The Eaton NSB QC3090H is a three-pole miniature circuit breaker (MCB) rated for 90 A at 240 V and designed for 50/60 Hz operation. With a 3P configuration, it protects three‑phase circuits in distribution panels. This model is part of Eaton's NSB QC line, delivering compact breaker protection for applications requiring a 3‑pole, 90 A, 240 V device.
