Description
Interface protection system units compliant with VDE-AR-N 4105, VDE-AR-N 4110, VDE-AR-N 4120 and VDE V 0126-1-1 for single-phase and three-phase system with and without low voltage neutral, dual threshold minimum and maximum voltage and frequency protection, R.O.C.O.F. and Vector shift. Modular type (4U)




