QO and QOB one, two and three pole thermal magnetic circuit breakers provide overcurrent protection and switching on ac and dc systems. These circuit breakers have an over center, trip-free toggle mechanism with quick-make, quick-break action and positive handle indication. They also have VisiTrip trip indication, which provides a visual indication that the circuit breaker has tripped and interrupted the circuit. This tandem QO plug in miniature circuit breaker has one pole rated as 15A, 120/240 VAC and one pole rated as 30A 120/240 VAC. This tandem circuit breaker is non-CTL (non circuit total limitation). Circuit breaker is HACR rated. This circuit breaker provides 10 kA breaking capacity. A full line of accessories are available. The box lugs will accept one 14 AWG to 8 AWG copper or aluminum wire. This circuit breaker has a height of 3.22 inches, a width of 0.75 inch and a depth of 2.91 inches. QO tandem circuit breakers are UL Listed and CSA certified.