A fuse reducer can help improve circuit protection. It allows you to wire a lower amp fuse to a higher amp switch, fuse holder, or fuse clip. This is useful for protecting circuits in vehicles and motor-driven machinery because it allows use of fuses closer in size to the nameplate current. Install fuse reducers in equipment and machinery for added protection. Grainger has the perfect option of a fuse kit with various-sized fuses for continued maintenance.