Electrical energy meter

The 53U is a built-in active and reactive energy meterfor three-phase and single-phase networks, communicating, equipped with analogue outputs.

It is the ideal power measurement device for measurement and energy management applications for single and three-phase low and medium voltage electrical networks, transmitting data via its RS485 digital output to a supervision or energy management system.

Discover the power energy counter


Power energy counter - 53U

53U communicating power energy counter

Active and reactive energy meters for power distribution - Single and three-phase - Connection to current transformers up to 20,000 A - Mounted on a panel surface

Advantages of the 53U electric energy meter

  • Smart: monitoring and operating software, remote displays
  • Communicative: RS485 (MODBUS) communication or analogue and pulse outputs
  • Quick and easy connection
  • Large backlit display for excellent measurement visibility
  • Direct reading of measured values and counter values

Flexible and accurate

One model can be used for single-phase/2-wire and 3-wire, three-phase/3-wire, and 4-wire systems.

Users can freely choose and program major variables such like AC voltage/current, active/reactive power, power factor, AC frequency deviation, apparent power, active/reactive energy, and up-to-the 31st harmonic distortions.

Measured variables also include the maximum/minimum/average values, in total of 500 types.
Up to 1800 patterns of display combinations are available.

large backlit screen

Large backlit display

With its multi-display LCD screen and direct access keys on the front panel, the 53U electrical energy meters are easy to use.

They offer a guaranteed direct display of power and energy consumption and a large number of electrical values: I, U, V, S, FP.

Quick and easy to connect

The 53U electricity meter is specially designed to protect against phase and wiring errors and has an integrated test function.

If you make a mistake during installation, don't worry: you can fix it without starting from scratch.

The device is easy to install and commission, making it cheaper and more efficient.

configurable inputs and outputs

Configurable inputs and outputs

An open collector output can be used for energy count, pulse or limit alarm trip.

Pulse rate for energy count can be specified. The contact output can be simulated for testing the connected device.

External open collector input is typically used to reset energy count memory. The signal can be also monitored at the host system via Modbus, so that the host can start/stop monitoring according to ON/OFF status of a load (e.g. motor running or not).

Four analogue output options (4-20mA or 1-5V) are also available instead of Modbus and Di/Do interface.

Users can choose and program four among major variables, e.g. 1 VT plus 3 CT, to be converted into analogue outputs, thus eliminating needs for four independent single function transducers.


Technical specifications of the 53U Multi Power Monitor

technical specifications of the 53u power energy meter
  • Single phase and 3 phase / 3-wire / 4-wire version
  • Simultaneous measurement of current, voltage, active/reactive/apparent power, active/reactive energy, power factor, frequency
  • Voltage Input: 480V Current Input: 1A or 5A
  • Primary voltage: 50-400 000V
  • Primary current: 1-20 000A
  • Universal supply voltage: 100-240V AC / 110-240V DC
  • High performance: voltage/current 0.3%, energy 1%.
  • High accuracy version: voltage/current 0.2%, energy 0.5%.
  • Harmonics display by rank and phase up to 31st harmonic distortion measurement
  • Format 96 x 96 mm
  • IP50 front panel - Programmable via front panel keys
  • LCD backlighting - 4 digital displays
  • Plug-in terminal block
  • Logic input
  • Modbus + open collector output (alarm or pulse)
  • Optional analogue output

Configuration Software for electrical energy meter measurements display

All measured variables can be transferred to the host PC via RS-485/Modbus RTU.
Conversion factors, system configuration, interval times are programmable using the PC Configurator Software locally or remotely.
Measured values, counter values, setting data are stored in the non-volatile memory at the power off.

measurement visualization configuration software

User-friendly power monitor setting with PC software

Save yourself much time using the free PC Configurator software (model: PMCFG) to create, save and download your own parameter settings.

Monitoring and storing of measured/computed values on the PC

The PC Recorder Light MSR128LU dedicated for the 53U / L53U is free for downloading from our website.


Optimize your electricity consumption now with our power energy counters!