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Your cart is empty.4.2 out of 5 stars
- #27,562 in Electronics (See Top 100 in Electronics)
- #248 in Surge Protectors
Product Description
Paperless Datasheet:
Going green and protecting environment is manufacturers' responsibility. WatchfulEye products have the links of downloading data sheet on its enclosure.
- Smart Surge Protector
- New Energy System
- AC Power Supply System
- DC Power System
- Ethernet & PoE System
- Data Signal & RS485 System
- 4~20mA Control System
- Power Distribution Unit (PDU)
Surge Protector for Ethernet System
Technical Data:
- WTH-SG/RJ45 Series surge protective devices are applied to surge protection for data communication systems.
- WTH-SG/RJ45-S is connected in series in CAT6 network cables, compatible with 10/100/1000M 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.
- Total Discharge Current (Imax @8/20μs): 0.3kA x 8 (line to GND)
- Voltage protection level (Up @Line-GND): 45V @ 0.3kV (8/20)
- Data Rate: 100/1000Mbps
- Bandwidth (2db) per pair: >250MHz
- Insertion Loss: <0.2dB @100MHz
- Pairs Protected: 1-2,3-6,4-5,7-8
- Protective Element: GDT, TVS
- Mini & Direct in Line Plug-in
Direct in Line Plug-in
- Net Weight Per Unit: 5g
- Dimensions (W×D×H): 1.3"×0.7"×0.7"
Paperless Datasheet
Unique Serial Number
Application
Ethernet System only
Application for Ethernet
- 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.
- 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, the full line surge protection mode of GDT+TVS avoids the confusion of your selection.
- 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.
- Is WTH-SG/RJ45-S compatible with PoE system? WTH-SG/RJ45-S is compatible with PoE system, the breakdown voltage of WTH-SG/RJ45-S on line-GND is higher than 100V; The specifications tested under PoE 57V standard: 300mA each pair line, total Max Watt on 4 pair lines is 65W.
Surge Protection Connection Diagram
- Note: the stainless steel shrapnel is not connected to ground.
Antonio Suarez
Reviewed in the United States on July 19, 2025
It takes one second just unplug and then plug back. I know it's not an industrial but it's only $17 and I don't live in Florida so it's more than enough for my area
C. John Buchanan Sr.
Reviewed in the United States on June 29, 2025
I lost 2 tvs and routers from lighting. Even right now with it being storm season I haven't had a problem yet since I hooked this little guy up.
Dean Thompson
Reviewed in the United States on January 4, 2025
Nice to have this additional level of protection that almost all people ignore. I’ve had equipment destroyed through a surge on the network jack and the vendor would not honor the warranty and said I had to have something like this to be covered. It was a crap stance by them and should make that more well known in their documentation. So I got this and they are really easy to install and smaller than I thought so you do t have to skip spots in your switch. No problems so far. If they were cheaper I might put them on more things. For now they cover my internet provider coming in and my high dollar equipment.
JBK
Reviewed in the United States on April 10, 2025
This relies on the shield for grounding. I'm using them as a second layer of defense with a traditional grounded gas-discharge surge protector in front of POE injectors, and this between the POE and switches. The links I am protecting go outside, and up high, so every layer of protection is worthwhile for me. Maintains 1gbps connection for me even with a long cable.
Danno Lp
Reviewed in the United States on September 3, 2024
These are nice quality, and I have noticed no difference in throughput with them implemented.A couple of things that could be a problem for some:1. The size - if your network switch's ports are very close together, these will block the ports adjacent to them. I purchased shielded CAT6 extensions to solve that.2. The fastening tab is ever so slightly wider than that of a standard RJ45 connector, so on some ports it is too wide to click in, and it will fall out of the port. You can either use a shielded extension and hope the extension's port fits the surge protector's tab, or you can hit the tab very slightly with a Dremel and get it to the right size. It's *barely* out of spec. A very quick filing of the left and right side of the tab should be sufficient. Bzzzp...bzzzp. Done.
R A
Reviewed in the United States on July 24, 2024
I picked these up after installing a few at work actually. At work, we have a bunch of cameras that sit on the outside of our building and a while back, after a nearby lightning strike, it created enough of a surge on the lines outside, that it injected that surge directly into the PoE switch causing it to fail. Well this wasn't the first time that switch failed either... in fact surges in this way have killed a total of 3 switches over the past decade due to this reason. Well, we had installed these on that switch a while back, and I can't say for sure that it's because of these, but we've had a LOT of thunderstorms lately with multiple near strikes again, but this time around our switch survived, not a blip. I'd like to think these little things are what saved the $1000 switch, and if that is the case, they're well worth the money. That said, I ended up picking up a pair of these for my equipment at home because it's just peace of mind.
L. V.
Reviewed in the United States on May 6, 2024
Others have complained that the connectors do not lock. In several cases for me (asus router, dell precision workstation) the "lock" not only fails to lock, it actually pushes the connector out of the socket. At best the connection is unreliable. I ended up having to buy a different brand.
Paul S.
Reviewed in the United States on August 11, 2023
I purchased this ethernet surge protector on the recommendations from this community, people complained about the unit not clicking in. I had no issues I use this in my access point in my barn that is hardwired by the Internet to my house 125 feet away, we lost the access point in a lightning storm earlier this week. I bought a new one and put a ethernet search protector in line. Hopefully this will help to protect my equipment.
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