Direct in Line Plug-inDIN-rail MountWall MountWaterproof BoxRack MountCustomize PDU  

Paperless Datasheet
Going green and protecting environment is manufacturers' responsibility. Each WatchfulEyE product has a link of downloading data sheet on its enclosure:

Model & Ordering Code

Model Ordering Code Surge Protection UPC/EAN Code
WTH-SG/RJ45-KH-C/24 US121181 24 Port (0) 811914031901
WTH-SG/RJ45-KH-C/16 US121182 16 Port (0) 811914031918
WTH-SG/RJ45-KH-C/12 US121187 12 Port (0) 811914031925
WTH-SG/RJ45-KH-C/8 US121183 8 Port (0) 811914031932
WTH-SG/RJ45-KH-C/4 US121186 4 Port (0) 811914031949
WTH-SG/RJ45-KH-C/2 US121189 2 Port (0) 811914031956
WTH-SG/RJ45-KH-C/1 US121188 1 Port (0) 811914031963

Certificates of Products - Page 01 - Back to TOP -

How to Name Ethernet PoE Series

UL file number: E346881
Data protectors, for indoor use, Model(s) WTH-SG/RJ45+
Data protectors, for outdoor use, Model(s) WTH-SG/RJ45-KE+, WTH-SG/RJ45-KG+
Data protectors, for rack mount use, Model(s) WTH-SG/RJ45-KH+/n (n=number of ports)

+ - May be followed by -A, -B, -C, -D, -E, -F, -G, -H, -I, -J, -K, -L, -M, -N or -O. - Page 02 - Back to TOP -

WTH­-SG/RJ45 Series surge protective devices are applied to surge protection for data communication systems.
WTH-SG/RJ45-KH-C Series is connected in series in CAT6 network cables, compatible with 10/100/1000/10000 (10G) Base-T Ethernet systems, protecting the equipment which are connected to the network (e.g. computers, routers, PoE devices, etc.) against damages by over-voltage surge.
(Standards compliance: IEC61643­-11, UL497B, IEEE 802.3af PoE/802.3 at PoE Plus)
WTH-SG/RJ45-KH-C Series Technical Data
Nominal operating voltage (Un) 2.8V(Ethernet)/48V(PoE)
Max. continuous operating voltage (UC) 3V(Ethernet)/60V(PoE)
Nominal Discharge Current (In @8/20μs) 3kA (line to line)
Max. Discharge Current (Imax @8/20μs) 20kA (line to GND/PE)
Voltage protection level (Up @line-line) 50V @ 3kV (1.2/50)
Voltage protection level (Up @line-GND/PE) 700/800V @ 3kV (1.2/50)
Max Watt 90W (PoE)
Data Rate 100/1000Mbps
Bandwidth (3db) per pair >250MHz
Insertion Loss <0.5dB @100MHz
Pairs Protected 1-2,3-6,4-5,7-8
Protective Element GDT, TVS
Voltage Breakdown Range, Vdc @ 100 V/s 2.4-188 (L-L) / 72-108(L-G)
Impulse Voltage Range,Vdc @ 100 V/µs <1000
Response Time (tA) <100ns (line-GND/PE), <1ns (line-line)
Connection mode RJ45 (1 to n Port)
Temperature Range - 40° to 176°F (-40° to 80°C)
Relative Humidity 0% to 95% noncondensing
Maximum Operating Altitude 10,000 feet (3000m)
Surge Life at 0.5kA (8/20μs) >2000 events
Material of Construction Black oxidized aluminum alloy
Dimension (W×D×H) **"×3.55"×1.75" (**mm×89mm×44.5mm) - Page 03 - Back to TOP -

Main Features
1. Perfect structural design, height: 1U (44.5mm), depth: 89mm
2. Exquisite craftsmanship, Reversible ears faces front or rear in rack
3. Black aluminum alloy oxidation, artistic color, sleek edge
4. Independent grounding terminal, superior surge protection features
5. Modular-structure and Multi-function customized combination, standard 19-inch length, more options of customized lengths are available

