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The GE THHQB2120 is a reliable 2-pole, 20A, 240V bolt-in breaker designed to handle up to 22kA of interrupting capacity. This circuit breaker ensures optimal performance and safety for your electrical systems, making it ideal for both residential and commercial applications. Trust in GE quality for your circuit protection needs.
The THHQB2120 and THQB2120 are both 2-pole, 20A, 240V bolt-on GE breakers, but they differ in interrupting capacity. The THHQB2120 carries a higher 22kA interrupting rating, making it suitable for installations with greater available fault current, such as commercial panelboards or panels fed closer to the utility transformer. The THQB series typically has a lower kA rating. Always verify your panel's required interrupting capacity before selecting a replacement.
GE's breaker product lines have undergone transitions over the years, and certain THHQB series breakers can be difficult to find through standard distribution channels. Northern Breaker Group specializes in obsolete and hard-to-find breakers and maintains access to new, reconditioned, and surplus stock. Contact our Calgary, Edmonton, or Vancouver counter for current availability and to request a quote.
Yes — the THHQB2120's 2-pole, 240V configuration and 22kA interrupting capacity make it appropriate for protecting 240V branch circuits or sub-feed applications in compatible GE bolt-on panelboards. Ensure the panelboard's bus rating and available fault current align with the breaker's 20A continuous rating and 22kA AIC. If you're unsure whether your panelboard is compatible, share the panel model with our team and we'll verify the fit.
