Cooper Bussmann FRS-R-200 RK5 Time Delay Fuse 200A

Product Description

The COOPER BUSSMANN FRS-R-200 is a cartridge-style, time delay fuse rated at 200 amps and classified as UL Class RK5. Designed for general-purpose overcurrent protection, it provides a deliberate delay to ride through harmless inrush currents while still responding quickly to sustained fault conditions. The dual-element construction separates the overload and short-circuit sensing functions, improving protection accuracy in motor and transformer circuits. At 9-5/8 inches in overall length, it installs into standard bolt-on fuse holders and disconnect switches sized for 200-amp Class RK5 fuses. Licensed electricians and industrial maintenance technicians are the primary installers.

The FRS-R-200 suits residential, commercial, and light industrial applications where reliable overcurrent protection is required on motor branch circuits, feeder circuits, and service-entrance equipment. Its time delay characteristic makes it well matched to single-phase and three-phase motor loads where startup inrush would otherwise cause nuisance trips with a fast-acting fuse. The bolt-on mount type simplifies installation in panel boards, disconnect enclosures, and combination motor starters that accept Class RK5 cartridge fuses at this amperage rating.

Key Features

• 200-amp rating with time delay response for motor and transformer inrush tolerance
• Class RK5 classification providing current-limiting overcurrent protection
• Dual-element design separates overload and short-circuit sensing for improved protection accuracy
• Bolt-on mount type for secure installation in standard 200-amp fuse holders and disconnects
• 9-5/8 inch overall length fits standard Class RK5 cartridge fuse equipment
• CE Certified, CSA C22.2 No. 248.12 Certified, and UL Listed 248-12 Class RK5 (Guide JDDZ File E4273)

Compatibility

Designed as an OEM-style replacement for Class RK5 cartridge fuse positions in bolt-on fuse holders, fusible disconnect switches, and panelboard equipment rated for 200-amp fuses at this body length.

Installation Notes

Installation should be performed by a licensed electrician in accordance with applicable NEC article requirements for overcurrent protective devices. Always open and lock out the disconnect or panel supplying the fuse before replacing or inspecting the fuse. Verify that the replacement fuse ampere rating and class match the original equipment nameplate before energizing. Do not install a fuse with a higher ampere rating than the circuit or equipment is designed to handle.