Phoenix Contact 3213957 A terminal block designed for installation of protective conductors features a push-in connection system with ratings suitable for 400V nominal voltage and 24A nominal current. It comes in two sizes with different rated cross sections (2.5mm² to 4mm²) and is also available in a smaller version (1.5mm²) with similar sizing options, while its mounting type includes NS35/7.5 and NS35/15 configurations, typically marked by a gray color.