Three electrical devices that offer protection from overcurrent are circuit breakers, fuses, and surge protectors.

Circuit breakers are devices that automatically interrupt the flow of electricity when they detect an overcurrent in a circuit. Fuses are similar to circuit breakers in that they also interrupt the flow of electricity when they detect an overcurrent, but they do so by melting a metal wire inside the fuse. Surge protectors are devices that protect electrical devices from voltage spikes or surges, which can occur during lightning strikes or power outages. Surge protectors divert excess voltage to the ground, protecting the connected devices from damage.

Circuit breakers, fuses, and ground fault circuit interrupters (GFCIs) are three electrical devices that offer protection from overcurrent. Surge protectors are designed to protect against voltage spikes, not overcurrent.