The term thermally protected in motors, pertains to a thermal protector placed internallly within a motor or motor-compressor to protect the motor and motor windings components from dangerous overheating that can cause motor failure.
This overheating generally occurs
The term thermally protected in motors, pertains to a thermal protector placed internallly within a motor or motor-compressor to protect the motor and motor windings components from dangerous overheating that can cause motor failure.
This overheating generally occurs when the motor is overloaded, a bearing seizes up, something locksd the motor shaft from turning, or the motor simply fails to start properly. A failure to start may be caused by faulty start windings in a motor.
The thermal protector consists of one or more heat-sensing elements integral with the motror or motor-compressor and an external control device. The thermal protection is in place to turn the motor off when excessive heat is generated within the motor circuitry and keep it from burning up the motor.
These thermal protectors are reste when the motor cools to a safe operating temperature. There is usually a visible red button located on the wiring side of the motor, opposite of the motor shaft, but not always. In some cases, these buttons are reset manually, but not always.
Although having a motor shut down because it tripped a thermal lmit is inconvenient, it certainly