A 15-amp glass fuse is a cylindrical fuse commonly used to protect electrical circuits from overloading and short-circuiting. These fuses consist of a glass tube housing a thin metal wire designed to melt and interrupt the circuit when the current exceeds 15 amps. Glass fuses are often used in household appliances, automotive systems, and various electronic devices. The transparent casing makes it easy to check if the fuse has blown. Replacement is straightforward and does not require special tools, making them user-friendly.