In electrical systems, which component is responsible for disconnecting power during an overload?

The fuse is the component that is responsible for disconnecting power during an overload. A fuse is designed to provide overcurrent protection by providing a path for the electrical current to flow. When the current exceeds a predetermined limit, the fuse will heat up and melt, breaking the circuit. This action effectively disconnects the power supply to the circuit, preventing overheating, potential fires, and damage to equipment that could occur if the excess current were allowed to continue flowing.

In contrast, a transformer is primarily used to change the voltage level of an electrical supply and does not have protective properties against overcurrent. A grounding electrode is used for grounding purposes, helping in safety measures by providing a path for fault currents to dissipate, but does not disconnect power in an overload situation. Conductors serve as pathways for electricity to flow and do not have any mechanical components to interrupt the circuit during overload conditions. Therefore, the fuse plays a crucial protective role in maintaining the safety and integrity of electrical systems.