What is the purpose of surge protection devices (SPDs)?

Surge Protection Devices (SPDs) are designed specifically to protect electrical systems from transient voltage surges, which can be caused by lightning strikes, switching operations in the power grid, or other abrupt changes in electrical energy. When a surge occurs, it temporarily increases the voltage in a circuit to a level that could damage sensitive electronics and equipment. SPDs detect these surges and redirect or limit the excess voltage to safe levels, preventing potential damage to connected devices such as computers, televisions, and industrial machinery.

The purpose of SPDs is crucial in maintaining the operational integrity and longevity of electronic and electrical systems, ensuring that equipment remains functional and protected from unpredictable and potentially destructive voltage spikes. This is particularly important in environments with high-value electrical equipment or critical operations that cannot afford downtime due to damage from electrical surges.