What is the name of an overload protection device that can be reset after tripping?

The device that can be reset after tripping is known as a circuit breaker. Circuit breakers are designed to automatically interrupt the flow of electricity in case of an overload or short circuit, protecting the electrical circuit from damage.

Once the cause of the overload is resolved, a circuit breaker can simply be reset to restore power, which makes them more convenient than fuses that must be replaced after they blow. This reset feature allows for both effective protection and ease of maintenance, as users do not need to worry about replacing components after every incident.

This characteristic is important in various applications, from residential to industrial settings, where quick restoration of electrical service is often required. Other devices mentioned, like fuses, be replaced after they blow, while relays function in a control capacity and transformers neither protect against overloads nor reset.