Square D™ QO™ and QOB Miniature Circuit Breakers, QO2020, come in plug-in mounted version and in a complete range of amperages and interrupting ranges to fit into various QO distribution panels. Equipped with tandem HACR rated circuit breaker. UL listed CSA certified This QO tandem mini circuit breaker has 2 one pole at 20A for 120/240VAC. This unit provides 10kA breaking capacity and plug in mounting. A full line of features and factory installed accessories are also available such as shunt trips, auxiliary switches and alarm switches. QO circuit breakers are UL Listed under UL File E84967 and are CSA Certified under CSA Master Contract 153555