This one-time general purpose glass K-5/class H fuse is 250 amp, 250 volts AC, and has 50,000 amp RMS symmetrical/10,000 amp DC interrupting capacity. From the NON series, this fast-acting fuse has a melamine body style, interrupt rating of 10 kVA at 125 VAC, measures 8 5/8 x 2 1/3 inches, is a single element, and meets CSA standards Class 1421-01.