Square D QOB340 is a QO series thermal-magnetic mini circuit breaker that provides overcurrent protection and switching for AC and DC systems. The QOB340 is a 3-pole common-trip breaker rated 40 A at 120/240 VAC with a 10 kA interrupting capacity and bolt-on mounting. It uses a trip-free, quick-make/quick-break toggle and includes VisiTrip visual trip indication with screw terminal connections.
Thermal-magnetic protection with over-center, trip-free toggle and quick-make/quick-break action
Electrical rating: 40 A, 120/240 VAC, 3-pole common trip, 10 kA interrupting capacity