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Electricity Meter B24, Three phase meter, 6 A
ABB B24-212-100

Electricity Meter B24, Three phase meter, 6 A

Product code: 2CMA100180R1000
Current Transformer connection (6A) three phase meter which is suitable for use with the ABB KNX meter interface ZS/S 1.1.
Price (Excluding VAT)


The B series EQ meter is a three phase meter, is mounted on DIN rail and suitable for installation in distribution boards and small enclosures such as consumer units.

The B series are suitable in applications where there is a need for reliable energy measurements and where space is limited.

General features

Navigating the meter is easily done via the push-buttons below the display. To configure the meter settings, the set button must be accessed and this button is
protected against unauthorized use when the transparent lid on the front of the meter is closed and sealed. The power consumption of the meter is very low, less than 0.8 VA.


Data from the B series meters can be collected via pulse output or serial communication. The pulse output is a solid state relay that generates pulses proportionally to the measured energy. The meters are also equipped with built-in serial communication interface for Modbus RTU (RS-485) and can also be set to
communicate over the new EQ bus with the new gateway G13. All meters in the B series come with an infrared port for communication with an external Serial Communication Adapter (SCA) such as the KNX adapter.


The B series meters support reading of instrument values.
A large number of electrical properties can be read including: 

  • Active power
  • Apparent power
  • Reactive power
  • Current
  • Voltage
  • Frequency

Inputs and outputs

The B series support two inputs and two outputs in a fixed configuration. Inputs can be used for counting pulses from e.g. a water meter, or reading status from external devices. Outputs can be used as pulse outputs or controlling external apparatus like a contactor or an alarm (connected via an external relay).


The B series meters are type approved according to IEC and they are both type approved and verified according to MID. MID is the Measuring Instruments Directive 2004/22/EC from the European Commission. MID type approval and verification is mandatory for meters in billing applications within EU and EEA. The type approval is according to standards that covers all relevant technical aspects of the meter. These include climate conditions, electromagnetic compatibility (EMC), electrical requirements, mechanical requirements and accuracy.

Technical Details


Voltage/current inputs 

  • Nominal voltage: 3 x 230/400 V AC
  • Voltage range: 3 x 220-240 VAC (-20% - +15%)  
  • Power dissipation voltage circuits: 1.6 VA (0,7 W) total 
  • Power dissipation current circuits: 0.007 VA (0.007 W) per phase at 230 V AC and Ib 
  • Rated current In: 1A
  • Transitional current Itr: 0.05 A
  • Maximum current Imax: 6A
  • Minimum current Imin: 0.02 A 
  • Starting current Ist: <1mA 
  • Terminal wire area: 0.5 - 10mm2
  • Recommended tightening torque: 1.5 Nm 


  • Terminal wire area: 0.5 - 1 mm2 
  • Recommended tightening torque: 0.25 Nm 

Pulse indicator (LED)

  • Pulse frequency: 5000 imp/kWh 
  • Pulse length: 40 ms 

General data

  • Frequency: 50or60Hz ±5%
  • Accuracy Class: B (Cl. 1) or C (Cl. 0,5 S) and Reactive Cl. 2 
  • Active energy: 0.5%, 1%
  • Display of energy: 7 digit LCD 


  • Operating temperature: -40°C - +70°C
  • Storage temperature: -40°C - +85°C
  • Humidity: 75% yearly average, 95% on 30 days/year
  • Resistance to fire and heat: Terminal 960 °C, cover 650°C (IEC 60695-2-1)
  • Resistance to water and dust: IP20 on terminal block without protective enclosure and IP51 in protective enclosure, according to IEC 60529. 
  • Mechanical environment: Class M2 in accordance with the Measuring Instrument Directive (MID). (2004/22/EC).
  • Electromagnetic environment: Class E2 in accordance with the Measuring Instrument Directive (MID), (2004/22/EC). 


  • Current: 2-100mA
  • Voltage: 5 - 240 V AC/DC. For meters with only 1 output 5 - 40 VDC. 
  • Pulse output frequency: Programmable: 1 - 999999 imp/kWh
  • Pulse length: Programmable: 10 - 990 ms
  • Terminal wire area: 0.5-1mm2
  • Recommended tightening torque: 0.25 Nm 


  • Voltage: 0-240VAC/DC 
  • OFF: 0-12VAC/DC 
  • ON: 57-240VAC/24-240VDC 
  • Min. pulse length: 30 ms 
  • Terminal wire area: 0.5-1mm2 
  • Recommended tightening torque: 0.25 Nm 

EMC compatibility

  • Impulse voltage test: 6 kV 1.2/50μs (IEC 60060-1)
  • Surge voltage test: 4 kV 1.2/50μs (IEC 61000-4-5)
  • Fast transient burst test: 4kV (IEC 61000-4-4)
  • Immunity to electromagnetic HF-fields: 80 MHz - 2 GHz (IEC 61000-4-6)
  • Immunity to conducted disturbance: 150kHz - 80MHz (IEC 61000-4-6)
  • Immunity to disturbance with harmonics: 2kHz - 150kHz
  • Radio frequency emission: EN 55022, class B (CISPR22)
  • Electrostatic discharge: 15 kV (IEC 61000-4-2)
  • Standards: IEC 62052-11, IEC 62053-21 class 1 & 2, IEC 62053-22 class 0,5 S, IEC 62053-23 class 2, IEC 62054-21, GB/T 17215.211-2006, GB/T 17215.312-2008 class 1 & 2, GB/T 17215.322-2008 class 0,5 S, GB 4208-2008, EN 50470-1, EN 50470-3 category A, B & C 


  • Material: Polycarbonate in transparent front glass. Glass reinforced polycarbonate in bottom case and upper case. Polycarbonate in terminal cover. 


  • Width: 70mm
  • Height: 97mm
  • Depth: 65mm
  • DIN Modules: 4



Technology Standard Electrics
Brand ABB
Mounting DIN Rail
Operating voltage 230VAC
IP rating IP20
Mounting Width 4MW

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