BK/GMA-1A is a fast acting glass tube fuse designed for overcurrent protection in electronic circuits. It features a 1A current rating with a 250V AC voltage rating and a 5mm x 20mm physical size with nickel-plated brass endcap construction. The fuse has an AC interrupting rating of 35A at 250V and 10,000A at 125V, with a typical DC cold resistance of 0.163 ohms and maximum voltage drop of 300mV. Designed to UL/CSA 248-14 standards with UL Listed and CSA Certified approvals, this fuse is suitable for general-purpose circuit protection applications requiring fast response to overcurrent conditions.