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The BQ3B090 Siemens 3P90A 240V Bolt-On Breaker is designed for reliable circuit protection in industrial and commercial applications. With a robust 10kA interrupting capacity, this three-pole breaker ensures optimal safety and performance. Ideal for various installations, it offers easy mounting and dependable operation for all your electrical needs.
No, they are not interchangeable. The BQ series uses a bolt-on mounting that mechanically fastens to the bus bar with screws, while the QP series uses a plug-in (clip-on) connection. Your panelboard must be specifically designed to accept bolt-on breakers; installing a plug-in breaker in a bolt-on panel (or vice versa) is unsafe and non-compliant with CEC installation requirements.
The BQ3B090 is rated for 240V AC. While 208V falls within that ceiling, you should verify the breaker's full voltage rating label and ensure your specific application and AHJ (Authority Having Jurisdiction) accept this breaker for use on a 208Y/120V system. Contact us or your local electrical inspector if you need clarification for your installation.
Yes — sourcing obsolete and hard-to-find Siemens breakers like the BQ3B090 is a core specialty of Northern Breaker Group. Availability and lead times vary depending on current stock levels. Reach out to our Calgary, Edmonton, or Vancouver counter or submit a quote request online and our team will provide up-to-date availability and lead time information promptly.
