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VI15x Voltage Modules

Measuring the 3 phase voltages adds some more advanced motor protection features to the UMC100, like underload, powerfactor, under-/overvoltage.

Simple 2-wire-connection to UMC100 allows flexible mounting.

ABB VI150 and VI155 expansion modules measure three-phase voltages and extend the UMC100 Universal Motor Controller with functions such as underload, power factor and under-/overvoltage protection.
- VI150 is for grounded networks
- VI155 is for grounded and ungrounded networks


  • Compact, 22.5 mm wide housing
  • Detects supply problems before motor starting
  • Protects equipment, prevents dry running pumps
  • Delivers base information for energy management


  • Measures three-phase voltages
  • Nominal motor voltages 150 … 690 V AC
  • Advanced motor protection functions
  • Extended motor diagnosis
  • Additional integrated relay output