Phoenix Contact 3046388 To determine the current and voltage at a specific terminal block, it's essential to consider the type of plug used. The nominal voltage is 400V, while the thermal continuous current rating ranges from 20A. The connection method is screw-based, with a rated cross-sectional area of 2.5mm². Additionally, the actual cross-sectional area can vary between 0.14mm² and 4mm², depending on the specific application. Furthermore, mounting options include NS 35/7,5 and NS 35/15, while the terminal block itself is identified by a gray color.