QHB220 – SQUARE D 2P20A 65K BOLT ON BREAKER

The QHB series is a bolt-on breaker with a significantly higher interrupting rating — 65,000 AIC — compared to the standard plug-in QO breakers typically rated at 10,000 AIC. The QHB is designed for commercial and industrial panelboards with higher available fault currents, whereas QO plug-in breakers are intended for residential and light-commercial QO loadcentres. They are not interchangeable.

In many cases, yes — the QHB220 can serve as a replacement for compatible Square D bolt-on breakers of the same pole and amperage in panelboards that accept the QHB frame. However, you should verify that your panel's busbar accepts the QHB bolt-on mounting configuration and that the 65kAIC rating meets or exceeds the original breaker's spec. Contact us with your panel model and existing breaker part number and we'll help confirm compatibility.

Yes. Square D QHB-series breakers are approved for use in Canada and are CSA-certified, making them compliant with the Canadian Electrical Code (CEC). The 65kAIC interrupting rating meets the requirements of many commercial and light-industrial installations. Always verify with your local authority having jurisdiction (AHJ) if you have application-specific code questions.