Plug Fuse, 6 1/4 A, 125V AC, Not Rated, T Series, Indicating, Time Delay, Body Style Screw-In, Nonrejection, Interrupt Rating 10kA at 125V AC, Equivalent Brand and Series Bussmann T, Littelfuse TOO, Mersen GT, Equivalent Series GT, T, TOO, Body Material Ceramic, Dual Element, Standards CE, UL 248-11 Guide JFHR, File E56412, CSA Class 1423-01, File 53787, Package Quantity 4 Time-delay plug fuses are medium- to heavy-duty fuses for protecting residential or industrial electrical circuits with motors, relays, or solenoids. These slow-blow plug fuses tolerate temporary inrush currents without opening. Series SL fuses are medium-duty fuses for residential circuits. Series S and T fuses provide heavy-duty protection for industrial motors or critical residential circuits.