SENTRON 5SV8, Residual Current Monitors

Residual current monitors (RCM) monitor residual current in electrical installations and issue a signal when the residual current exceeds a set value.
RCMs are used primarily in plants where a fault should result in a signal but not in disconnection. This enables plant operators to detect faults and eliminate their causes before the protective devices disconnect the installation, which increases plant and operating safety and cuts costs.