The Cooper Bussmann FRN series 20 amp Brass Time-Delay Cartridge Fuses are designed for use in power panel-boards, motor-control centers, combination starters and machinery disconnects. The cartridges are CSA and UL listed and rated for up to 250 volt.
For use in power panel-boards, motor-control centers, combination starters and machinery disconnects
Class RK5
Current limiting 10 seconds (minimum) at 500 percent rated amp s