The term FUSE BOX UNIT is composed of three parts: FUSE, BOX, and UNIT. The first part, FUSE, is an electrical device that is designed to protect an electrical circuit from damage caused by excess current. The second part, BOX, refers to the container or enclosure that houses the fuses. The third part, UNIT, is a single component of a larger system. Together, these three components form a FUSE BOX UNIT, which is an electrical device that contains multiple fuses and is used to protect circuits from overloads.