What are Surge Protection Devices? Surge protection devices (SPDs) are designed to protect sensitive electronic equipment from power surges and spikes that occur on the electrical power supply system. SPDs work by diverting excess voltage to ground before it can damage connected equipment like computers, appliances, industrial controls and more. The most common SPDs include surge p... https://articlescad.com/protect-your-electronics-and-appliances-with-surge-protection-devices-65524.html