BOJACK 20 Pcs High Quality Fast-Blow Glass Fuse Fuse <br> <br> Dimension:5x20 mm/0.2x0.78 Inch <br> Fuse Current: 8A <br> Fuse Voltage: 125V <br> <br> The role of the fuse：When a circuit malfunctions or is abnormal, the <br> current is constantly rising, and the increased current may damage <br> some important components or valuable components in the circuit, <br> or it may burn the circuit or even cause a fire.The fuse will cut off the <br> current when the current abnormally rises to a certain height and a <br> certain time, thereby protecting the safe operation of the circuit.