Multi Line TWR Surge Protector Replacement Board

5.00 out of 5



Multi Line TWR Surge Protector Replacement Board



Multi Line TWR Surge Protector Replacement Board

Outdoor Tower/Wall Mount 8 Circuit Ethernet Surge Protector Module

This product fits into the TWR protector that will protect up to 8 CAT5/c circuits with one device.

This multi line protector module is designed for outdoor use.

This device is designed to protect equipment such as APs and SMs installed at NOCs or tower sites where a number of devices are colocated.

The HV version of this device has a higher ethernet breakdown voltage for high RF exposure and POE situations. The HV is required for POE powered devices. LV Voltage is by special order only.  HV version is the default product.

Grounded and bonded shielded RJ45 jacks provide grounds to shielded plugs on the J version. The P version (special order only) has 110 style punch down connections.

Replacement module for Multi Circuit Suppressor

Read more at:

Click on the "How to Buy" button (at top of page) for our distributor list. You will receive a better price when buying from our distributors. Frequently they will have stock when this site shows low or no stock. We are also known as: Wireless Beehive, Wireless Beehive Manufacturing and sometimes Beehive Wireless. See us at at Animal Farm during WISPAmerica

Tech Spec

Weight 5.00 lbs
Dimensions 5 × 1 in

Electrical Specifications

1.8dB @ 1000Mhz
NEXT Increase:
Return Loss Decrease:
Clamping Voltage:
Standard Model – 3.8V Long 3.0 V Transverse
Clamping Voltage:
HV Model – 69 Volts

Mechanical Specifications

1 Inches
5 Inches
Net Weight:
5 oz

Features & Applications


Compatible with all types of POE (HV Version)
110 Punch Downs or Shielded RJ45 Jacks
Gas Discharge Tube Protection
Bi-Directional TVS provides full protection even during a destructive surge
Silicon Avalanche Diode Protection
No air Back-Up-Gap (BUG) means extra long life and resistance to insect contamination
Ultra Low Capacitance Design – Zero Bandwidth Reduction Internal or External Ground Connection
High-Speed Ethernet Surge Suppression Design
HV version with higher clamp voltages for strong RF immunity
Ultra fast suppression – typically less than 1.0ps from 0 Volts to BV min


Installed at large colocation sites such as a NOC
Prevent damage to the AP and the other NOC equipment
HV Version Suitable for sites with high power (100 watts and over) RF exposure to the CAT5.
GigE-TWR-J = Low Voltage Shielded RJ45 Jacks
GigE-TWR-J-HV = High Voltage Shielded RJ45 Jacks
GigE-TWR-P = Low Voltage 110 Punch Downs
GigE-TWR-P-HV = High Voltage 110 Punch Downs

Downloads & Links

Application Chart

Application Data

Test Data


Terms, Conditions and Warranty

2 reviews for Multi Line TWR Surge Protector Replacement Board

  1. 5 out of 5

    Salvadore Bannock

    I installed one of these on the tower and exactly one week later we got hit. One of my competitors on the same tower was totally wiped out. Lost all his radios. I did not lose a single radio. All the surge suppressor modules inside this box were blown up completely so we had to use couplers to get the radios back on the air, but McCown sent out replacement modules overnight and we installed them a few days later. This unit saved us thousands. Good shit.

  2. 5 out of 5

    George Skorup

    From: George Skorup
    Sent: Monday, May 01, 2017 4:56 PM
    Subject: Re: [AFMUG] GIGE-APC Surge suppressors

    We either had a really bad power surge or a very close lightning strike at our NOC over the weekend. No visible signs of a direct strike to the tower. I’m leaning towards the power surge since other networked things in the office died, and our office telco/network closet is uplinked to the server room via a pair of fiber. Railroad stuff was all messed up at several crossings. And other businesses nearby lost various electronics as well.

    Two AF24’s and an AF5. GigE-APCs at the bottom weren’t burned up, but were obviously dead. The AF POE injectors all shut down when plugged into them. The GigE-SS’s on top apparently stopped the surge from hitting the radios. After I bypassed the GigE-APCs at the bottom, the ethernet links would only run at 100Mbps, plus errors. After bypassing the GigE-SS’s on top this morning, all three are running GigE again with no errors. So that saved a lot of work today.

    However, it wasn’t so good for the 5GHz 450i cluster at the top. Don’t know how, but one survived. We relied on the 450’s built-in suppression at the top. Didn’t happen. The GigE-APCs were all dead. So yeah, you should probably just run GigE-SS’s near a radio, even if it claims surge suppression is built in.

    The PacketFlux PowerInjector+Sync had two of the ports with visible damage on the board. Took out the SiteMonitor Base unit with it. Forrest, if you want these for failure analysis, just let me know. I’d be happy to send them to you. When I got the office, the green LED was flashing 2, and I believe port #2 was a damaged one. It also took out all four of those ports on the CCR1036.

    I’ve seen similar events over the years and this clearly looks like bottom up, i.e. utility surge. And of course the one thing I forgot after doing the generator and transfer switches…. the f’n whole panel surge suppressor. I would’ve moved the existing one over to the other panel, but I needed different breakers.

    Bottom line, use MTC surge suppressors top and bottom and your life will be better.*

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