Residual Current Monitors

Residual current monitors (RCM) are used to monitor earthed systems both, TN and TT systems, for fault currents or residual currents. RCM measuring devices indicate the actual value, record the long-term development and report the exceeding of a critical current. If the critical current threshold is exceeded, a Residual Current Circuit Breakers (RCD) Devices will switch off the power supply.