ELI5: Explain Like I'm 5

Arc-fault circuit interrupter

An arc-fault circuit interrupter is a special device that helps keep you safe in case there's an electric fire in your home. It does this by quickly detecting when there's a dangerous electric arc, which is when electricity jumps from its normal path and creates a powerful spark or flame.

When an arc-fault is detected, the interrupter quickly shuts off the electric current to prevent the arc from causing a fire. It's like if you were playing with matches and your parent caught you before you could start a fire, and took the matches away to keep you safe.

Arc-fault circuit interrupters are important because they can prevent fires from occurring in your home, which could hurt you or your family members. So, it's important to have them installed in your home to help protect you from potential fire hazards.