Overheating (electricity)

A fuse is a common type of circuit breaker that involves direct effect of Joule-overheating.

In some cases, to remove unwanted heat, a cooling system like air conditioning or refrigerating heat-pumps may be required.

Sometimes, special circuits are built for the purpose of sensing and controlling the temperature or voltage status.

Devices such as thermistors, voltage-dependent resistors, thermostats and sensors such as infrared thermometers are used to modify the current upon different conditions such as circuit-temperature and input voltage.

For certain purposes in an item of electrical equipment or a portion of it, definite type and size of materials with proper rating for voltage, current and temperature, are used.