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The BQ3B045 is a high-performance Siemens 3-Pole 45 Amp 240V Bolt-On Circuit Breaker with a 10kA interrupting capacity. Designed for reliable overload and short-circuit protection, this breaker is ideal for various applications, including residential and commercial systems. Invest in safety and efficiency with this durable and dependable circuit breaker.
The BQ3B045 is engineered for Siemens/ITE panelboards that use bolt-on style breakers, such as certain EQ, ES, PL, and PN series loadcentres. Because bolt-on compatibility depends on the specific panel revision, we recommend confirming with your panel's model number — contact our team and we'll verify the fit.
Yes, it matters significantly. A bolt-on breaker (like the BQ3B045) is mechanically fastened to the bus bar with a screw, providing a more secure connection — commonly required in commercial applications or where vibration is a concern. It is NOT interchangeable with plug-in style breakers, even within the same brand. Always verify your panel accepts bolt-on breakers before ordering.
Availability of specific Siemens BQ series breakers can vary. Northern Breaker Group specializes in obsolete and hard-to-find breakers, so even if the BQ3B045 is discontinued or has limited availability through standard channels, we can often source new, reconditioned, or equivalent units. Contact our Calgary, Edmonton, or Vancouver counters for a quote and availability check.
