A circuit breaker trips to protect your home from electrical overloads or faults. The most common reasons for a breaker to trip include overloaded circuits (where too many devices draw power from the same circuit), short circuits (where hot and neutral wires touch, causing an electrical surge), or ground faults (when a hot wire touches a grounded part). To fix it, locate the breaker panel, find the switch in the off position, and reset it by flipping it fully off and then back on. To prevent future trips, reduce the load on your circuits by unplugging or redistributing devices, inspect your appliances for faults, and, if necessary, call an electrician if the problem persists or you notice more serious signs like burning smells or sparks.