Which of the following is NOT a type of motor protection?

Circuit breaker protection is considered a general electrical protection mechanism rather than a specific type of motor protection. While circuit breakers are essential for protecting electrical circuits from overload and short circuits, they do not specifically address the unique requirements of motors.

Overload protection is crucial in safeguarding motors from excessive current that can lead to overheating and damage. Ground-fault protection is important for detecting and interrupting faults that occur when current unintentionally flows to the ground, which is particularly significant in motor applications where safety is a concern. Thermal protection is designed to monitor the motor's temperature and prevent damage from overheating.

Each of these protections addresses specific issues that can arise in motors, making them vital for motor longevity and performance, while circuit breaker protection serves a more general purpose in overall circuit safety.