Littelfuse FRS-R-90 Time-Delay Current-Limiting Fuse

Littelfuse FRS-R-90 Fusetron dual-element time-delay current-limiting fuse is rated 90 A at 600 VAC and uses RK5 mounting. This time-delay current-limiting device is designed to protect electrical circuits from overcurrent while tolerating brief overloads, providing rapid interruption of fault currents without unnecessary nuisance trips. As a member of the Fusetron family, the FRS-R-90 combines dual elements for enhanced protection and reliability in applications requiring sustained current handling at higher voltage. The RK5 designation refers to its mounting/configuration within Littelfuse's fuse-holder ecosystem, ensuring compatibility with standard RK5 holders. Suitable for systems operating at up to 600 VAC where 90 A protection is required.