A fuse tester is a device used to check the continuity of a fuse. Fuses are electrical devices that protect circuits from overcurrent. When too much current flows through a circuit, the fuse will blow, breaking the circuit and preventing damage to the electrical equipment. Fuse testers are used to quickly and easily check if a fuse is blown without having to remove it from the circuit.
Fuse testers are typically small, handheld devices that are easy to use. They have two probes that are connected to the terminals of the fuse. When the probes are touched to the terminals, the fuse tester will indicate whether the fuse is blown or not. Some fuse testers also have a built-in light that will illuminate if the fuse is blown.
