Applications

 Wireless Access Points, Servers & Outdoor Routers

 IP, Network or Web Cameras

 VoIP Telephone

 10/100 Base-T Networks

Features

 Individual protection for all 8 wires

 Three-Stage protection

 Superior to diode or TVS only based designs

 Weatherproof ABS enclosure with removable

screw terminal blocks

 802.3af Modes A and B Power-Over-Ethernet

Description

The AL-CAT5HPWT is a high performance 3-stage weatherproof protector that provides superior protection 10/100

Base-T networks. This model is fully compatible with industry-standard Power-over-Ethernet (PoE) devices and

provides individual protection to both the Ethernet data pairs as well as the PoE DC power feeds. The unit

supports both modes A and B of the 802.3af standard for of supplying DC power.

The first stage is comprised of a differential gas discharge tube. Stage two is a pair of current limiting series

resistors and the final stage is a low capacitance diode array. The second stage series resistance limits the power

dissipation of the fast diode clamp array in the third stage. This allows time for the slower but higher power gas

tubes to flash over. The diode array clamps the leading edge of fast transients to safe levels until the high power

gas tubes turn on. This eliminates the damaging leading edge spike that single stage gas tube protectors let leak

through. The diode array’s low capacitance assures that the suppressor will not degrade the high-speed signals.

The 3-stage design can handle higher-level transients than a protector that

uses only diodes. The design utilizes Thyristor diode technology which has

superior power handling capability compared to TVS or Avalanche diode based

designs.

Failsafe Feature

The AL- CAT5HPWT series is designed to convert into a failsafe mode in the

rare case of a catastrophic surge or lightning event. For this mode, the

resistors in the second stage will fuse and portions of the diode array will

short. This effectively disconnects the line from sensitive equipment thus

limiting damage. The units are factory repairable.