scope:

This clause of part 1 is applicable except as follows: Replacement of the first paragraph by: 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. TDS are provided with a time-delay device operated by mechanical, thermal, pneumatic, hydraulic or electrical means or by a combination of them. Electronic TDS are within the scope of IEC 60669-2-1. TDS including only passive components such as resistors, capacitors, PTC and NTC components and printed wiring boards are not considered to be electronic TDS.