Fuses
Fuses are crucial parts of electrical systems. They protect circuits by disconnecting them when too much current, or an overcurrent, flows. Fuses are made of a material that melts, breaks a circuit, and cuts off the flow of electricity. This averts harm to the system by preventing what may come next if the current isn't interrupted. Fuses are found in myriad types, each suited to the job and level of protection needed; they are rated, just as switches are.
Cartridge, blade, and ceramic fuses are universal, with each kind specially designed for particular situations. Cartridge fuses are generally used in the industrial setting. Blade fuses are found almost exclusively in automotive applications. Fuses work by offering a path of lower electrical resistance than the circuit itself. If a condition in a circuit causes an unsafe level of current to flow, the fuse fails.
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