scope:

This standard applies to high-voltage (above 1000 V) fuses and equipment. This includes distribution class and power class fuses, distribution class enclosed single-pole air switches, distribution class and power class fuse disconnecting switches, and associated accessories that are intended for use on ac distribution systems. This standard applies to the following specific types of equipment:

a) Distribution class and power class expulsion type fuses

b) Distribution class and power class current-limiting fuses

c) Distribution class and power class fuse disconnecting switches

d) Items a) through c) used in fuse enclosure packages

e) Fuse supports, fuseholders, fuse units, switch sticks and other parts and devices intended for use with distribution class and power class fuse disconnecting switches

f) Switch blades of the type used exclusively with distribution class and power class fuses and distribution class and power class fuse disconnecting switches

g) Fuse links when used exclusively with distribution class and power class fuses and distribution class and power class fuse disconnecting switches

h) Distribution class enclosed single-pole air switches

i) Distribution class and power class expulsion, current-limiting, and combination types of external capacitor fuses used with a capacitor unit, groups of units, or capacitor banks