7 Auxiliary wiring terminals
7.2 Relay module
PXR Electronic trip unit 01/21 MN012005EN www.eaton.com 43
7.2 Relay module
Figure 12: Relay module
The relay module is an optional accessory for circuit breakers with PXR trip
unit and is equipped with two relay outputs for command and signaling
purposes.
Use of the relay module requires the interface module and a 24-V-DC-power
supply. The two relays can be configured via the PXR trip unit display, the
communication link or the Power Xpert Protection Manager software.
The relays can be set to respond to various alarm or trip conditions. It is also
possible to control them automatically or manually via the communication
link. For example, it is possible to switch the remote operator of the circuit
breaker, or a downstream contactor can be “dropped” in order to prevent
the circuit breaker from tripping in the event of a slight overload.
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