What device is used to interrupt and de-energize an electrical circuit to prevent electrocution?

The Ground Fault Circuit Interrupter (GFCI) is specifically designed to protect individuals from electrocution by monitoring the electrical current flowing through a circuit. It detects any imbalance that may occur between the outgoing and incoming currents, which often indicates a ground fault, such as a person accidentally coming into contact with an energized part of the circuit. When a ground fault is detected, the GFCI rapidly interrupts the electrical circuit, cutting off the power supply and reducing the risk of serious injury or fatality due to electric shock.

While devices like a service drop, service entrance panel, and fuses play crucial roles in electrical systems—such as providing the supply of electricity, managing power distribution, and protecting against overcurrent—none of them are specifically focused on preventing electrocution in the same proactive manner as the GFCI. The GFCI offers crucial safety features that are particularly important in areas with higher moisture levels, where the risk of electric shock is increased, such as kitchens and bathrooms.