Multi-channel smart energy meter for DIN rail | 6 tariffs | 220 V AC | Modbus RS485 | ME131M2

Technical specifications:

Type: Multi-channel smart energy meter
Model: ME131M2
Mounting: DIN rail
Communication: MODBUS RS485
Power supply: 220 V AC (95–265 V AC), integrated power supply for main and secondary (sub-meter) measurements
Harmonic analysis: up to the 50th harmonic
Tariffs: 6 tariffs
Data logger: none (no internal memory)
I/O and protection:

Relay output: electromagnetic relay

Input: opto-isolated, insulation up to 5 kVrms

Supported current sensors: Rogowski coils – 333 mV CT (up to VT 500 kV)
Available nominal current ranges: 10 A / 100 A / 600 A / 1000 A / 3000 A / 6000 A
Coil / CT transfer ratios: 50 mV/kA @ 50 Hz; 85 mV/kA @ 50 Hz; 100 mV/kA @ 50 Hz; 333 mV (0–634 mV AC)

Functions:

Current measurement – measures electrical current via external current sensors (CT or Rogowski coil).

Voltage measurement – real-time monitoring of phase and line voltages.

Active, reactive, and apparent power calculation – shows actual energy consumption and load.

Energy metering (kWh, kvarh) – records consumed or generated electrical energy.

Power factor (cos φ) monitoring – helps assess electrical network efficiency.

Harmonic analysis – enables detection of power quality distortions.

Imbalance and load analysis – helps identify uneven phase loading.

Data transmission via Modbus RS485 – integration with BMS, PLC, and SCADA systems.

Applications:

Commercial and multi-apartment buildings – ideal for metering tenants, individual premises, or zones from a single DIN device.

Engineers and energy managers – enables load analysis, energy optimization, and power quality evaluation across multiple circuits.

Electricians / system integrators – DIN mounting, RS485 communication, and wide sensor support allow fast integration into BMS, SCADA, or PLC systems.

Advanced users – suitable for solar installations, workshops, or larger homes requiring multi-line monitoring without complex infrastructure.

Advantages:

One device – multiple circuits

Wide current range (up to 6000 A)

Rogowski coil support – non-invasive measurement

Modbus RS485 – easy integration

6 tariffs and harmonic analysis

Disadvantages:

No internal data memory

Current sensors not included

Correct configuration required according to selected coil / CT