Apc surgearrest is the ideal way to keep your electronic devices safe in the event of a power spike or interruptionr r protectionr r lightning and surge protectionr to prevent damage to your equipment from electric power surges and spikes r r ieee let through ratings and regulatory agency compliancer apc surge protectors undergo stringent testing by ieee and are awarded let through ratings which indicate the maximum voltage level that can possibly reach your equipment after a surge or vo