Schneider Electric QOB290 Bolt On Circuit Breaker

Schneider Electric's QOB290 bolt-on circuit breaker is a two-pole, 90-amp protective device for 120/240-volt AC circuits, designed for bolt-on mounting in Square D QO panelboards and NQ/NQOD panel interiors. It provides overcurrent protection with a common-trip mechanism that ensures both poles trip together on fault. The standard QOB290 carries a 10 kA interrupting rating at 240 VAC, making it suitable for residential and light-commercial panel installations that require bolt-on breakers. As part of the QOB bolt-on family, it shares the same electrical characteristics as the QO line while meeting enclosure requirements that specify bolt-on mounting, and some variants of QOB breakers feature a Visi-Trip indicator for quick trip identification. This 2-pole unit is appropriate for feeders or branch circuits in compatible Square D distributions where bolt-on mounting is specified, delivering reliable protection and switching for circuits in qualified panel assemblies.