Fuse

Fuse at U+23DB is a technical symbol for an electrical fuse, a protective component that melts or opens a circuit when current is too high. It belongs to the Miscellaneous Technical block, which includes many diagram, engineering, and equipment-related signs. Its main real-world use is in electrical and electronic schematics, parts lists, and technical documentation where a compact symbol is needed to label or represent a fuse in a circuit. For example, a diagram of a power supply or appliance may mark the protective element near the input line with ⏛ instead of spelling out “fuse,” especially in symbol tables or simplified drawings. The character is uncommon in ordinary text because most engineering drawings use graphical schematic symbols from CAD software rather than plain-text Unicode. It can still be useful in searchable notes, educational materials, maintenance checklists, and Unicode-based symbol charts where keeping the fuse sign as text is more convenient than inserting an image.