The Square D by Schneider Electric QO 15 amp single-pole tandem circuit breaker is intended for overload and short-circuit protection of your electrical system. This breaker offers 2 circuits in the space of just 1 and is compatible with QO load centers, CSED devices and NQOD panel boards. The ANSI-certified and UL-listed unit is rated for 120 or 240 VAC and 10,000 AIR. 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 and in on 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.