Littelfuse FLSR050ID Class RK5 Time-Delay Indicating Fuse, 50A, 600V, Lot of 10

The Littelfuse FLSR050ID is a Class RK5 time-delay indicating fuse designed for reliable overcurrent protection in industrial and commercial electrical systems. This fuse features a 50A current rating and 600VAC/300VDC voltage rating, making it ideal for protecting motors, transformers, and service entrance equipment from overloads and short circuits. The time-delay characteristic allows it to withstand temporary surges, such as motor starting currents, without unnecessary tripping, while the indicating feature provides a visual alert when the fuse has operated, simplifying maintenance and troubleshooting. Compared to standard fast-acting fuses, the FLSR_ID series offers superior current-limiting performance with a 200kA interrupting rating, reducing arc flash hazards and equipment damage. Benefits include high reliability in harsh environments, compliance with UL and CSA standards, and easy integration into fuse blocks. Drawbacks may include higher cost than non-indicating fuses and the need for compatible holders. Commonly used in oil & gas, manufacturing, and power distribution applications, this lot of 10 unused fuses ensures cost-effective bulk purchasing for inventory or replacement needs. With proven performance in demanding settings like rig operations, these fuses enhance system safety and uptime.