Square D by Schneider Electric QO 15 and 20 Amp Single Pole Cascade Circuit Breaker is designed for overload and short circuit protection of your electrical system.This switch offers 2 circuits in the space of only 1 and is compatible with QO charging centers, CSED devices and NQOD panel panels.ANSI certified unit and listed UL is rated for 120/240V AC and 10,000 AIR.All QO automatic switches are equipped with Visa-Trip exclusive indicator.When a QO Visa-Trip circuit breaker, the handle adjusts to a midpoint position between "Off" and "On" and a highly visible red indicator easily identifies the triggered circuit breaker.This allows you to easily distinguish which circuit breaker It has been triggered in a charging hub that can hold up to 42 different circuit breakers.QO automatic switches have features that no other manufacturer can offer.They come in different sizes and can meet the needs of virtually all the functions of your home or business.These types of industry-exclusive products keep the Square D brand ahead of the competition and are the first choice of electric contractors and builders in Electrical protection.