Schneider Electric QOB3201021 Circuit Breaker

Schneider Electric’s Square D QOB3201021 is a three-pole, bolt-on miniature circuit breaker in the QO family rated for 20 amperes on 120/240 V AC circuits with a 10 kA interrupting capacity. Built for 3‑phase protection, it uses thermal-magnetic trip technology to guard against overloads and short circuits, and its bolt-on mounting ensures a secure fit in compatible panelboards. The QOB3201021 model can be used in commercial and industrial distribution applications where reliable circuit protection is required, and it accepts optional accessories such as an AC shunt release for remote tripping in controlled electrical systems. As a member of the QO/QOB family, it shares common housing and termination characteristics that suit standard enclosures and load centers compatible with Square D QO breakers.