"BUSSMANN" FUSETRON DUAL- ELEMENT TIME-DELAY FUSE *30 amp *250 volt *Current limiting fuse class RK5 *Fuse length: 2" x9/16" dia. *Ferrule base *Typical applications: power panel boards, control centers, combination starters, machinery disconnects *UL listed *Replaces Ace no. 31073 *Bulk *Discovery CON, NBR, SUP, HWU