Time Delay. Type W Replacement. Momentary overloads won't blow fuse. May also be used to replace standard (Type W) fuses. 125V AC only. Type-T Fuses are designed for use in circuits containing motorized appliances/equipment, such as washers, dryers, furnaces, air conditioners, etc. The time delay feature of these fuses prevents temporary power surges from blowing the fuse unnecessarily, as a result of momentary current overloads when appliances motors start up. UL Listed.