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The QOB325VH is a heavy-duty Square D 3-pole circuit breaker designed for reliable protection in demanding applications. With a 25A rating at 240V and a high interrupting capacity of 22kA, this bolt-on breaker ensures enhanced safety and efficiency. Ideal for commercial and industrial setups, it guarantees dependable performance.
The key difference is the mounting style. The QOB325VH is a bolt-on breaker, meaning it fastens mechanically to the bus bar with a bolt, making it better suited for commercial and industrial panelboards where vibration resistance and a secure connection are priorities. The standard QO325 is a plug-on (snap-in) type used in residential QO loadcentres. Always confirm your panel accepts bolt-on devices before ordering.
Square D has periodically updated its QOB lineup. If the QOB325VH is no longer in current production, Northern Breaker Group specializes in sourcing obsolete and hard-to-find breakers from verified stock. Contact our Calgary, Edmonton, or Vancouver counters and we'll check availability or identify a factory-approved equivalent.
Under the Canadian Electrical Code (CEC), the breaker's interrupting rating must equal or exceed the available fault current (AFC) at the point of installation. The QOB325VH is rated at 22kA, which satisfies the majority of commercial distribution scenarios. However, you should have a qualified electrician verify the AFC at your panel before installation to ensure compliance.
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