The NO.263-R Bussmann Class R fuse reducer is a 250 V AC accessory that allows using a 60 A Class R fuse in a 30 A Class R fuse path, effectively down-rating the protection to 30 A in Bussmann FRN-R or LPN-RK 250 V fuse blocks. It is non-indicating and UL listed with CSA certification, designed for panel and switchgear applications where fuse sizing must be standardized across equipment. Compatible with Bussmann Class R fuse holders, the reducer is commonly used in industrial control panels, motor control centers, and power distribution assemblies to simplify fuse stocking and ensure downstream protection aligns with system requirements.
