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Surge Protection for Field Devices: Comnet CLESP

Matt Golueke May 3, 2021 11:15 AM

Comnet CLESP Power Protection with Logo

A challenge to all integrators is applying appropriate surge protection to a security system. This applies to devices both inside and outside the building. In the video Below, Brad Castillo and Rick Bennett discuss the advantages of using field device surge protection >>


The ComNet™ CopperLine® CLESP provides highly effective voltage surge and transient protection for Ethernet-compatible equipment, including Ethernet switches, media converters, EoVDSL modems, ComNet CopperLine Ethernet over UTP transmission extenders, etc. The mating RJ-45 connector on the CLESP plugs directly into any 10/100/1000 BaseT Ethernet port, making the installation simple and quick. Protection is provided to IEC specification EN55024; Immunity Characteristics for Continuous and Transient, Conducted and Radiated Disturbances. Electrostatic discharge (ESD) protection is also provided.



  • Protection of Ethernet transmission equipment subjected to environments where potentially damaging voltage transients or high levels of electrical noise may be present
  • Long distance UTP cable runs
  • Ethernet Networks in electrically-noisy industrial environments
  • IP cameras and other network equipment operating in environments such as parking lots, warehouses, and perimeter surveillance applications where lightning or other damaging electrical disturbances may exist



  • Highly effective voltage surge and transient protection for Ethernet-compatible equipment
  • Small profile: RJ-45 connector-compatible plug-in module saves space in those installations where space may be at a premium
  • Simple and quick installation
  • Economical: Install on those selected Ethernet ports requiring surge and transient protection
  • Provides additional Ethernet port protection for IP cameras, DVRs, and NVRs
  • Fully Compatible with any 10/100/1000 BaseT Ethernet port
  • PoE Compatible: IEEE 802.3af and 802.3at compliant for PoE and PoE Plus
  • No additional ground cable required; Grounding tab is integral to the protector
  • Tested and certified to EN61000-4-5 and EN55024 surge standards
  • Designed and manufactured in the U.S.A.
  • Lifetime Warranty


Data Sheet

CLESP Data Sheet image


System Design Assistance >>



Topics: Technical - Simplified, Your Challenge, Our Solution, Security Camera, Surge Protection

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