Answer / anand

KA Rating of Circuit Breaker is nothing but a Short Circuit
Breaking Current Capacity of Circuit Breakers which is
around 40 KA EHV Circuit Breaker.
The Circuit Breakers do experience Mechanical Stresses
during closing & opening operations.

Answer / chethan

kilo ampere rating

Answer / shreerang r deshmukh

It is the capacity of the breaker to sustain for the period
of 3 miliseconds. It varies as per the normal current
capacity of the breaker.

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