A Coaxial Lightning Arrester is a surge protection device installed on coaxial cables to help protect connected RF equipment from lightning-induced surges and transient overvoltages.
A coaxial lightning arrester is installed in the RF transmission line between an antenna and connected equipment, such as a GPS receiver, radio communication system or monitoring antenna. It diverts surge energy toward a properly designed grounding system while allowing the intended RF signal to pass through.
For CCTV and security installations, it may be used to protect coaxial connections associated with radio links, GPS antennas and other RF-based monitoring equipment. It must match the cable type, connector, operating frequency and system impedance.
Key Specifications
Parameter
Typical specification
Product type
Coaxial RF Lightning Arrester
Impedance
50 Ω or 75 Ω, depending on application
Connector type
N-type, BNC, SMA or other compatible type
Frequency range
Model-dependent
Surge protection
Gas discharge tube (GDT) or equivalent technology
Installation
Inline or bulkhead mounting
Grounding
Dedicated grounding connection
Housing
Metal, with weather protection as required
Application
RF, antenna and communication systems
Specifications vary by model. Select the arrester based on the actual coaxial cable and connected equipment.
Common Uses
GPS antenna and monitoring systems.
RF communication antennas and radio equipment.
Coaxial antenna feeder cables.
Outdoor wireless communication installations.
Telemetry and industrial monitoring systems.
RF equipment exposed to lightning-induced surges.