Phoenix Contact 3040847 The terminal block should be disconnected first, as the maximum allowed load current must not exceed the total current of all connected conductors, which is also determined by the type of plug used. The specifications for this plug include a nominal voltage of 400V and a nominal current capacity of 20A. The connection method is spring-cage/plug-in, with rated cross sections ranging from 0.08 mm2 to 4 mm2 and mounting options including NS35/7.5 and NS35/15, all of which come in gray color.