A fuse box is an electrical distribution board that contains one or more fuses, which are designed to protect electrical circuits from damage caused by excess current flow. The fuses are made of a thin wire that melts when too much current flows through it, breaking the circuit and preventing overheating or fire. The fuse box is typically located in a convenient location, such as near the main electrical panel or in a garage, and is used to control the flow of electricity to different parts of a home or building.