Bussmann FRS-R-125 Fast Acting Industrial Fuse

FRS-R-125 is a Bussmann (Eaton) Class RK5 time-delay, dual-element, current-limiting industrial fuse rated at 125 A. It is designed for protection in power-distribution panels, motor controllers, and other heavy equipment, tolerating up to 600 VAC or 300 VDC with an interrupting rating of 200 kA at 600 VAC and 20 kA at 300 VDC. The fuse is non-indicating, aligning with standard RK5 devices, and its dual-element construction provides reliable protection against short circuits and overloads while handling inrush currents typical of motors and transformers. As part of the FRS-R family, the FRS-R-125 fits standard RK5 fuseholders used in industrial systems, offering high fault-current capability and consistent protection in demanding environments. The 125 A rating identifies this device within the 600 VAC / 300 VDC protection envelope, making it suitable for feeders, motor drives, control circuits, and other protection points in manufacturing and processing facilities where precise, dependable circuit protection is required.