Phoenix Contact 3031429 The terminal block features a double-level spring-cage design with a nominal voltage of 500 V and a maximum current rating of 30 A. The connection method is via a spring-cage configuration on both the first and second levels, allowing for various cross-sectional sizes between 0.08 mm2 and 6 mm2 to be accommodated. The terminal block can be mounted using two standard mounting types, NS35/7.5 and NS35/15, and has a gray color.