What is the purpose of the overload switch in split phase motors?

The purpose of the overload switch in split phase motors is to protect against excessive current. This protective device is designed to monitor the current flowing through the motor and trip the circuit if this current exceeds a predetermined threshold. When the current is too high, it can lead to overheating, which could damage the motor or cause failures.

The overload switch ensures the longevity and reliability of the motor by preventing damage due to overcurrent conditions. It is a critical safety feature that helps safeguard the motor from potential electrical faults or mechanical issues that might cause it to draw more current than is normally expected.

In contrast, providing higher voltage, controlling motor speed, and initiating the start process involve different components and functions within the motor's operation. Each of those functions serves its specific purpose but does not relate directly to the protective role of the overload switch.