TL Plug fuses time delay Edison base tron 30 Amp rating box of 4. 125 volt maximum. Edison base. UL Listed. Time-delay loaded link TL Series Edison base plug fuses pass motor overload starting currents without opening and allow closer sizing to motor load for added protection. Passes small motor overload starting and inductive load circuits with high in-rush current levels. Heat absorbing metal bead on element link for time delay. Used with box cover units to provide equipment protection.