Phoenix Contact 3245037 To securely fix the neutral busbar in place, support brackets must be placed at the start and end of each terminal strip as well as every 20 cm on longer strips, ensuring a stable connection. For neutral conductor disconnection, reference is made to specific products available at Phoenix Contactcontact.com, which include screws for a secure connection and support brackets rated for cross-sections between 0.2 mm² to 10 mm², mounted using type NS35/7.5 or NS35/15, with a nominal voltage of 400 V and current of 41 A, and a blue color.