The ABB 55A212942P4RB fuse is a medium voltage, R-rated, bolted-type fuse designed for 5 kV systems with a 130 Amp rating. This Limitamp fuse offers reliable short-circuit protection for medium voltage motors and motor controllers, ensuring safety in demanding industrial environments. Its current-limiting capability makes it ideal for motor starters, where it acts as a backup fuse coordinated with overload relays to handle the stresses of motor starting cycles. The fuse elements are built to endure repeated motor starts without compromising performance. You’ll often find this kind of fuse specified by motor starter manufacturers to guarantee compatibility and safety. BSP Automation supplies this robust fuse, making it accessible for your medium voltage motor protection needs. In the business, these R-rated fuses are sometimes called the go-to “workhorses” for motor starter circuits.