Cooper Bussmann FRN Series 100 Amp Time-Delay Fuse 0517121018539.99Buy!$Scheels.comDelivery: in USA ReportThe Cooper Bussmann FRN Series 100 Amp Fusetron Time-Delay Fuse is a Class RK5 with a dual element time delay. This fuse is current limiting at 10 seconds (minimum) at 500% of the rated amps. The fuse more→is ideal for use in power panel boards, motor-control centers, combination starters and machinery disconnect. Material: Brass.