What type of switch allows you to reset the circuit?

A circuit breaker is the type of switch that allows you to reset a circuit after it trips. It automatically opens the electrical path when it detects excessive current, helping protect wiring and equipment from damage.

Circuit breakers are designed to be reset after the fault or overload is corrected. This distinguishes them from fuses, which melt once and must be replaced. Many household breakers use a lever that can be moved back to the “on” position, while larger systems may use more complex switching mechanisms.

A breaker can trip because of an overload, such as too many appliances sharing one circuit, or a short circuit caused by an unintended low-resistance path. Resetting it repeatedly without finding the cause can be unsafe. A circuit breaker may also serve as a manual isolation switch, but its defining safety function is interrupting abnormal current.