1) Most inexpensive surge protectors only protect for surges between the hot and neutral power lines. Better ones (like this) are called "3 line" surge protectors, with protection from hot to neutral, hot to ground, and neutral to ground.
2) Surge protectors are also rated by the amount of energy they can absorb. You can find very cheap ones as low as 70 joules. These are specified as absorbing up to 885 joules.
These units also have an LED which tells you if your outlet is grounded, which is useful information.
However, on one of the six units I bought, the ground LED does not illuminate. It's not worth the shipping to send it back, so I took it apart to see if I could spot the problem. I couldn't, but the construction is solid and I can verify that there are, in fact, three MOVs (metal oxide varistors - the surge absorbing component of most surge protectors).
I'm sure there are better surge protectors out there, but at this price point, these are hard to beat.
Click Here to see more reviews about: Belkin SurgeCube Surge Protector, 1-Outlet Home Series
Product Description:
The Home Series offers 1-Socket Wall Mount direct plug-in surge protector for your general electronics, home appliances, and more. This single outlet model boasts 885 Joules, 45,000 Maximum Spike Amperage, and a lifetime $50,000 Connected Equipment Warranty.
Main Features
Manufacturer: Belkin Corporation.
Manufacturer Part Number: F9H100-CW
Manufacturer Website Address: www.belkin.com
Plug/Connector Type: NEMA 5-15
Receptacles: 1 x NEMA 5-15
Dataline Protection: Not Applicable
Current: 45kA Maximum Surge Current
Standard Warranty: Lifetime Limited
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