The QO and QOB single, double and three pole thermal magnetic circuit breakers provide overcurrent protection and switching for AC and DC systems. These circuit breakers feature an over-center, trip-free toggle mechanism with quick trip, quick break and positive handle indication. They also feature a VisiTrip trip indicator that provides a visual indication that the circuit breaker has tripped and broken the circuit. This QO single pole plug-in circuit breaker is rated for 20A, 120V AC. This circuit breaker offers a breaking capacity of 10 kA. This circuit breaker is UL listed and rated as SWD (switching duty). It is suitable for switching 120V AC fluorescent lamp loads. A full range of factory installed accessories such as shunt trips, auxiliary switches and alarm switches are available. This circuit breaker has a Class B 30 mA ground fault with a pigtail. The pressure plate terminals can accept 14 AWG to 8 AWG copper or 12 AWG to 8 AWG aluminum wire. This circuit breaker has a height of 104.6 mm, a width of 19.1 mm, and a depth of 73.9 mm. QO circuit breakers are UL listed under UL File E84967 and CSA certified under CSA Master Contract 153555.