Square D QO2020C Tandem Circuit Breaker, 20 Amp Extensions Mounting Hole Size: 7 mm

Mounting Hole Size: 7 mm

Cuts 7/16" up to 300 Brinell

Ergonomically designed handle provides greater comfort and less user fatigue

Bevel Capacity: 55 degree

Step-down diffuser rings deflect air stream 360°

Square D QO2020C Tandem Circuit Breaker, 20 Amp Extensions Mounting Hole Size: 7 mmHighlights: Qwik Open circuit breaker protection (trips within 1 60th of a second) on 15 and 20 Amp single pole breakers at currents as low as 150 to 200 Amps Trips thermally (in an overload situation) or magnetically (under a short circuit situation) Quick make quick break mechanism SWD (switching duty) rating on 15 and 20 Amp single pole breakers Plug on design, easy to install Wire terminals UL listed for 2 branch wires (10 30A, 1 and 2 pole)