BOJACK 20 Pcs High Quality Fast-blow Glass Fuse<br><br> Fuse Dimension:5x20mm <br><br> Fuse Current: 8A<br><br> Fuse Voltage: 250V<br><br> The role of the fuse：When a circuit malfunctions or is abnormal, the current is constantly rising, and the increased current may damage some important components or valuable components in the circuit, or it may burn the circuit or even cause a fire.The fuse will cut off the current when the current abnormally rises to a certain height and a certain time, thereby protecting the safe operation of the circuit.