If there is no supply to the MN release, it is impossible to close the circuit breaker,
either manually or electrically. Closing is ensured when the voltage supply to the
release U u 0.85 x Un. Below this threshold, closing is not guaranteed.
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If there is no supply to the MN release, it is impossible to close the circuit breaker,
either manually or electrically. Closing is ensured when the voltage supply to the
release U u 0.85 x Un. Below this threshold, closing is not guaranteed.