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NAS network and system protection

The compact, plug-and-play network and system protection combinations from Eaton’s Moeller series are suitable for systems from 30 kVA to 130 kVA and come in a plastic housing with IP65 protection. Both ranges meet the requirements of VDE-AR-N 4105:2018-11. The devices consist of one or two contactors connected in series, which are controlled via an NA protection relay and come pre-wired and mounted in an enclosure. The network and system protection combinations are intended for installation between the inverter and the mains connection.

NAS network and system protection
Degree of protection:
Requirements met:
VDE-AR-N 4105:2018-11
Total switch-off time:
< 150 ms

Core features

  • The contactors have a low withstand rating and consume little energy
  • Undervoltage/overvoltage monitoring
  • Underfrequency/overfrequency monitoring
  • Power quality monitoring (10-minute mean value)
  • Vector shift monitoring can be added
  • Single-fault proof
  • Default settings according to VDE-AR-N 4105:2018-11, values can be changed
  • Alarm counter, alarm total time
  • Sealing option and code protection
  • 4-pole contactors (3+N phases)
  • PE terminals
  • Switch position indicator

Safe and easy mounting

The combinations are designed for wall mounting, which ensures easy installation. The DILMP contactors are particularly efficient, thanks to their electromagnetic drive with a withstand rating of only 2.1 W.
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