1.1 This standard covers air switches up to 600 V, individually enclosed, that have all current-carrying parts enclosed, that are operable by hand by means of an external handle, and that are intended for use in accordance with the National Electrical Code. . 1.2 This standard covers enclosed switches whether or not fitted with screw or cartridge fuses, 1.3 This standard covers enclosed switches intended for general use, with indication of the rated current in amperes, or the rated power in (HP) and the Enclosed switches intended to be used only for motors, with indication of the rated power in HP and without indication of the rated current in amperes. l.4 This standard does not cover connection equipment; lever switches for normal use in installations; switches having features intended primarily for starting and protecting motors, with devices for shorting fuses during starting; switches provided with automatic disconnecting means to provide overload protection without other circuit breakers or fuses; devices in which fuses or a part are removed to carry out a disconnection operation.