Square D by Schneider Electric QOB bolt-on 3-pole miniature circuit breaker, rated 15 A at 240 VAC, is built for three‑phase branch protection in compatible QOB panelboards. It carries a 22 kA interrupting rating at 240 VAC, making it suitable for protecting three‑phase circuits in commercial and light industrial electrical installations. In catalogs and listings, it appears as QOB3155237, and some retailers also list LP-9640 as an alternate designation for this same device.
