The BK1/GMC-2.5-R is a medium time-delay, low breaking capacity fuse designed for overcurrent protection. It is rated for 2.5A and 250Vac and features a glass tube and nickel-plated brass endcap construction in a standard 5mm x 20mm size. Key electrical characteristics include an interrupting rating of 100A at 250Vac, a typical DC cold resistance of 0.035 Ω, and a maximum voltage drop of 130 mV. Designed to UL/CSA 248-14 standards, this fuse provides reliable protection for a variety of consumer and industrial electronics.