What is the primary function of a surge protector in motor applications?

The primary function of a surge protector in motor applications is to safeguard motors against voltage spikes. Surge protectors are designed to absorb and redirect excess voltage that can occur due to lightning strikes, power surges, or other transient voltage events. These voltage spikes can significantly damage electrical equipment, including motors, by exceeding their voltage ratings and causing insulation failure or other catastrophic damage.

By effectively clamping down on these spikes and preventing them from reaching the motor, surge protectors help maintain the integrity and longevity of the motor. This protective measure is crucial, as it mitigates the risk of expensive repairs or replacements that could arise from unprotected exposure to high voltage levels.

In terms of the other options, enhancing motor speed and efficiency relates to motor drive technology rather than surge protection. Regulating motor temperature is typically achieved through thermal protection measures or cooling systems, not surge protection. Monitoring motor RPM is a function of tachometers or other feedback devices that track rotational speed rather than being a role of a surge protector.