Littelfuse FLSR-125ID is a time-delay fuse designed for circuit protection in industrial power distribution systems. It features a 600V AC/DC voltage rating and 125A current capacity with a 200kA interrupting rating at 600V for reliable overcurrent protection. The compact 1.84" diameter plug-in design (RK5 class) weighs 1 lb and uses a single-barrel construction for easy installation. UL-recognized and compliant with industry standards, this Powr-Gard series fuse is ideal for motor branch circuits, transformers, and feeder protection in commercial/industrial facilities.