terminal, Holder Mount, Cylindrical Body, 1 Element, Glass, 1/4 in Dia x 1-1/4 in L Body Size