Product Catalogue

DDS238-2 SW single phase din rail type watt hour meter (D1203)

DDS238-2 SW single phase din rail type watt hour meter (D1203)


Display mode:

Display format:
①XXXXXX.X(6-digit integer + 1-digit decimal)

Designed to measure single phase two wire AC active energy. Suitable for users of secondary circuits with flat rate tariff or single phase electric equipment with narrow interior space. Utilizing advanced SMT (Surface mounting technology) process and long-life components of international famous brands, the meter conforms to the international standard of IEC62053-21.

1. By pressing the button, display with backlighting available
2. Active energy is measured bi-directionally and total, forward and reverse electricity and interval electricity can be showed.
3. Realtime current, voltage, active power, reactive power, power factors and frequency measurement and display.
4. Continuous data saving after power failure and lasting for more than 15 years.
5. Interval electric quantity display and reset mode available.
6. Passive pulse output, conform to DIN43864 standard
7. Width of the meter is only 36mm. 35mm DIN-rail installation. Similar shape as 2P breaker.

Technical Data

Rate voltage 110V,120V,220V,230V,240V
Working voltage range 0.8~1.2Un
Rate Current 5(65)A, 10(100)A, or special required
Frequency 50Hz or 60Hz +10%
Connection mode Direct type
Display LCD
Accuracy class 1.0
Power consumption < 1W/10VA
Start current 0.004Ib
AC voltage withstand 4000V/25mA for 60 sec
Impulse Voltage 6kV 1.2μs waveform
Over current withstand 30Imax for 0.01s
IP grade IP20
Constant 1000~2000 imp/kWh
Pulse output Passive pulse, pulse width is 80+5 ms 5~27VDC , Max current input 27mA DC
Executive standard DIN 43880,IEC62053-21,IEC62052-11
Outline dimension LXMXH 100x36x65mm
Weight Approx 0.13kg


Voltage 0.5%
Current 0.5%
Frequency 0.5%
Power Factor 1%
Active power ±1%
Reactive Power ±2%
Active Energy (kWh) Class 1.0


Operating temperature -25℃~55℃
Storage temperature -40℃~80℃
Reference temperature 23℃+2℃
Relative humidity 0 to 95% , non-condensing
Altitude Up to 2500m
Warm up time 10s
Mechanical Environment M1
Electromagnetic Environment E2
Degree of pollution 2

Wire connection

  • DDS238 single phase static watt hour meter(E1203A/E1203L/E1206)
  • DDS238 single phase static watt hour meter(E1203A/E1203L/E1206)

Outline dimension

DDS238-2 SW single phase din rail type watt hour meter (D1203)

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