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The BJA34080 from Square D is a 3-pole circuit breaker rated at 80A, suitable for 480/277V applications. With a remarkable short-circuit current rating of 65KA, this I-Line breaker ensures robust protection for your electrical systems. Ideal for commercial or industrial installations, it combines reliability with superior performance.
The BJA34080 uses Square D's I-Line plug-in mounting system, so it is compatible with Square D I-Line panelboards and switchboards designed to accept I-Line plug-in breakers. It is a commercial/industrial MCCB and will not fit residential QO or Homeline loadcentres. If you're unsure whether your panelboard is I-Line compatible, share the panel model with us and we'll verify before you order.
The Square D BJA frame series is considered a legacy/hard-to-find product line. Northern Breaker Group specialises in obsolete and difficult-to-source breakers, so we can often locate the BJA34080 when other suppliers cannot. Contact one of our Calgary, Edmonton, or Vancouver counters or request a quote online — we'll let you know current availability and lead time.
The BJA34080 is rated for 480/277V AC (3-phase/single-phase). It can generally be applied at lower voltages (e.g., 208Y/120V or 240V) since the voltage rating is a maximum, but you should verify that the 65kA interrupt rating is adequate for the available fault current at your specific voltage and system configuration. We recommend consulting your engineer or having our team review your application to ensure the breaker is correctly applied.
