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What is the purpose of the Acti9 ARA automatic recloser.

The Acti9 ARA means Automatic Reclosing Auxiliary also called automatic recloser.
The ARA reclosing auxiliary performs automatic resetting of the associated protection device (miniature circuit breaker or
residual current circuit breaker) and its auxiliaries after tripping. It allows an installation to be restored to operation without
action by the personnel in the event of a transient fault.
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