Square D QO Tandem/Single Pole 20/20 amps Circuit BreakerSquare D QO Tandem Single Pole 20 20 amps Circuit Breaker Brand Name: Square D Sub Brand: QO Amps: 20 20 amps Circuit Protection Type: Tandem Number of Poles: Single Pole Product Type: Circuit Breaker CSA Listed: Yes Product Series: QO UL Listed: Yes Packaging Type: Boxed Volts: 120 240 volts Mounting Type: Plug In Height: 3 in. Depth: 2. 91 in. Indoor or Outdoor: Indoor Width: . 75 in. Non interchangeable. 10,000 AIR. Visi Trip indicator. Circuit