What safety feature automatically shuts off power to a power tool if it overheats?

Thermal overload protection is a crucial safety feature that helps prevent equipment damage and personal injury by automatically shutting off power to a power tool when it reaches a temperature that is too high. This mechanism is designed to protect the motor and internal components from overheating, which can occur during prolonged use or if the tool is subjected to excessive load. By disengaging the tool when it overheats, thermal overload protection ensures that the tool does not continue to operate under dangerous conditions, thereby extending its lifespan and providing a safer working environment for the user.

The other options, while they serve varying safety functions, do not specifically address the issue of overheating. Battery backup systems are designed to provide power in the event of an outage, emergency shut-off switches are manually activated to cut power in urgent situations, and resettable circuit breakers are intended to protect against electrical overloads by interrupting the flow of electricity, but they do not specifically monitor temperature or mitigate overheating conditions as thermal overload protection does.