- Monday - Friday 07:00 AM - 04:30 PM
The BDA140451 SQUARE D 1P 45A 480V A PH I LINE is a high-quality single-pole circuit breaker designed for reliable protection in electrical systems. With a capacity of 45 amps and 480 volts, this durable breaker ensures safety and efficiency for various applications. Perfect for residential and commercial use.
No, they cannot be interchanged. The BDA frame is rated for 480V industrial and commercial panelboard applications, while QO/QOB breakers are rated for 120/240V residential loadcentres. The mounting footprints, voltage ratings, and interrupting capacities are different, so the two series are not cross-compatible.
The Square D BDA series is a legacy line and certain ratings can be difficult to source through standard distribution channels. Northern Breaker Group specialises in obsolete and hard-to-find breakers — contact us or request a quote and we'll advise on current stock or a compatible replacement if the exact unit is unavailable.
It depends on the available fault current (AFC) at the point of installation. The CEC requires that the breaker's interrupting rating equal or exceed the AFC of the circuit. At 18kA, this breaker is suitable for many commercial and light-industrial feeders, but you should verify the AFC with a short-circuit study. If your system fault current exceeds 18kA, a higher-rated frame will be required — our team can help identify the right option.
