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Ultracapacitor-based buffering units

ABB's ultra-capacitor based CP-B buffer modules serve to ensure a short-term uninterrupted power supply system with a voltage of 24 V DC by buffering the load in case of power loss.

The buffer modules feature a new technology of  energy storage by using ultra-capacitors; which obviate the need for maintenance and exempt deep discharge in comparison to batteries.

The energy storage can be expanded with additional extension modules for longer buffering times.


  • Maintenance-free
  • Latest ultracapacitor technology
  • No deep discharge
  • Temperature resistant


  • Rated input voltage 24 V DC
  • Rated currents 3 A DC, 10 A DC, 20 A DC
  • Expandable with CP-B EXT.2 module
  • LEDs for status indication
  • High efficiency of more than 90%