1SYG231445R4051

The ABB M1M 20B-1 Modbus is a digital electrical power meter designed for monitoring electrical systems in industrial and commercial installations. It measures key electrical parameters and supports total harmonic distortion (THD) monitoring and four-quadrant import/export energy measurement, making it suitable for applications such as power-factor management, energy monitoring and local energy generation systems.

The meter features a digital LED display, Modbus RTU communication over an RS-485 interface, and one digital output for pulse signalling. It can integrate with PLCs, SCADA systems, building management systems and energy monitoring software to enable remote data collection. Its Class 1 accuracy rating corresponds to ±1% active-energy measurement accuracy.