The Bussmann series BP-NON-20 is a fast acting, non-current limiting cartridge fuse pack used in lighting circuits, main fuse panel protection and other circuits that don't contain large electric motors or inductive loads.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 600 Vac 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.As a fast-acting fuse, it is designed to respond quickly when an overcurrent event happens. Unlike time-delay fuses, fast-acting fuses do not have a built-in delay. Instead, they respond quickly to overcurrents to ensure that sensitive equipment is protected from potential damage caused by short circuits or other fault conditions. They are particularly useful to protect electronic devices and components that could be damaged by even short durations of overcurrent. Material: Paper.