Data Line and Antenna Line Protection

Data transmission networks and antenna lines are particularly exposed to surges because they run between facilities distributed over a large area, often in exposed locations. The consequence of damage is not only the cost of replacing equipment-a lost link also means loss of diagnostic data and surveillance video, and therefore loss of control over the facility. DT-LAN-CAT.6+ is intended for protecting copper Ethernet lines: it is a Class EA device corresponding to CAT6A, suitable for Gigabit Ethernet with throughput up to 10 Gb/s, as well as legacy Token Ring, FDDI, CDDI, ISDN and DS1 technologies. It supports power over twisted pair in the PoE++ standard, also known as 4PPoE, in Mode A and Mode B, allowing cameras and access points powered directly from the transmission cable to be protected. It is designed as an inline RJ45 plug with a separate grounding conductor and a grounding foot for an NS 35 DIN rail, so it requires no modification of existing sockets.

The PP-RJ-SCC-F patch panel combines line distribution and protection: it has RJ45 sockets routed to Push-in DIN-rail terminal blocks, supports CAT5e at 10, 100 and 1000 Mbit/s, and is mounted on a DIN-rail adapter with IP20 protection. It includes a shield connection with mechanical strain relief and shield-current monitoring, making it possible to detect incorrect grounding before it causes transmission interference.

Coaxial signal interfaces, especially antenna lines in radio systems, are protected by the CN-LAMBDA/4-2.25-BB adapter. It uses quarter-wave Lambda technology, which diverts surge energy without introducing attenuation in the useful frequency band. It is designed as an N-connector female-to-female coupler, enabling installation in an existing line without modifying the cabling.

Datasheet parameters

• DT-LAN-CAT.6+ (2881007): In (8/20 µs) conductor-to-ground 2 kA per conductor, Iimp (10/350 µs) 1 kA, ITotal (8/20 µs) 10 kA; Up ≤ 9 V conductor-to-conductor and ≤ 900 V conductor-to-ground; response time ≤ 1 ns conductor-to-conductor and ≤ 100 ns conductor-to-ground; insertion loss ≤ 1 dB up to 250 MHz; −40…+70 °C, IP20.
• PP-RJ-SCC-F (2703022): PoE according to IEEE 802.3bt Type 4, up to 60 W and 725 mA; shield-current monitoring with threshold ≥ 30 mA, accuracy ±5%, response time 3 s and yellow LED indication; transmission reach 100 m including patch cables; Push-in connection 0.2–1.5 mm² (AWG 26–16), stripping length 8 mm; −40…+75 °C, IP20.
• CN-LAMBDA/4-2.25-BB (2801057): frequency range 0.8–2.25 GHz, typical insertion loss 0.1 dB, typical VSWR 1.20 (max. 1.25) in a 50 Ω system; In (8/20 µs) 50 kA, Iimp (10/350 µs) 20 kA, ITotal (8/20 µs) 60 kA; Up conductor-to-ground ≤ 5 V at 1 kV / 500 A and ≤ 25 V at 10 kV / 5 kA; permissible RF power ≤ 500 W (4 kW pulse); 50 Ω N connector, tightening torque 1.5 Nm; −40…+85 °C, IP68.