Bussmann R25200-1CR Dual Element Time Delay Fuse

FRN-R-150 Fusetron dual-element time-delay fuse delivers 150 A protection in 250 VAC (125 VDC) circuits, featuring dual-element, current-limiting design with a 20/200 kA interrupt rating for robust motor and load protection in industrial controls. This unit corresponds to the UL Class RK5 family and is commonly used in control panels, transformers, and equipment that require a time-delay response to tolerate startup surges. It comes as the FRN-R-150 fuse paired with an RM25200-1CR open-block fuse holder (1-pole) for panel mounting, designed with blade terminals and a blade-body design on a fiberglass body. The 110–200 A class version, such as FRN-R-150, typically measures about 7.13 inches long with a 1.56 inch diameter, reflecting its use in higher-current applications. This combination enables straightforward, code-compliant protection using standard RK5 blocks in industrial electrical assemblies, aligning motor-drive and power circuits with reliable overcurrent protection while allowing for easy removal and replacement of the fuse element.