Gensets Control and Protection Module


Generator Automatic Control and Protection Module

The GCU-100 is a programmable Automatic Control and Protection Module suitable for all makes and types of generators. The GCU-100 is equipped with graphical warning signals and three separate LED displays for real time 3 phase voltage, AC current, generator frequency, battery volt, and running hours. The GCU-100 allows customization of setting values for specific generator protections and settings and also allows remote communication and monitoring.



Rotating Image


Optional USB / RS485 / Ethernet remote communication functions

Optional :
USB / RS485 / Ethernet remote communication functions
(click to see enlarge picture)

  • Micro-Processor auto control & protection
  • Three sets of high illuminating LED display suitable for indoor and outdoor use
  • Full function modularized design for easy installation
  • All functions setting can be done directly on GCU-100 no need for PC connection *
  • All settings are recorded into the internal (EEPROM) and protected from erasure even without battery
  • Optional USB / RS485 / Ethernet remote communication functions (see picture on right)
  • Free APP for monitor and operate your ATS & genset directly from your smart phone
  • Easy to understand graphical warning signals
  • Din rail terminal for easy installation
  • IP65 waterproof front panel
  • User can program, change and cancel protection and warning settings according to the requirement.


Power Input Voltage 9-35 Vdc (12V , 24V)
Sensing Input Voltage 15-510 Vac
Frequency 50/60 Hz
Power Dissipation Max. 5 watts
MPUSignal Input Voltage +/-2 to +/-70 Vac
Frequency 100 Hz Min. 10K Hz Max.
CT Specification Burden Above 2.5 VA
CT Secondary Ratio 5A
Protection & Alarm Status
  • Engine Start Failure
  • Emergency Stop Activated
  • High Engine Temperature
  • Low Engine Oil Pressure
  • Engine Over & Under Speed
  • Abnormal AC Volt
  • Generator Over Load
  • Low Fuel Level
  • Charge Motor Failure
  • Abnormal DC Volt
  • Scheduled Maintenance Warning
  • Free Programmable warning
Panel Display
  • Fixed or Circulating Full Phase Voltage, Current and Frequency
  • Engine Operation Hours
  • DC Voltage (Battery)
  • Delay Countdown Display
Environment Operating Temperature -20 to +70 °C
Relative Humidity Max. 90%
Max. Vibration 5-25 Hz , +/-1.6 mm , 25-100 Hz , a=4g
Panel Cut-Out 137.0 x 137.0 +/-0.5 mm
Dimension 147.8 (L) x 147.8 (W) x 62.3 (H) mm
Weight 604 g +/-2%

Diagram and Dimensions

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