ABB Voltage and Current Monitoring Relays
Voltage and Current Monitoring Relays
For the monitoring of currents and voltages in single-phase AC/DC systems, ABB’s CM range contains a wide selection of powerful and compact devices all in only 22.5 mm wide. This measuring range includes current and voltage monitoring relays for over- and undercurrent protection, over- and undervoltage protection and phase loss monitoring – from 3 mA to 15 A and from 3 V to 600 V. Incorporating ABB’s long-term experience the CM range provides highest safety and reliability for your electric installation.
Current monitoring – the ABB current monitoring relays CM-SRS.xx reliably monitor currents which exceed or fall below the selected threshold value. The functions overcurrent or undercurrent monitoring can be preselected. Single- and multifunction devices for monitoring of direct or alternating currents from 3 mA to 15 A are available.
Current window monitoring (Imin, Imax) – the window monitoring relay CM-SFS.2x is the right solution if the application requires the simultaneous monitoring of overand undercurrents.
Voltage monitoring – the ABB voltage monitoring relays CM-ESS.xx are used to monitor direct and alternating voltages within a range of 3 to 600 V. Over- or undervoltage detection can be preselected.
Voltage window monitoring (Umin, Umax) – for the simultaneous detection of over- and undervoltages, the window monitoring relay CM-EFS.2 can be used.