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The FA24040BC Square D 2-Pole 40A 277V BC PH I Line circuit breaker is designed for reliable protection and efficient performance in electrical systems. Ideal for commercial and industrial applications, this breaker features a compact design and robust construction, ensuring safety and durability. Perfect for your circuit protection needs.
"BC" stands for bolt-on construction, meaning this breaker uses a bolt-on mounting method to connect directly to the panelboard bus. This is common in commercial and industrial Square D panelboards and provides a more secure mechanical and electrical connection compared to plug-on styles.
Square D's FA-frame series has largely been superseded by newer MCCB lines, making some variants hard to find through standard distribution channels. Northern Breaker Group specializes in obsolete and hard-to-find breakers — contact our Calgary, Edmonton, or Vancouver locations or request a quote online and we'll track down available stock for you.
Yes — a breaker rated for 277V AC is suitable for use on lower-voltage systems such as 208V or 240V, as the rating represents the maximum voltage it is approved to interrupt. Always verify that the interrupt rating (18kA) meets or exceeds the available fault current at your installation point, and consult your panelboard documentation for any additional requirements.
