Schneider Electric Square D QO2110 Circuit Breaker

Square D QO2110 is a 110-amp, two-pole miniature circuit breaker from Schneider Electric’s Square D QO line, designed for 120/240-volt circuits in residential and light-commercial panels. It offers a 10,000-amp interrupting rating (10 kA) and uses plug-in mounting to drop into compatible QO load centers, providing compact, reliable overcurrent protection for single-phase distribution. The unit is a 2P device, meaning you get two energized conductors protected together for 240 V circuits, with standard QO form factor that matches other QO breakers for easy replacement and consistency across the panel. Common applications include protecting high-demand branch circuits such as large appliances or multi-wire feeder legs in 120/240 V panels, where safe disconnection of both hot legs is required. Verify your panel’s compatibility with QO series breakers and ensure the bus configuration supports a 2P, 120/240 V arrangement for proper operation.