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Elvaco deliver high-quality meters for electricity, water and heat metering. We collaborate with some of the largest actors on the market to be able to offer flexible and cost-effective solutions that meet all our customers' needs.

ABB B21 - DIN mounted electricity meter

ABB B21 is a single phase compact electricity meter. It is equipped with a backlit display that provides information about active energy, current, voltage, power factor and frequency. By using ABB B21 together with Elvaco's external Meter Connectivity Modules CMeX20 or CMeX20w, meter data can be converted to M-Bus/Wireless M-Bus and delivered to a receiving system.
  • Total: 2
  • Total: 2


Mounted on DIN rail (DIN 50022) 35 mm

Electrical connections

Electrical characteristics

Unit loads:
1T/1.5 mA

Environmental specifications

Temperature sensor, margin of error

Humidity sensor, margin of error

User interface


Wireless M-Bus

Integrated M-Bus Master

Wireless M-Bus Receiver

M-Bus slave interface


Data storage (examples)

Mobile Network

Fixed Network (Ethernet)



Connections and Interfaces


For downloads, please visit our support site at: https://support.elvaco.com

Our website has gathered all resources you need to update, tune and troubleshoot your installations, such as:

  • Latest software versions
  • FAQs
  • Guides
  • In-depth technical information
  • Support forum