What is the function of a compressor motor overload protector?

The function of a compressor motor overload protector is primarily to protect the motor from overheating. This device monitors the temperature and electrical current of the motor, and if it detects conditions that could lead to an increase in temperature beyond safe levels—such as excessive load or sustained high current—it will interrupt the power supply to the motor. This protective mechanism helps prevent potential damage caused by overheating, which can lead to motor failure or even fire hazards.

Understanding the importance of this protection is crucial for maintaining the longevity and safety of motors used in compressor applications, where continuous operation can lead to overheating under certain conditions. In contrast, the other choices do not accurately reflect the role of an overload protector. For instance, providing excessive power or assisting in starting the motor does not align with the primary function of temperature regulation and damage prevention. Similarly, while efficiency is an important factor in motor performance, the overload protector does not actively contribute to increasing efficiency; rather, it serves as a safeguard against overheating risks.