scope:

This standard applies to RCDs equipped with screw-type terminals of copper - or of alloys containing at least 58 % of copper (if worked cold) or at least 50 % of copper (if worked otherwise), or of other metal or suitably coated metal, no less resistant to corrosion than copper and having mechanical properties no less suitable - for use with untreated aluminium conductors, or with screw-type terminals of aluminium material for use with copper or aluminium conductors. This standard cannot be used alone but have to be applied together with a RCD product standard if an RCD is equipped with screw-type terminals for external untreated aluminium conductors and with aluminium screw-type terminals for use with copper or with aluminium conductors. In this standard, copper-clad and nickel-clad aluminium conductors are considered as aluminium conductors.