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The SQDQHB120 is a reliable Single Pole 20 Amp Circuit Breaker from Square D, designed for a 65K bolt-on application. This high-performance breaker ensures optimal safety and durability, making it ideal for residential and commercial environments. Perfect for protecting your electrical circuits and providing peace of mind in your installations.
The key difference is the mounting style and interrupting rating. The SQDQHB120 is a bolt-on breaker with a 65kA interrupting rating, whereas the Square D QO120 is a plug-in type typically rated at 10kA. The QHB is designed for commercial-grade panelboards that require bolt-on connections and higher fault-current protection — the two are not interchangeable.
The QHB series can be difficult to source through standard retail channels, especially in Western Canada. Northern Breaker Group specializes in obsolete and hard-to-find breakers and maintains stock of commercial Square D breakers for customers across Calgary, Edmonton, and Vancouver. Contact us for current availability.
No — the QHB bolt-on series is not compatible with Square D QO plug-in loadcentres or Homeline panels. It is intended for bolt-on commercial panelboards. Installing the wrong breaker type can create a safety hazard and may not meet Canadian Electrical Code requirements. If you're unsure of your panel type, send us your panel model and we'll confirm the correct breaker for your application.
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