FA12050A SQUARE D 1P 50A 120/240V A PH I LINE

The FA12050A belongs to Square D's FA molded-case frame series, which is designed for commercial and industrial panelboards — typically Square D NF and NQ series panelboards that accept plug-in FA-frame breakers. It is not a residential QO or Homeline breaker. Because compatibility depends on your specific panel's bus and frame configuration, we recommend sending us your panelboard model number so we can confirm the fit.

Availability of specific FA-frame configurations can vary. Northern Breaker Group specialises in obsolete and hard-to-find breakers, so even if the FA12050A is no longer in current production, we can often source new-old-stock or factory-reconditioned units. Contact us or visit one of our Calgary, Edmonton, or Vancouver counters for a quote.

For a like-for-like replacement, you'll want to verify that the replacement breaker matches the original in frame (FA), poles (1P), amperage (50A), voltage rating (120/240V), and interrupting rating (10kA minimum). You should also confirm that the FA-frame plug-in configuration matches your panel's bus. If you're unsure, note the model number of the breaker being replaced and your panelboard details, and our team can verify compatibility before you order.