Space saving POWR-GARD class T fuses are the most compact fuses available in ratings above 30 A - less than one-third the size of comparable class R fuses. when rated in accordance with the NEC, class T fuses provide fast-acting overload and short circuit protection for non-inductive circuits and equipment used in inductive circuits, the ampere rating of class T fuses must be increased to prevent opening on inrush currents. in such instances, class T fuses may provide only short circuit protection.