A buffer PSU is intended for an uninterrupted supply to devices requiring stabilised voltage of 12 V DC (+/-15%). The PSU provides voltage of U=13,8 V DC. Current efficiency:

  1. Output current 9x1A + 1A battery charge
  2. Output current 9×0,77A + 4A battery charge

Total device current + battery: 11A max. 

In case of power decay, a battery back-up is activated immediately. The PSU is constructed based on the switch mode PSU, with high energy efficiency. The PSU is housed in a metal enclosure (colour RAL 9003) which can accommodate a 17Ah/12V battery. A micro switch indicates door opening (front cover).


  • DC 13,8V/9A uninterruptible power supply
  • 9 outputs, protected with 1A glass fuses
  • fitting battery: 17Ah/12V
  • wide range of mains supply: 176÷264V
  • high efficiency 80%
  • battery charging and maintenance control
  • excessive discharging (UVP) protection
  • battery charging current 1A/4A changed with jumper
  • battery output full protection against short-circuit
  • and reverse polarity connection
  • LED indication
  • protections:
    • SCP short-circuit protection
    • OVP overvoltage protection
    • overvoltage protection
    • against sabotage
    • overload protection (OLP)
  • warranty – 2 year from the production date


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