scope:

Applies to plugs and socket-outlets, cable couplers and appliance couplers with a rated operating voltage not exceeding 690 V, 500 Hz and a rated current not exceeding 125 A, primarily intended for industrial use, either indoors or outdoors. This standard applies to plugs and socket-outlets, cable couplers and appliance couplers with pins and contact tubes of standardized configurations. This standard applies to plugs and socket-outlets, cable couplers and appliance couplers, hereinafter referred to as accessories, for use when the ambient temperature is normally within the range -25 °C to 40 °C. The use of these accessories on building sites and for agricultural, commercial and domestic applications is not precluded. Socket-outlets or appliance inlets incorperated in or fixed to electrical equipment are within the scope of this standard. This standard also applies to accessories intended to be used in extralow voltage installations.