Bussmann FRS-R-600 Fuse

FRS-R-600 is a 600-volt Class RK5 fuse from Bussmann’s Fusetron family, a time-delay (dual-element), current-limiting device designed for reliable protection of 600 V AC circuits in industrial equipment and power distribution panels. The 600 A current rating is paired with a non-indicating construction and a high interrupting capability, typically listed as up to 200 kA at 600 VAC and 20 kA at 300 VDC in RK5 configurations. As a branch-circuit protection fuse, it supports applications such as motor drives, transformers, and miscellaneous 600 V feeders, and is compatible with Bussmann RK5 fuse blocks and holders, preserving the Fusetron time-delay and current-limiting performance. Available through distributors like Mouser, DigiKey, and Grainger, the FRS-R-600 is part of the Bussmann/Fusetron lineup and is specified for 600 VAC / 300 VDC operation, reinforcing its suitability for industrial protection in 600 V systems.