Designed to protect
outdoor Power-Over- Ethernet (POE) data/communication lines in
local and wide area networks up to 1000Base-T transmission
speeds. All eight pins are protected by a carefully designed
circuit that isolates data from Ethernet power lines. The
ultra-sharp clamping response of the CITEL model C2MJ8- 505-RJ
permanently eliminates transients from your POE applications.
The weatherized enclosure is designed for outdoor applications.
A protection system with a poor ground is the same as having no
protection at all. Too many times proper grounding has been
overlooked. Recommended grounds are the utility company ground,
a ground rod, well casings, and cold water pipes that are of
continuous metal. A note of caution, sometimes the metal-cold
water pipes are repaired and/or extended PVC piping. The
introduction of PVC material renders the cold water pipe ground
unacceptable. A thorough investigation of a cold water pipe
ground is important since the PVC repairs or extensions may be
covered by drywall.
Grounds that are unacceptable include sprinkler pipes, PVC pipe,
conduit, buried wire and any ground that cannot be verified.
Bonding ensures the most effective ground. Bonding ties all of
the grounds in the building together electrically. If there is
a rise in ground potential and all of the grounds are bonded, no
damage will occur since it is differential voltage that causes
It is absolutely necessary to make sure that the ground used for
the AC power is the same as the ground used for the data-line
surge protectors. A common ground reference must be achieved
for all equipment. All ground wires must be as short as
possible and it is imperative that the ground wire not be
coiled nor looped. The ground wire must be as straight as
possible, remember that it must be the path of least
resistance. Regarding the diameter of the ground wire, the
larger the better. The larger the diameter, the better
electrical conductivity. Finally, the earth ground resistance
on which the whole grounding system relies, must be less than 5
Lines that typically need protection include incoming central
office trunks, lines to off-premise sites, local area networks
and campus environments with multiple buildings. A good rule of
thumb to remember is that all lines entering or exiting a
building need protection. Both ends of the cables between
buildings must be protected!