Surge Protection Devices (SPDs) safeguard electrical equipment by diverting transient voltage surges to ground, preventing them from damaging sensitive components. The principle behind SPDs relies on their ability to quickly change from a high-impedance (resistance) state to a low-impedance state when a voltage surge occurs. A voltage surge is a temporary and unwanted increase in voltage that can be caused by lightning strikes, switching of electrical loads, or equipment malfunctions. SPDs typically contain voltage-sens....
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