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Three-phase multifunction energy meter
( ECM903 )



ECM903 three-phase multifunction energy meter is designed for measuring energy consumption in AC system.

This intelligent meter combines with micro-electronics technique, advanced integrate circuit, digital and SMT techniques. Via the special LCD display, the energy data is customer friendly and accurately presented. Additional, its compact design and DIN rail enable easy installing and maintaining.


  • Suit for 220V AC low voltage system
  • 6 +1 digits LCD display (999999.9 kWh)
  • kWh accuracy class 0.5S
  • LED indicates pulse, reverse energy
  • 3 keys for programming ØCT programmable,  pulse output
  • 35mm DIN rail installing, standard DIN ED5002
  • High temperature resistant materials
  • Spring type buckle, easy to install
  • Standard:  IEC62053-21/ 22/23,  CE, KEMA

Basic Function

  • Measure and display kWh value
  • One RS485 communication
  • Support Modbus-RTU
  • Other real time data via RS485: V, I, P, Q, S, PF, F

Optional Function

  • Multi-tariff
  • Reactive energy measuring
  • Demand analysis

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