The Square D by Schneider Electric QO Qwik-Gard 15 amp one-pole GFCI circuit breaker is intended for protection of entire branch circuits where damp-location shock hazards may exist, providing overload and short-circuit protection of your electrical system. All QO circuit breakers are equipped with the exclusive visi-trip indicator. When a QO visi-trip circuit breaker trips, the handle snaps to a midpoint position between in. off in. and on in. and a highly visible, red indicator easily identifies the tripped breaker. This enables you to easily distinguish which breaker has tripped in a load center that may contain up to 42 different circuit breakers.