Cartridge fuses are used to protect Motors and branch circuits where higher amps or volt ratings are required. They are available in a wide variety of sizes, amp and volt ratings up to 600VAC and 600 amps. Cartridge fuses are used extensively in commercial, industrial and agricultural applications as well as residential fuse panels, air conditioning, pumps, appliances and other equipment. Cartridge fuses are available in two types. General purpose fuses have no time-delay and protect fuse panels, appliances and branch circuits. Heavy- duty fuses have a time-delay feature, allowing momentary motor startups. Both are available in 250VAC and 600VAC versions with catalog symbol and amp rating stamped on the knife blade or end cap.