This standard establishes specifications for high-voltage (>1000 V) distribution class current-limiting type fuses and associated accessories. All of these devices are intended for use on alternating current (ac) systems. These specifications apply to the following specific types of equipment: a) Distribution class current-limiting type fuses and fuse units b) Distribution class current-limiting fuse disconnecting switches c) Item a) and item b) used in fuse-enclosure packages d) Fuse supports, fuse units, refill units, and fuse mountings of the type intended for use with distribution class current-limiting type fuses, and fuse disconnecting switches. e) Disconnecting devices created by the use of a removable switch blade in a distribution class current-limiting type fuse support.