Protect a breaker panel in a load center with this Square D by Schneider Electric QOM2 frame size 225 Amp Double-Pole Main Breaker. Used for overload and short-circuit protection of your electrical system, this breaker is compatible with QO and Homeline load centers, CSED devices and NQOD panel boards rated for 225 amps. QO circuit breakers have features no other manufacturer can offer. They come in many different sizes and can meet the needs of virtually every function in your home or business.