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Technical features
B21 B23 B24
Voltage/current inputs
Nominal voltage 230 V AC 3x230/400 V AC
Voltage range 220...240 VAC (-20% - +15%) 3x220/380...240/415 VAC (-20% - +15%)
Power dissipation voltage circuits 1.1 VA (0.5 W) total at 230 V AC 1.7 VA (0.8 W) total at 230 V AC
Power dissipation current circuits 0.012 VA (0.012 W) at I and I b 0.007 VA (0.007 W) per phase at I and I b 0.0007 VA (0.0005 W) per phase at I and I n
ref
ref
ref
5 A -
Base current I b
- 1 A
Rated current I n
5 A -
Reference current I ref
0.5 A 0.05 A
Transitional current I tr
65 A 6 A
Maximum current I max 8
0.25 A 0.02 A
Minimum current I min
< 20 mA < 1 mA
Starting current I st
Terminal wire area 1 - 25 mm 2 0.5 - 10 mm 2
Recommended tightening torque 2 Nm 1.2 Nm
Communication
Terminal wire area 0.5 - 1 mm 2
Recommended tightening torque 0.25 Nm
Transformer ratios
Configurable current ratio (CT) - 1/9 - 9999/1
Pulse indicator (LED)
Pulse frequency 1000 imp/kWh 5000 imp/kWh
Pulse length 40 ms
General data
Frequency 50 or 60 Hz ± 5%
Accuracy Class B (Cl. 1) and Reactive Cl. 2 B (Cl. 1) or C (Cl. 0.5 S) and Reactive Cl. 2
Active energy 1% 0.5%, 1%
Display of energy 6 digit LCD 7 digit LCD
Environmental
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 IP20 on terminal block without protective enclosure and IP51 in protective enclosure, according to IEC 60529.
enclosure and IP51 in protective enclosure,
according to IEC 60529.
Mechanical environment Class M2 in accordance with the Measuring Class M2 in accordance with the Measuring Instrument Directive (MID). (2014/32/EU).
Instrument Directive (MID). (2014/32/EU).
Electromagnetic environment Class E2 in accordance with the Measuring Class E2 in accordance with the Measuring Instrument Directive (MID), (2014/32/EU).
Instrument Directive (MID), (2014/32/EU).