Phoenix Contact 3245066 To assemble the neutral busbar securely, supports must be installed at the start and end of each terminal strip as well as every 20 cm on longer strips. When disconnecting the neutral conductor, use a maximum voltage of 400 V and a maximum current of 110 A for standard connections. For special or hybrid connections, follow the specific requirements, including the right-hand side connection configuration and various rated cross-sections (0.75 mm2-35 mm2) to be mounted using type NS 35/7.5 or NS 35/15 mounting types, with a recommended color of blue.