IEC 60364-4-43 Ed. 4.0 b:2023

This part of IEC 60364 provides requirements for:

– protection of live conductors, PEN conductors, PEM conductors, and PEL conductors against the harmful effects caused by overcurrent;
– coordination of measures for protection against overcurrent.

NOTE 1 The requirements of this document do not take account of external influences

NOTE 2 Protection of conductors according to this document does not necessarily protect the equipment connected to the conductors.

NOTE 3 Flexible cables connecting equipment by plugs and socket-outlet to fixed installations are not part of the scope of this document and for this reason are not necessarily protected against the harmful effects caused by overcurrent.