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Qooltek ST-NET Ethernet Surge Protector for 10/100/1000 Base-T PoE+ Gigabit Modem Thunder & Lighting Protection ST-RJ45

4.3 out of 5 stars 105 ratings

-20% $15.98
List Price: $19.99
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& FREE Returns
Return this item for free
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Brand Qooltek
Connectivity Technology Ethernet
Item Dimensions LxWxH 0.98 x 0.98 x 2.76 inches
Number of Ports 8

About this item

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  • ✔ Imax=10KA, Isn=5KA; 7.5 inch green ground wire
  • ✔ NM Surge Response Time (ns): 1 ns
  • ✔ Interface Connection Type: RJ45 Female to Female
  • ✔ Earthing Method: Direct Grounding System by Connecting Line
  • ✔ Data Line Protection: RJ45 10/100/1000 Base-T Ethernet

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Product Description

Qooltek ST-RJ45 Lightening Arrestor

ST-NET Ethernet Surge Protector offers protection for sensitive electronic equipment against power surges and spikes.

Material: 
-High insulation resistance 
-Cast aluminum construction
 
Both Ends Are RJ-45 Interface
-There is no "In" or "Out" cable side of this device, both sides are identical RJ-45 Interface.
-It doesn’t matter if your equipment is behind any particular side and it doesn’t matter from which side PoE source comes.


How I installed the ST-RJ45: 
Once you know how it's done, it's rather easy to install this product, but a simple diagram to supplement the written instructions
would have made it much clearer. 

- The cable from the DSL ISP goes into the input port of the ST-RJ45 
- The cable from the modem connects to the equipment port of the ST-RJ45 
- The green ground wire is connected to the ground screw of the UPS

Technical Parameters:

-Nominal Operating Voltages: 
-Line-Line(Un): 5 Volts 
-Line-Line(Uc): 8 Volts 
-Line-Ground: 90 Volts
 
-Nominal discharge currents : 
-Line/Line: < 5KA (8/20μs) 
-Line/Ground: 10KA (8/20μs)
 
-Environmental 
-Operating Environment -40-70°C(-40°F to +158°F) 
-Operating Relative Humidity 0 - 95%

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Customer Rating 4.3 out of 5 stars (105) 4.5 out of 5 stars (367) 4.5 out of 5 stars (370) 4.7 out of 5 stars (129) 4.7 out of 5 stars (5342) 4.6 out of 5 stars (437)
Price $15.98 $27.99 $20.79 $49.99 $28.60 $14.00
Sold By Qooltek Tupavco Equipment Amazon.com Tupavco Equipment Amazon.com NYCelectronic
Item Dimensions 0.98 x 0.98 x 2.76 inches 3.4 x 1.4 x 2.3 inches 1.34 x 1.34 x 1.34 inches 3.4 x 1.4 x 2.3 inches 13.6 x 2.4 x 7.6 inches 3.58 x 2.4 x 1.28 inches
Item Weight 0.64 ounces 2.40 ounces 4.23 ounces 4.80 ounces 2.12 lbs 2.82 ounces

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4.3 out of 5 stars
4.3 out of 5
105 global ratings

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