Which device is typically used to interrupt electrical flows in case of an overload?

The device most commonly used to interrupt electrical flows in the event of an overload is a breaker. A breaker is designed to automatically disconnect the circuit when it detects a fault condition such as an overload or short circuit. By doing so, it prevents damage to the electrical system and reduces the risk of fire or other hazards. Breakers are a critical safety feature in electrical systems, ensuring that the flow of electricity is halted before any potentially dangerous conditions arise.

In contrast, a relay is an electromechanical switch that can control a circuit but does not specifically serve the purpose of interrupting electrical flows due to overloads in the same manner as a breaker. A generator produces electrical power but does not have a role in interrupting current flow. A transformer is used to change the voltage levels in AC circuits but does not actively disconnect or interrupt the flow of electricity.