The Square D QOB240VH1021 is a 40 A, 2-pole miniature circuit breaker designed for bolt-on mounting in Square D QOB panel bases. It protects 120/240 V AC single-phase circuits with a thermal-magnetic trip and offers a 22 kA interrupt rating at 120/240 VAC. As a bolt-on QOB unit, it must be installed in a compatible bolt-on base in panels that accept QOB breakers. This 2-pole device is suited for feeding 240 V circuits or shared 120/240 V multiwire branches in residential or light commercial distribution.