19-inch Rack Mounted (24 Port, 16 Port, 12 Port)

Installation Instruction
The surge protective devices shall be employed in a Listed enclosure or closet that is only accessible to technicians or service personnels. - Page 04 - Back to TOP -

WTH-SG/RJ45-KH-C/24 Dimension

WTH-SG/RJ45-KH-C/16 Dimension

WTH-SG/RJ45-KH-C/12 Dimension - Page 05 - Back to TOP -

WTH-SG/RJ45-KH-C/8 Dimension

WTH-SG/RJ45-KH-C/4 Dimension

WTH-SG/RJ45-KH-C/2 Dimension - Page 06 - Back to TOP -

WTH-SG/RJ45-KH-C/1 Dimension

Surge Protection Connection Diagram - Page 07 - Back to TOP -

Application - Page 08 - Back to TOP -

FAQ & Help (1/2)
1. What should I do if I can't find the paper manual in the product packaging?
Watchful Eye products is committed to going green with paperless data sheets. On the rear side of each product enclosure is an engraved link with URL for downloading paperless data sheet and QR code of the website. If you need the paper data sheet, you can open the link and print the data sheet by yourself.

2. Model WTH-SG/RJ45 has no LED status indicator. What instruments can be used to test whether its surge protection function is normal or not?
Test with a Watchful Eye surge protector tester.
If a system failure occurs, first remove the surge protector and restore the system to the wiring status without the surge protector. If the system failure is resolved, it shows the surge protector is faulty. Using Watchful Eye Surge Protective Tester can more easily test whether the WTH-SG/RJ45 series is normal or not.

3. Can you list more applications of WTH-SG/RJ45 series?
Ethernet & PoE equipment such as network switches, routers, computers, servers, video cameras, etc.

4. What are the advantages of the GDT+TVS type surge protection?
It provides a two-step surge protection mode: the first-stage GDT protection, releasing strong surge intrusion and reduce the strength of the surge; it is followed up the second-stage TVS fine protection, achieving a lower residual voltage value.

5. If the wires on the line side and the equipment side are connected reversely, will it affect surge protection?
When the wire is connected reversely, TVS becomes pre-stage protection, and GDT is post-stage protection. The nominal discharge current of TVS protection will be much lower than GDT. If it encounters a surge intrusion, it may cause damage to the TVS. The second-stage GDT protection will also play a role in surge protection, but the residual voltage value will increase, which is a risk to the protected equipment.

6. What are the advantages of 1-2, 3-6, 4-5, 7-8 line full protection mode of GDT+TVS type surge protection?
If you don't know whether the system is 100M or 1000M, which PoE structure or wiring mode the system is, the full line surge protection mode of GDT+TVS avoids the confusion of your selection.

7. In addition to the 24 Port, 16 Port, and 12 Port models that are 19" rack-mounted, do the other port products have ears for installation?
Yes, any WTH-SG/RJ45-KH series products come with mounting ears

8. How do I determine the quantity of surge protector that I need for protecting the equipment?
Surge on the STP cable will be transmitted in two directions to the ends of the cable. The surge protector A protects the equipment on the A side, such as an ethernet switch, etc. And Surge protector B protects the equipment on the B side. such as an ethernet equipment. If only the device on one end of cable needs to be protected, then only one surge protector is needed. - Page 09 - Back to TOP -

FAQ & Help (2/2)
9. How can I customize other products of 19" rack?
In addition to Ethernet Surge Protector, there is 19-inch Rack Power Distribution Unit (PDU).
Modular design allows you to customize the plug-in modules to fit your needs, 19-inch standard dimension or other custom-sized dimensions maximize the ease of use and maintenance.

Click the blue button "Customize your PDU" to start

Customize your PDU - Page 10 - Back to TOP -

Download WatchfulEyE Official App
To learn about more products and updates from company, please scan QR code to download the official App:

After-sale Services
Watchful Eye provides a 5-year quality warranty globally.

I have a question - Page 11 - Back to TOP -