Schneider Electric's Square D QOB250 is a bolt-on miniature circuit breaker designed for 120/240 VAC, delivering 50 A in a 2-pole configuration with a 10 kA short‑circuit interrupt rating. It mounts via bolt-on hardware and uses a plug-on neutral design to shorten the footprint for faster installation in compatible QO/NQ panelboards. This QOB250 bolt-on breaker is part of the QOB family and is intended for use in panels that require bolted breakers for 50 A circuits up to 240 V in 1‑phase distribution systems.
