Thermal Protector


Electrical Code

Thermal Protector (as applied to motors)

A protective device for assembly as an integral part of a motor or motor-compressor that, when properly applied, protects the motor against dangerous overheating due to overload and failure to start.

Informational Note: The thermal protector may consist of one or more sensing elements integral with the motor or motor-compressor and an external control device.

(National Electrical Code® 100-1)