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  • Challenges


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  • Answers






The A1120/A1140 provides a comprehensive and secure tariff structure and security and is suitable for commercial and light industrial CT or direct connected applications.  The A1140 offers additional load profiling.

Communications are provided via the optical (IEC 62056-21) port and are supported by data stream mode, allowing fast reading of meter data. The A1140 permits up to one channel of 90 days load profile data to be collected in less than 30 seconds. An RJ11 socket provides optional serial communications allowing remote access to the same meter data. This port can be multi-dropped, allowing up to 10 meters to be accessed from a single communications device. As a further option, a pulsed output can be transmitted via the meter’s auxiliary terminals.

The meter display has large characters that can be viewed from a wide angle.

Power Master Unit software provides a user friendly WindowsTM graphical interface for programming the meter and reading meter data. 




  • Accuracy - kWh Class 1 or Class 2
                - kvarh Class 2 or Class 3
  • Modular designed communications
  • Comprehensive tariff structure
  • Instrumentation
  • Large digit (9.8mm) display
  • IEC 62056-21 communications port
  • Internal clock with battery back-up
  • 15 year product life
  • Extensive security data
  • High security, compact design
  • 12kV impulse withstand
  • Double insulated, polycarbonate case
  • Compact design
  • IP53 in accordance with IEC 60529:1989


  • kWh export, kvarh and kVA
  • CT or Direct connected
  • Serial communications
  • 300 Days of Load profiling (A1140)
  • Read without power (using replaceable battery)
  • English or OBIS display descriptors
  • Terminal cover removal detection switch
  • Main cover removal detection or CT ratio programming switch
  • SO pulsed output (IEC 62053-31)
  • Terminal cover with cut-out
Tariff Structure

8          Time-of-use (TOU) registers
4          Maximum demand registers
48        Switching times
12        Seasons
24        Change of season dates
32        Exclusion dates
13        End of billing dates

Independent day of week control
Daylight saving
Deferred tariff

Documents and Downloads


A1120/40 Specification SheetData sheetEnglish296.97 KBDownload