Bussmann, GLR-1/2, In-Line Fuse, Fast Acting Low Voltage Small Dimension, Series: GLR, Non-Indicating, Non-Rejection, 0.5 A, 300 V AC, 10 kA Interrupt, Class: Supplemental, Wire Terminal, Panel/Holder Mounting, Cylindrical Body, Single Element, Glass, 0.72 in Dia x 2.25 in L Body