2CMA170519R1000 ABB A42 553-120 Single-Phase CT/VT Energy Meter M-Bus

Why Choose the ABB A42 553-120 Energy Meter?

The ABB A42 553-120 is a high-accuracy single-phase transformer-connected DIN-rail electricity meter designed particularly for 16.7 Hz railway infrastructure and other applications requiring CT/VT-connected energy measurement. Part of ABB's DIN Rail Mounted Meters range, this Platinum-functionality meter provides comprehensive active and reactive energy monitoring with a maximum meter current input of 6 A.

The A42 553-120 provides four-quadrant active and reactive energy measurement, with import and export values held in separate registers. It supports a wide 100–288 V AC voltage range and measures electrical parameters including active power, reactive power, apparent power, current, voltage, power factor and frequency. Advanced functionality includes up to four tariffs, demand values, load profiles, harmonics and total harmonic distortion measurement.

Integrated M-Bus communication enables meter information to be incorporated into compatible automatic meter-reading and energy-management systems, while an infrared interface provides an additional communication option. Four configurable inputs/outputs, alarm functions, event logging and a backlit display make the A42 553-120 a comprehensive metering solution for stationary railway infrastructure and other compatible transformer-connected installations.

Key Advantages

• Single-phase CT/VT-connected energy measurement for transformer-connected installations.
• Designed specifically to support 16.7 Hz applications as well as 50/60 Hz networks.
• Maximum meter current input of 6 A.
• Wide 100–288 V AC voltage range.
• Measures both active and reactive energy.
• Four-quadrant measurement with separate import and export registers.
• Class 0.5 S active-energy accuracy and Class 2 reactive-energy accuracy.
• Integrated M-Bus communication for remote data collection.
• Supports up to four tariffs with advanced tariff control.
• Four configurable inputs/outputs for flexible system integration.
• Advanced load profiles, demand measurement, harmonics and THD monitoring.
• Wide operating temperature range of -40 to +70 °C.

Key Features

• ABB A42 Platinum electricity meter.
• Single-phase transformer-connected measurement.
• CT and VT ratios are configurable.
• Maximum meter current input of 6 A.
• 100–288 V AC supported voltage range.
• Designed for 16.7 Hz railway-frequency applications.
• Also suitable for compatible 50/60 Hz networks.
• Active and reactive energy measurement.
• Separate import and export energy registers.
• Class 0.5 S active-energy accuracy.
• Class 2 reactive-energy accuracy.
• Wired M-Bus communication.
• Infrared communication interface.
• Four configurable inputs/outputs.
• Up to four tariffs.
• Maximum and minimum demand measurement.
• Advanced eight-channel load profiling.
• Harmonics measurement up to the 16th harmonic and THD calculation.
• Alarm functionality and timestamped event logging.
• Backlit digital display.

Advanced 16.7 Hz Energy Monitoring with M-Bus

The ABB A42 553-120 is designed for stationary 16.7 Hz railway infrastructure and related applications where single-phase energy must be measured through external current and voltage transformers. Configurable CT and VT ratios allow the meter to be adapted to the installed transformers, while four-quadrant measurement provides active and reactive import and export energy data.

Its Platinum functionality extends beyond energy registers to include M-Bus communication, four configurable inputs/outputs, up to four tariffs, timestamped events, maximum and minimum demand, eight-channel load profiles and harmonic measurement up to the 16th harmonic. This combination makes the A42 553-120 particularly suitable for detailed stationary infrastructure monitoring where energy consumption, power quality and historical operating data need to be collected through a central metering system.

Typical Applications

• Stationary 16.7 Hz railway infrastructure.
• Railway yards and electrical distribution systems.
• Railway workshops and maintenance facilities.
• Energy feeds for parked locomotives and railway vehicles.
• Single-phase CT/VT-connected submetering.
• Automatic meter-reading systems using M-Bus.
• Building and infrastructure energy-management systems.
• Applications requiring active and reactive import/export measurement.
• Installations requiring advanced load profiling and demand monitoring.
• Power-quality monitoring using harmonics and THD measurements.