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The BQ2B050 – SIEMENS 2P50A 240V Bolt On Breaker is a high-performance circuit breaker designed for reliable protection in residential and commercial applications. With a 10kA interrupting capacity, this two-pole, 50 Amp breaker ensures optimal safety and durability. Perfect for integrating into your electrical systems for dependable operation.
No. Bolt-on breakers like the BQ2B050 use a physical screw or clamp to secure the breaker to the bus bar, while plug-in breakers simply clip on. The two mounting styles are not interchangeable. You must use a bolt-on breaker only in a panel that is specifically designed to accept the bolt-on BQ/BL/BA frame. Check your panel's label or send us the model number and we'll verify the correct fit.
The Siemens BQ series can be difficult to source through standard distribution channels. Northern Breaker Group specializes in obsolete and hard-to-find breakers, and we maintain stock of legacy Siemens bolt-on units across our Calgary, Edmonton, and Vancouver locations. Contact us for availability and we'll get you a quote quickly.
For a 50A circuit in Canada (per CEC guidelines), you would typically use #6 AWG copper or #4 AWG aluminum/copper-clad aluminum conductors for the load wires. Always verify conductor sizing with a licensed electrician based on your specific installation conditions, including conduit fill, ambient temperature, and load type.
