Surge arresters for coaxial cables are devices of protection of electrical systems against atmospheric discharges coming from the transmission or reception antennas.

Belco's offer of overvoltage and lightning protection for coaxial cables includes "GAS Tube" technology arresters, special products for military applications and DC filters for high currents.
The "GAS Tube" technology arresters proposed by Belco are produced by NexTek, a US company that has been manufacturing professional electronic products since 1986, a guarantee of quality and performance for decades in the Telecom, Wireless, SCADA/Industrial Monitoring and Control, Fixed and Mobile Military Applications sectors , GPS/Timing Installations, Aerospace, Energy and Natural Resources, Cable TV, CCTV, Satellite TV.