The QO 15 Amp Tandem Single-Pole Circuit Breaker features 2 circuits in the space of 1. The breaker has 2 tandem poles, each rated for up to 15 Amp. The unit uses a thermal-magnetic tripping mechanism with a Visi-Trip indicator that helps you easily identify a tripped circuit. This 1-pole breaker is compatible with old-style, non-class, CTL and Plug-On Neutral Square D QO load centers.