Fuse, Tri-Onic® Class RK5, Time Delay, 250V AC/DC, 150A, 200kA AC / 20kA DC Interrupt Rating, Blade terminal, Cylindrical body, Dual element, Fiberglass tube, Current limiting, Rejection style, For motor circuits, mains, feeders, branch circuits, transformers, and service entrance equipment, UL listed, CSA certified