BQ3B030H – SIEMENS 3P30A 240V BOLT ON 22kA BREAKER

The 'H' suffix on the BQ3B030H denotes a higher interrupting rating — specifically 22kA at 240V — compared to the standard 10kA interrupting capacity of the base BQ3B030. If your panelboard is fed from a higher-capacity transformer or is located close to a utility service entrance, the 22kA rating of the 'H' variant is the correct and often code-required choice.

The BQ3B030H is strictly a bolt-on breaker — it fastens mechanically to the bus bar rather than snapping in like a plug-in type. Using a bolt-on breaker in a plug-in-only panel (or vice versa) is not permitted. Check your panel's interior label or door schedule to confirm it calls for bolt-on BQ/BL-series devices before ordering. Not sure? Send us your panel model and we'll verify.

Siemens BQ-series bolt-on breakers can be difficult to locate through general electrical distributors, especially in 3-pole configurations. Northern Breaker Group specialises in hard-to-find and obsolete Siemens/ITE breakers and maintains sourcing networks across Canada. Reach out to our Calgary, Edmonton, or Vancouver counters or submit a quote request online — we'll track down the stock you need.