What is the following which is printed on electrical
appratuses like AC21 ,AC 23 , etc ?



What is the following which is printed on electrical appratuses like AC21 ,AC 23 , etc ?..

Answer / a.p.nanjappa

it is the contractor rating .
Refer to IEC standards as mention in the catalogs.
It is the recommendation of electrical standard to select
the device rating,type.

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