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The BJA34030 Square D 3P 30A 480/277V circuit breaker offers reliable protection for your electrical systems. Designed for high performance, this I-Line breaker has a 65KA interrupting rating, ensuring safety in demanding applications. Ideal for commercial and industrial use, it provides peace of mind with its durable construction and efficient operation.
The BJA34030 uses Square D's I-Line plug-in mounting system, making it compatible with Square D I-Line panelboards and switchboards — such as NF, NQOD, and PH-series equipment designed for I-Line breakers. It is a commercial/industrial MCCB and is not compatible with QO loadcentres or Homeline residential panels. Send us your panel model and we'll confirm the fit.
Square D I-Line BJA-frame breakers can be difficult to source through standard distribution channels. Northern Breaker Group specializes in obsolete and hard-to-find breakers — contact us for current availability and lead time on the BJA34030.
Yes — a breaker rated 480Y/277V is suitable for use on lower-voltage systems such as 208Y/120V or 240V, as the voltage rating is a maximum. The 30A, 3-pole, 65 kA configuration remains valid. Always verify that the interrupting rating meets or exceeds the available fault current at your installation point per applicable Canadian Electrical Code requirements.
