Find the unique glass fuse your application requires. Primarily used in antique cars and trucks, glass fuses fill specific needs for overcurrent protection in ways that other types of fuses cannot. Littelfuse produces a wide array glass fuses for aftermarket retails sales. Our glass fuses are rated at 32 V dc or 50 V dc, and they have ampere ratings ranging from 125 mA to 50 A. We provide these products in several lengths and diameters.