Square D QO380 N Three Phase Molded Case Circuit Breaker

The Square D QO380N is an 80-amp, three-pole molded-case circuit breaker designed for 240V AC service. As a member of Schneider Electric’s QO family, this plug-in breaker provides thermal-magnetic overcurrent protection for three-phase circuits in compatible load centers and panels, with a 10 kA at 240V interrupt rating. It is specified for 240V, 3 poles, and 80A, making it well suited for safeguarding feeders and branch circuits in residential, commercial, and light-industrial electrical distributions. The device utilizes a thermal-magnetic trip mechanism to respond quickly to overcurrent events, delivering reliable protection in everyday panelboard applications. Typical applications include protecting three-phase motors, pumps, and fans in service equipment and distribution panels within commercial buildings, as well as general-purpose three-phase circuits in light-industrial settings. The QO380N aligns with the QO-series lineup for standardized mounting, trip characteristics, and interchangeability in compatible Schneider Electric panels, ensuring consistent performance across standard 240V three-phase installations.