Schneider Electric's Square D QOB240 is a 2-pole bolt-on miniature circuit breaker rated at 40 A for 120/240 V AC, with a 10 kA interrupt rating. It delivers thermal-magnetic overcurrent protection and switching for 2-pole branch circuits in compatible panels and OEM mounting bases. The QOB240 belongs to the bolt-on QOB family and is designed for bolt-on mounting in Square D/QO load centers and distribution equipment. This 240 V device protects two hot legs against overload and short circuits, making it a standard choice for 240 V circuits in residential and light commercial installations.
