The Cooper Bussmann FRN series 30 amp Brass Time Delay Fuse Cartridges have fiberglass tubes and are current limiting, class RK5, dual-element time-delay fuses with a 10-second minimum at 500 percent design. Typical applications include power panel boards, motor control centers, combination starters and machinery disconnects. These fuse cartridges are UL- and CSA listed for safety.
Used in power panel boards, motor control centers, combination starters and machinery disconnects