Operating the circuit-breaker panel
139-2021.9 / 07 NXAIR M 41
After closing, the closing spring is immediately automatically charged by the motor and the
spring state indicator changes to CHARGED.
Fig. 55: Position indicator on the circuit-breaker, CLOSED
The position indicator on the circuit-breaker changes from 0 position to I position. The
operations counter is increased by 1. The circuit-breaker is closed.
10.10 Opening the circuit-breaker electrically
Conflicting operation
Operating the circuit-breaker electrically is possible locally or from a central
control. The requirement of setting the panel to either local or remote control
prevents operating the panel locally and centrally at the same time.
Depending on the intended operating mode, set the panel to either local or
remote control (for example by switching the local-remote switch).
Unexpected motor noise and vibration
Operating the circuit-breaker discharges and/or charges the spring energy store
abruptly. This causes a short loud noise and low vibration.
Expect switching noise and low vibration from inside the circuit-breaker.
The opening spring is charged during the closing operation.
Change of the spring state indicator
during closing operation:
CHARGED NOT CHARGED CHARGED
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