UMD 704 – Measurement technology for the top-hat rail

UMD 704

The UMD 704 is a compact power quality meter for online measurements for DIN rail mounting. It measures 4-phase current and voltage with up to 3 tariffs in 4-quadrant operation and the work in class 0.2s, as well as all common mains quantities, e.g. harmonics up to the 50th harmonic. Digital inputs/outputs and a serial RS485 interface are integrated. The UMD 704 can also be equipped with an M-Bus interface. As current transformers, we recommend JS or CTB current transformers in the 100 mA version.


The device is used for continuous monitoring of the voltage quality in data centres and in building automation as well as for consumption recording in ISO 50001 applications.


  • Product Icon Inputs 4U 4I
  • Product Icon Measurement U I P Q
  • Product Icon Pf Cos Thd
  • Product Icon Wh Varh
  • Product Icon Standards IEC 61557-12
  • Product Icon Harmonics 50
  • Product Icon Sampling 25,6 kHz
  • Product Icon RS485
  • Product Icon Modbus
  • Product Icon Standards class 0.5S IEC 62053-22
  • Product Icon Outputs 1x Pulse
  • Product Icon Current Input X 100mA
  • Product Icon ETH
  • Product Icon Inputs 2x Digi
  • Product Icon NTP
  • Product Icon Webserver


  • Product Icon Outputs 1x Relay
  • Product Icon Supply 12v 24v 230v

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