The device protects all pairs of wires in 4-pair cable. For each pair eliminates overvoltages between wires carrying away the discharge current to the ground by PE wire. The AXON-NET/PROF is a reinforced model of the AXON-NET popular device.
Metal casing guarantees more resistance to mechanical damages and ensures good shielding of the entire protective system. Using the shielded RJ-45 sockets and FTP cable you can ensure shield continuity. The socket shield is connected to the ground.