Max.Current:100A
Max.Voltage:3*230/400V
LoRaWAN + RS485 Modbus RTU
EU868MHz | Remote Meter Reading
Active / Reactive Energy
Voltage, Current, Power & Demand
Bidirectional Energy Measurement
4 Tariffs | 8 Time Periods
Alarm Detection | Event Records
Applications
Smart Buildings | Commercial Energy Monitoring | IoT Energy Systems
1.Product Presentation
EM513126 is a three phase four wire multifunctional LoRaWAN energy meter designed for smart energy monitoring and remote meter reading applications.
This DIN rail mounted smart electricity meter supports LoRaWAN wireless communication and RS485 Modbus RTU local communication, enabling real-time energy data collection and remote management through cloud platforms or energy management systems.
The meter supports three phase four wire power supply and single phase operation, making it suitable for a wide range of residential, commercial and industrial distribution systems.
With advanced measurement functions, EM513126 can measure bidirectional active and reactive energy, power, voltage, current, frequency, power factor and demand parameters. Combined with multi-tariff management, event recording and remote alarm functions, it provides an efficient solution for smart buildings, energy monitoring systems and IoT-based power management.

2.Technical Parameters
| Product Name | EM513026 |
| Ref. voltage | 3×230/400V (±20%) |
| Ref. current | 0.25-5(100)A |
| Impulse constant | 1000imp/kWh |
| LCD display | LCD6+2 |
| Operation temp. | -40~+70℃ |
| Relative humidity | <95% |
| Ref. frequency | 50Hz |
| Accuracy class | Class.B |
| Starting current | 0.4%/Ib(CI.1) |
| Load control | Built-in A magnetic latching relay |
| Power consumption | ≤ 1W,<10VA |
| Reference standard | EN 50470-3:2022; EN IEC 62052-11-2021 A11-2022 |
| Communication | LoRaWAN, RS485 |
| Frequency Band | EU863-870 MHz |
| LoRa Antenna | SMA Socket (Based/Stick Type) |
3.Dimensions and wiring diagram

4.Applications
Smart Buildings
Commercial Energy Monitoring
Residential Electricity Management
Industrial Power Distribution
Solar Energy Monitoring Systems
Energy Management Systems (EMS)
IoT Smart Grid Applications
Sub-metering Applications
5.Function Description
LoRaWAN Remote Communication & Smart Meter Reading
Supports LoRaWAN wireless communication for long-distance remote data transmission.
Enables remote meter reading without additional wiring.
Supports periodic active reporting to cloud platforms.
Reporting content and communication intervals can be configured according to application requirements.
Suitable for IoT energy monitoring and smart building management systems.
Multi Function Energy Measurement
The meter provides comprehensive electrical parameter measurement:
Forward and reverse active energy measurement
Forward and reverse reactive energy measurement
Active power measurement
Voltage measurement
Current measurement
Frequency measurement
Power factor measurement
Maximum demand measurement
Bidirectional Energy Measurement
Supports both import and export energy measurement.
Measures energy flow direction accurately.
Suitable for applications with distributed energy systems such as:
Solar PV systems
Energy storage systems
Smart grids
Renewable energy monitoring
Multi Tariff Energy Management
Supports 4 tariff rates.
Supports up to 8 time periods.
Supports:
Holiday tariff settings
Weekend tariff settings
Helps optimize electricity cost management in commercial and industrial applications.
Intelligent Alarm & Event Recording
Supports multiple alarm functions:
Over current alarm
Over voltage alarm
Frequency deviation alarm
Power outage event
Terminal cover detection
Meter cover detection
Over Current Protection Monitoring
Users can define over current threshold values.
When measured current exceeds the preset limit, the meter immediately triggers an alarm.
If over current continues, repeated alarms will be avoided.
A new alarm will only be triggered after current returns to normal and exceeds the threshold again after the recovery time.