E. Dold & Söhne GmbH & Co. KG

Tel.: +49 7723 654-0
E-Mail: dold-relays@dold.com

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UG 9431

DC voltage relay, for Modbus

UG 9431


Nominal voltage

Auxiliary voltage


  • 0069324
  • UG9431.12PM DC20-1000V UH=DC24V
The DC volage relay UG 9431 of the VARIMETER PRO series allows easy parameter setting,... more

Product description

The DC volage relay UG 9431 of the VARIMETER PRO series allows easy parameter setting, monitoring and diagnosis via a Modbus RTU interface. The measuring relay monitors DC networks for overvoltages and undervoltages as well as voltage range violations. Early detection of impending failtures and preventive maintenance prevent costly damage and as a user you benefit from the operational safety and high availability of your system.

Technical specifications

Width: 22,5 mm
Operate delay: Yes
1- / 3-phase: 1
Nominal voltage max.: DC 1000 V
Auxiliary voltage: DC
Output contacts: 2 C/O contacts
Enclosure design: Switch cabinet
Type: UG 9431


  • Simple parameterization, monitoring and diagnosis
  • Compact design
  • Large measuring range DC 20 ... 1000 V
  • Min-, Max-value or window monitoring
  • Early detection of irregularities
  • Increases plant availability and productivity
  • Differentiated error messages
  • Space and cost saving
  • Reduced wiring
  • Lower investment, operating and maintenance costs


  • Multifunctional measuring relay acc. to IEC/EN 60255-1
  • With galvanic separated Modbus RTU interface
  • For DC monitoring
  • Start up time delay, response delay, delay on de-energisation
  • Adjustable hysteresis 0.2 ... 50 % of the response value
  • Error memory
  • 2 changeover contacts
  • Relay function energized / de- energized on trip parameterizable
  • Width 22.5 mm