BK/MDL-1-1/2-R is a 1/4" x 1 1/4" time-delay glass tube fuse designed for circuit protection in electrical systems. It features a 1.5 ampere rating with a 250V AC voltage rating and an AC interrupting rating of 100 amps, providing reliable overcurrent protection. The fuse has a typical DC cold resistance of 10000 O, a typical melting time of 0.205 A²sec, and a typical voltage drop of 0.722V at rated current. The construction includes a nickel-plated brass endcap with a glass tube body, meeting UL Listed standard 248-14, and is available in a cardboard carton packaging (BK) containing 100 fuses. This fuse is commonly used in industrial control systems, power distribution equipment, and electronic devices where time-delay protection and precise current interruption are required.