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The NB40 – Federal Pioneer 1P40A 120/240V Bolt On Breaker is a reliable and efficient choice for your electrical needs. With a compact design and a robust 10kA interrupting capacity, this single-pole circuit breaker offers superior performance and protection. Ideal for residential and commercial applications, ensuring safety and reliability in any system.
The NB40 is a bolt-on breaker from Federal Pioneer's NB series, designed for use in Federal Pioneer Stab-Lok panelboards that accept bolt-on style breakers. Because Stab-Lok panels came in several configurations, we recommend sending us your panel's model number so we can confirm exact compatibility before you order.
Federal Pioneer breakers, including the NB series, are no longer in active production. However, Northern Breaker Group specialises in obsolete and hard-to-find breakers — we maintain stock of Federal Pioneer NB series breakers to support legacy panel maintenance and replacements across Canada. Contact us or visit one of our Calgary, Edmonton, or Vancouver counters for availability.
Yes — provided your existing panel accepts bolt-on style Federal Pioneer NB series breakers, the NB40 (1-pole, 40A, 120/240V, 10kA) is a like-for-like replacement. Always verify the amperage, pole configuration, and bolt-on compatibility of the original breaker match before installation, and ensure the 10kA interrupting rating meets or exceeds your panel's fault current requirements. When in doubt, our team can help you cross-reference your original breaker.
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