BOJACK 20 Pcs High Quality Fast-blow Glass Fuse<br><br> Fuse Dimension:5x20mm/0.2x0.78 Inch <br><br> Fuse Current: 0.2A<br><br> Fuse Voltage: 250V<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<br> the current when the current abnormally rises to a certain height and a <br>certain time, thereby protecting the safe operation of the circuit.