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Fuses install into an electrical circuit to protect against overcurrent that could damage equipment, start fires, or cause electrical shock injuries. These electrical safety devices contain a metal strip or wire that melts to disconnect the circuit when exposed to a current load greater than the fuse's current rating. They react to conditions such as circuit overloads, shorts, or faults. Fuses are used in new electrical installations or as replacements for blown or faulty fuses.
