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The SQDQO1201200 is a reliable Square D single pole 20A 120V circuit breaker designed for superior performance and safety. Equipped with an auxiliary contact, it provides added functionality for your electrical systems. Perfect for residential and commercial applications, this breaker ensures optimal protection and durability in demanding environments.
The auxiliary contact is a built-in signalling device that changes state (open/closed) whenever the breaker trips or is turned off. It's commonly used to trigger an alarm, send a remote status signal to a building automation system, or indicate a fault condition on a monitoring panel. If you don't need remote monitoring, a standard QO120 without the aux contact will also fit your QO loadcentre.
No — QO-series breakers are not interchangeable with Square D Homeline panels. QO and Homeline use different bus-stab designs and are not cross-compatible. If you have a Homeline panel, you'll need a Homeline-series breaker. Contact our team and we'll help you identify the right part.
Yes, the Square D QO-series is an active product line. However, variants with specific accessories like the auxiliary contact can sometimes have longer lead times or limited local stock. Northern Breaker Group specializes in both current and hard-to-find breakers — reach out for a quote and availability check at any of our Calgary, Edmonton, or Vancouver locations.
