GBB-20 is a very fast-acting ceramic tube fuse designed for overcurrent protection in electrical circuits. It features a 20A current rating with voltage ratings of 250Vac and 125Vdc, and a physical size of 1/4" x 1 1/4" (6.35 x 31.75mm). The fuse is constructed with a ceramic tube body and nickel-plated brass endcaps, with optional axial leads available. It provides AC interrupting ratings of 200A at both 250Vac and 125Vac, and 200A DC interrupting rating at 125Vdc. The GBB-20 is UL Recognized to standard 248-14 and CSA Component Accepted, making it suitable for applications requiring reliable and fast overcurrent protection.