WG 9 - TC 23/WG 9

IEC 63172:2020 provides a methodology for determining the energy efficiency class of electrical accessories, to enable the system designer to determine the most efficient components for an electrical installation, also considering all functionalities.
This methodology is based on the energy consumption, taking into account the individual functions of the accessory.
The energy efficiency class approach contributes to the overall reduction of the energy consumption of an electrical installation.