Square D by Schneider Electric HOMT3020 Homeline 1-30-Amp 1-20-Amp Single-Pole Tandem Circuit Breaker Homeline 30/20 Amp one-pole Tandem circuit breaker Plug-on design, easy to install Compatible with Homeline load centers and CSED devices 120/240 Vac Rated for 10,000 AIR