B120– SIEMENS (BL) 1P 20A 120V BOLT ON 10kA BREAKER

The BL series uses a bolt-on mounting, where the breaker is physically bolted to the bus bar — providing a more secure connection often required in commercial panelboards or panels subject to vibration. The QP series is a plug-in design for standard residential loadcentres. The two types are not interchangeable, so it's important to match the breaker style to your panel's bus configuration.

Yes — the B120 is rated 1-pole, 20A, 120V with a 10kA interrupting capacity, which meets the requirements for standard 120V branch circuits (e.g., kitchen appliances, bathrooms) in Canadian residential and light commercial installations per the Canadian Electrical Code. Always verify your panel's accepted breaker type before installing.

Siemens BL-series bolt-on breakers have seen limited availability as product lines evolve. Northern Breaker Group specializes in obsolete and hard-to-find breakers — if the B120 is no longer in regular production, we maintain stock of new, reconditioned, and new-old-stock units. Contact our Calgary, Edmonton, or Vancouver counters or request a quote online for current availability.