Lightning is a major source of voltage spikes that can damage or destroy your investments.

This will protect your entire home's downstream electrical system although surge protectors are still recommended.  Uses MOV design to arrest voltage surges with a low resistance path line-to-line, line-to neutral, or line-to-ground while providing a high resistance path to the 50/60 Hz power source.  Response time is 25 nanoseconds to clamp 50,000 amps.