Maximum discharge current (8/20μs): 40kA per phase,Nominal discharge current (8/20μs): 20kA per phase,TNS, TNC, TT and IT networks,Un(L-N/L-L): 48V, 60V, 120/208V, 230/400V, 277/480V,DIN-rail mountable, plug-in format,Visual and remote end of life indicators, Reversible chassis to allow cable entry from above or below, Mechanically coded cartridges to avoid cartridge replacement errors, Multidischarge technology. 400/690V & higher.