Answer / master rapper

a closing resistor is attached to the poles of a circuit breaker to provide damping effect to over-voltage due to switching transients. It simply provides additional protection to the insulation/dielectric of the circuit breaker.

Answer / william wright

Closing resistors are also intended to allow shunting of
over-voltages power surges that cause that can damamge the
system protected.

Answer / k.prakashchandra

You mean the resistance connected in series with the
closing coil ? It is used to reduce the current in solenoid

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