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The SIEBQ2B100H is a Siemens 2-Pole 100 Amp Bolt-On Circuit Breaker, designed for reliable performance with a 22kAIC for superior circuit protection. Perfect for various applications, this breaker ensures optimal safety and functionality. Ideal for residential and commercial environments, it’s a smart choice for dependable electrical management.
The BQ series uses a bolt-on connection to the bus bar, secured with a fastener, which provides a more rigid mechanical and electrical connection — commonly specified in commercial panelboards or older residential loadcentres that require bolt-on breakers. The QP series is a plug-in design intended for Siemens EQ/ES plug-in loadcentres. The two types are not interchangeable, so it's important to match the breaker style to your panel's busbar design.
Yes — a 2-pole 100A bolt-on breaker like the SIEBQ2B100H is commonly used as the main disconnect breaker in a subpanel or secondary distribution panel, provided the panel accepts BQ bolt-on breakers and is rated for 100A. Always verify the panel's maximum main breaker rating and confirm with a licensed electrician that the installation meets local Canadian Electrical Code (CEC) requirements.
Siemens BQ-series bolt-on breakers have seen limited availability in certain markets. Northern Breaker Group specialises in hard-to-find and obsolete breakers across Canada, with counter locations in Calgary, Edmonton, and Vancouver. Whether new old stock or a verified equivalent is needed, contact us with your requirements and we'll work to source the right unit for you.
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