scope:

This International Standard applies to two- up to five-wire installation couplers with or without earthing contact and with a rated voltage up to and including AC 500 V and a rated connecting capacity up to and including 10 mm2 for permanent connection in indoor installation systems according to IEC 60364. Installation couplers with additional contacts for voltages other than mains voltages are outside the scope of this standard. An installation coupler consists of one installation socket and one installation plug designed by the manufacturer to be connected together forming a given system according to this standard. Installation couplers are provided with retaining means and they are intended for connection and disconnection without load. Installation couplers shall not be used to replace socket-outlet systems. Installation couplers complying with this standard are suitable for use at ambient temperatures from -5 °C to 40 °C (conditions AA4 of IEC 60364-5-51). In locations where special conditions prevail, as in ships, vehicles and the like and in hazardous locations, for example where explosions are liable to occur, special constructions may be required.