This standard BS EN 60669-2-3:2006 Switches for household and similar fixed electrical installations is classified in these ICS categories:
29.180 Transformers. Reactors
29.120.40 Switches
This part of IEC 60669 applies to time-delay switches (hereinafter referred to as TDS) with a rated voltage not exceeding 440 V and a rated current not exceeding 63 A, intended for household and similar fixed electrical installations, either indoors or outdoors, operated by hand and/or by remote control.