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The SIEMENS BQ1B040 is a reliable 1-Pole 40 Amp, 120V bolt-on circuit breaker designed for optimal performance in residential and commercial applications. With a 10kA interrupting capacity, it provides excellent protection against overloads and short circuits. Ideal for various electrical systems, this breaker ensures safety and reliability.
No, they are not interchangeable. The BQ series uses a bolt-on mounting mechanism that physically fastens to the busbar with a screw, while the QP series uses a plug-in clip design. Using the wrong style in a panel can result in a poor connection and a code violation. Always match the breaker type to what your panel was designed for — if you're unsure, send us your panel model and we'll point you in the right direction.
No — the BQ1B040 is rated for 120V, 1-pole operation only. For a 240V circuit you would need a 2-pole breaker from the compatible BQ series (e.g. BQ2B040). Running a 240V load on a 120V-rated breaker is unsafe and non-compliant with the Canadian Electrical Code. Contact us if you need the 2-pole equivalent.
Yes. Northern Breaker Group specialises in obsolete and hard-to-find breakers, and we maintain stock of legacy Siemens BQ bolt-on breakers across our Calgary, Edmonton, and Vancouver locations. If we don't have it on the shelf, we can source it for you. Request a quote and our team will get back to you promptly.
