Fuse Type “D”

The “D” (diametrical) fuses used to protect against short circuit and overload in residential, commercial and industrial electrical installations have their zinc-copper fusion link surrounded by cylindrical and conical ceramic insulating material filled with insulating sand. fine-grained, to minimize electric arc formation at the time of breakage, and its silver-brass ferrule-shaped contacts, featuring a burn-out fuse on one of the ferrules.