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Square D QOU340 is a miniature circuit breaker designed for overcurrent protection in both AC and DC systems. It ensures reliable switching and protection of electrical systems. The QOU340 is suitable for OEM applications.
This circuit breaker from Square D is fully tested, UL Listed, and CSA certified. It operates in any position and includes a Visi-Trip feature for easy trip detection.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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