The QO 2-20 Amp Single-Pole Class CTL Tandem Circuit Breaker by Square D is a reliable electrical component suitable for wall mounting, both indoors and outdoors. With a maximum amperage of 20A and a voltage range of 201-250V, this thermal circuit breaker provides overload protection and features a Type D tripping characteristic. The compact design, featuring a height of 3.22 inches and a width of 3.44 inches, makes it easy to install and operate with its switch control style. This tandem breaker is ideal for industrial applications and offers instantaneous break time for added safety.