Low-voltage switchgear and controlgear - Part 4-2: Contactors and motor-starters - AC semiconductor motor controllers and starters
- updated EMC normative references and associated requirements,
- new references to IEC 60947-1,
- marking of electronic relays without thermal memory,
- marking of tripping time at 0 °C ambient or below,
- new test requirements for limits of operation of time-delay overload relays,
- new classes of overload current withstand time,
- damp heat, salt mist, vibration and shock tests,
- short-circuit test in the smallest enclosure,
- update of the routine and sampling tests.
The contents of the corrigendum of July 2012 have been included in this copy.
This publication is to be read in conjunction with IEC 60947-1:2007.
|Publication type||International Standard|
|Available language(s)||English/French, Spanish|
|TC/SC||TC 121/SC 121A - Low-voltage switchgear and controlgearrss|
|ICS||29.130.20 - Low voltage switchgear and controlgear|
|File size||2131 KB|
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