GBB-4-R is a very fast-acting ceramic tube fuse designed for overcurrent protection in electrical circuits. It features a 4A current rating with voltage ratings of 250Vac and 125Vdc, and offers high AC interrupting ratings of 10,000A at 125Vac and 10,000A DC interrupting rating at 125Vdc. The fuse has a physical size of ¼" x 1¼" (6.35 x 31.75mm) with ceramic tube and nickel-plated brass endcap construction, providing a typical DC cold resistance of 0.03175O and typical voltage drop of 0.1778V. Optional axial leads are available, and the product is UL Recognized to standard 248-14 and CSA Component Accepted. This fuse is ideal for applications requiring rapid circuit interruption to protect sensitive electronic equipment.