ABB

Residual current monitors, RCMs
Protect equipment from damaging earth fault currents (leakage to ground) for industrial use

Residual current monitors are residual current devices which confirm standard IEC 60947-2 Annex M and also the IEC 62020 and they can be used only to give a signal alarm in case of an insulation fault or may be used in conjunction with protective devices, monitor current leakage to ground.

Main benefits
 Minimize installation labor thanks to the modular DIN-Rail installation features
 Protects equipment and reduces downtime from damage caused by ground faults
 Minimize space thanks to the compact modularity
 Provides warning that preventive maintenance should be done to the equipment

Main features
 Compact
 Integrated
 Auxiliary elements
 Easy installation in equipment control panels and flexibility for extensions