The EPM-4D and EPM-R4D current meters measure the rms value of current in 1-phase networks and store the maximum, average and instantaneous demand values. The EPM-4A current meters are supplied with a current transformer for a measuring range from 70 mA to 200 A. In addition to the functions of EPM-4D, the EPM-4C and EPM-R4C current meters have a 5 A output contact with adjustable switching delay or instantaneous trip, adjustable thresholds and hysteresis. If the measured current is above the set value, the output relay is activated after the end of the set delay time.