This standard applies to high voltage fuses (above 600 volts) and accessories as follows: (1) Power fuses for systems or circuits above 600 volts (2) Outdoor and indoor fuse disconnecting switches (3) Fuse supports, fuse mountings, fuse hooks, fuse tongs, fuse units, refill units, and fuse links, all of the type used exclusively with products listed in (1) and (2)