What is RAR (automatic reset) option in breaker and what are all those breakers which can be equipped with this feature?

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Allow customer to keep a service continuity in case of electrical tripping : no longer necessary to press the reset button to enable the closing after tripping.
The reset button and SDE contact are still indicating that a fault occurred, but the tripping bar is in operation position for immediate closing.

Note : this option is always associated with a MCH and XF coil for remote closing.