what is a plug fuse
Noun. 1. plug fuse-a fuse with a thread that screws into a socket. electrical fuse, fuse, safety fuse-an electrical device that can interrupt the flow of electrical current when it is overloaded.1  Facebook.oun. 1. plug fuse-a fuse with a thread that screws into a socket. electrical fuse, fuse, safety fuse-an electrical device that can interrupt the flow of electrical current when it is overloaded.