Protect 4

High Power UPS System

160 – 1000 kVA
Input: 3-phase
Output: 3-phase

The Protect 4 is a highly reliable solution with a very long track record in system availability and use, providing safe and uninterrupted power back-up. It is a compact ready to install unit, with a maximum single unit capacity of up to 1000 kVA, ensuring the safe operation of your critical load. Protect4 is designed to meet the toughest application requirements and offers high reliability with efficient 12 pulse rectifier technology for sinusoidal input current and for reduced input current harmonic distortion (THDi). The Protect 4 can be used in parallel operation with up to 8 units. This increases the power capacity and allows for even greater safety via N+1 redundancy.



  • Optimum efficiency, even in partial load range
  • Fully loadable neutral conductor
  • Short circuit proof
  • Overload capacity available
  • Intelligent battery charging management
  • Integrated logbook function
  • Terminal emulation/VT100 via RS232
  • Internal redundancy
  • Integrated network interface incl. SNMP agent for network management (optional)
  • Remote servicing via modem
  • Redundant fans