Schneider Electric QOB320 3 Pole Circuit Breaker

Schneider Electric's QOB320 is a three-pole bolt-on miniature circuit breaker rated 20 A at 240 V AC, designed for use in QO bolt-on panels. It provides three-pole protection for 240V, three-phase circuits with a 10,000 A short-circuit interrupting rating (AIC) at 240V, making it suitable for motors, HVAC equipment, and other 3P loads in commercial or industrial environments. This unit measures about 3.5 inches high, 2.3 inches wide, and 2.9 inches deep, and it features bolt-on mounting for secure installation in compatible Square D/QO panels. Note that QOB breakers are bolt-on only and are not interchangeable with plug-on QO breakers, so this model should be used when a three-pole 20 A 240 V bolt-on protection device is required. Its compact footprint and exact QOB form factor support reliable overcurrent protection for 3-phase equipment while maintaining consistent trip characteristics and clear labeling in panel schedules.