Phoenix Contact 3213955 The installation requires a protective conductor terminal block with specific ratings and connections. The terminal block is rated for 400V nominal voltage and can handle a maximum current of 24A. Two types of push-in connections are available, one with a rated cross-section of 2.5mm2 and another with a range of cross-sections from 0.14mm2 to 4mm2. Both types share the same push-in connection method and come in different mounting types (NS35/7.5 and NS35/15) and colors, all being gray in color.