Surge Protectors
FAQs
An Ethernet surge protector safeguards connected network devices, such as switches, routers, IP cameras, and access points, from voltage spikes, lightning strikes, or power surges transmitted via Ethernet cables. It acts as a protective barrier, diverting excessive electrical energy safely to ground before it reaches sensitive network ports. These protectors are essential in outdoor, industrial, and PoE network installations, where long cable runs or exposed connections increase the risk of surge damage.
Power surges can travel through Ethernet and PoE cabling and cause serious damage to connected devices. Installing Ethernet surge protectors helps:
- Prevent equipment failure from voltage spikes caused by lightning or electrical interference.
- Protect valuable hardware such as IP cameras, wireless access points, and switches.
- Improve system reliability and reduce downtime in critical communication or security networks.
- Comply with safety standards in industrial or outdoor network installations.
In short, surge protectors are a low cost insurance against expensive network repairs or replacements.
When selecting a surge protector, consider the following:
- Data speed compatibility, ensure it supports your network speed (Fast Ethernet, Gigabit, or 10G).
- PoE capability, if you use Power over Ethernet devices, select a PoE compatible surge protector that passes both power and data.
- Mounting type, options include DIN rail, wall-mount, or inline models depending on your setup.
- Environment, for outdoor or harsh installations, choose weatherproof, IP rated models.
- Grounding, proper earthing is essential for the surge protector to function effectively.
Surge protectors should be installed at both ends of the Ethernet cable — near the device (e.g. camera, access point) and at the network equipment side (switch or patch panel). Typical installation points include:
- Between outdoor network devices and indoor equipment.
- At the entry point of external cables to a building.
- On long Ethernet runs or exposed cables.
This dual end protection ensures that both connected devices remain safe from transient voltage events.