Why Choose the ABB M4M 20 MODBUS Network Analyzer?
The ABB M4M 20 MODBUS, order code 2CSG251141R4051, is a high-performance three-phase network analyzer designed for comprehensive electrical parameter monitoring, energy measurement and basic power quality analysis in commercial and industrial electrical systems. As part of the advanced ABB M4M 20 network analyzer series, it provides accurate metering together with digital communications for integration into modern energy management and automation systems.
The M4M 20 MODBUS combines Modbus RTU over RS485 with integrated Bluetooth Low Energy (BLE) connectivity, enabling wired communication with supervisory systems as well as convenient smart commissioning. Its graphic colour display provides clear visualisation of measured electrical parameters, while two digital outputs provide additional flexibility for signalling and energy monitoring applications.
Designed for three-phase electrical systems, the analyzer supports a voltage measurement range of 50–400 V AC, indirect current measurement using 1 A or 5 A current transformers and a wide-range 48–240 V AC/DC auxiliary supply. With Class 0.5S active energy accuracy and True RMS measurement, it is well suited to switchboards, industrial distribution systems and building energy monitoring installations.
Key Advantages
- Comprehensive three-phase electrical network monitoring for energy and power management.
- Modbus RTU over RS485 enables straightforward integration with industrial automation and monitoring systems.
- Integrated Bluetooth Low Energy (BLE) supports convenient smart commissioning.
- Class 0.5S active energy accuracy provides dependable energy measurement.
- Supports indirect current measurement using standard 1 A and 5 A current transformers.
- Graphic colour display provides clear visualisation of electrical and power quality parameters.
- Two digital outputs support signalling and energy management applications.
Key Features
- ABB M4M 20 network analyzer series.
- Three-phase network measurement.
- 50–400 V AC voltage measurement range.
- 1 A / 5 A current transformer inputs.
- 48–240 V AC/DC auxiliary supply.
- Modbus RTU communication via RS485.
- Integrated Bluetooth Low Energy (BLE) connectivity.
- Two digital outputs for external signalling functions.
- Graphic 3.5-inch colour LCD display.
- True RMS electrical measurement.
- Measurement of AC voltage, AC current, frequency, power factor, active, reactive and apparent power.
- Basic power quality monitoring including total harmonic distortion (THD).
- IP54 front protection for panel-mounted installations.
- Compact 96 × 96 mm front-panel format.
Reliable Electrical and Energy Monitoring
Network analyzers such as the ABB M4M 20 MODBUS provide continuous visibility of key electrical parameters within power distribution systems. True RMS measurement and Class 0.5S active energy accuracy help operators monitor energy consumption, analyse electrical loads and identify conditions that can affect system efficiency and power quality.
The M4M 20 series is designed for commercial and industrial energy monitoring applications. Modbus RTU communication over RS485 enables measured data to be integrated into PLCs, building management systems and energy management platforms, while Bluetooth connectivity provides a convenient interface for local commissioning and configuration.
Typical Applications
- Industrial electrical distribution systems.
- Low-voltage switchboards and control panels.
- Commercial building energy monitoring.
- Energy management and efficiency systems.
- Factory and production facility power monitoring.
- Electrical load and consumption analysis.
- Building management and automation systems.
- Basic power quality and harmonic monitoring.
