BK/GMA-7-R is a fast-acting glass tube fuse designed for circuit protection applications, featuring a 7A rated current and 125V AC voltage rating. The fuse has a physical size of 5 mm × 20 mm with a glass tube construction and nickel-plated brass endcap, providing reliable overcurrent protection with low breaking capacity. It exhibits a typical DC cold resistance of 0.012 O and a maximum voltage drop of 110 mV at rated current, with an interrupting rating of 10,000 amps at 125V AC. The fuse is UL Recognized (Guide JDYX2, File E19180) and CSA Certified (Class 1422-01), making it suitable for industrial and commercial electrical systems where fast-acting protection and consistent performance are required.