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Is there any problem if the control supply is continuously available at MX(Shunt coil) or XF(Closing coil) for Masterpact breaker

As per attached catalog page,the supply on MX and XF coils can be maintained or automatically disconnected.

The MX release instantaneously opens the circuit breaker when energised. The MX release locks the circuit breaker in OFF position if the order is maintained (except for MX “communicating” releases).
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