Bussmann ABC-20-R Fuse, Fast Acting, 20 A, ABC Series, PK 5

Fast-acting ceramic fuses open within seconds of being exposed to overloads and short circuits. - Also called fast-blow ceramic fuses, they are highly sensitive to changes in current flow and don't tolerate temporary overload currents or power surges. - Ceramic fuses protect against overcurrent in high-current circuits found in AC or DC electronics, appliances, and electrical equipment. They have higher interrupting ratings and withstand higher temperatures than glass fuses. - These small, cylindrical fuses have an opaque body that shows no outward signs when the fuse has blown, so they're typically tested with a multimeter or ohmmeter to check their function.