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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.
The contactors have a low withstand rating and consume little energy
Power quality monitoring (10-minute mean value)
Vector shift monitoring can be added
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)
Switch position indicator
Either a single contactor or two contactors connected in series
The NAS consists of either one or two (coupler switch) contactors connected in series. If only one coupler switch is used, the control cable must switch off in the event of a fault. No UPS or buffer storage is required when using the NAS.
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.
Proven circuit breakers for large installations
Eaton offers 3- and 4-pole tie breakers with remote operator - both circuit breakers and switch-disconnectors are available (20 to 1,250 A). In addition, an undervoltage release, an auxiliary contactor and a NA protection relay are also required. With a short-circuit breaking capacity of 50 kA, this combination can be used to supply mains with up to 2 x 1,000 kVA of transformer power.
NAS network and system protection models & specifications
Click here for the different models from our NAS network and system protection
Eaton’s mission is to improve the quality of life and the environment through the use of power management technologies and services. We provide sustainable solutions that help our customers effectively manage electrical, hydraulic, and mechanical power – more safely, more efficiently, and more reliably. Eaton’s 2020 revenues were $17.9 billion, and we sell products to customers in more than 175 countries.