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    • BDA140403 SQUARE D 1P 40A 480V B PH I LINE

    Standard · 40A · 1-Pole · 480V · Plug-In

    The BDA140403 SQUARE D 1P 40A 480V B PH I LINE is a high-performance single-pole circuit breaker designed for reliable protection in electrical systems. Offering a current rating of 40A at 480V, this breaker ensures safety and efficiency for various applications. Perfect for commercial and industrial use. Durable and dependable.

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    SKU SQDBDA140403 Categories , ,
    Specifications
    BrandSquare D
    TypeStandard (Thermal-Magnetic)
    Amperage40 A
    Poles1-Pole
    Voltage480V
    Interrupting Rating18 kA
    MountingPlug-In
    Frame / SeriesBDA
    Catalogue #SQDBDA140403
    Panel Compatibility

    The Square D BDA140403 is a BDA-frame, 1-pole plug-in breaker rated 40A / 480V / 18kA, intended for commercial and industrial panelboards that accept the BDA plug-in frame — not for residential QO or Homeline loadcentres. It is suited for Square D NQ, NQOD, and I-Line–compatible panelboards designed for the BDA series. The 480V rating and 18kA interrupting capacity make it appropriate for light commercial and industrial branch-circuit protection.

    Panel and switchboard fit varies by enclosure series and bus configuration. Send us your panel model number and we'll confirm compatibility before you order.

    The BDA140403 is a BDA-frame plug-in breaker rated for 480V commercial and industrial panelboards — such as Square D NQ/NQOD series enclosures designed for BDA-frame plug-in devices. It is not interchangeable with QO or Homeline residential loadcentres. Share your panel model with us and we'll confirm the exact fit.

    Yes. The BDA140403 is rated 480V / 40A / 1-pole with an 18kA interrupting rating, making it suitable for single-phase branch circuits on 480V systems common in Canadian commercial and light industrial installations. Always verify that the available fault current at the point of installation does not exceed the 18kA AIC rating.

    Northern Breaker Group specialises in obsolete and hard-to-find breakers. The BDA frame is an older Square D series, but we regularly carry new-old-stock and reconditioned units. Contact our Calgary, Edmonton, or Vancouver counters or submit a quote request and our team will advise on availability and lead time.

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    Contact Northern Breaker Group

    Experience the advantage of working with Canada's fastest growing electrical supply network—where local expertise meets national capabilities.
    Whether you’re a contractor needing same-day pickup in Calgary, an facility manager sourcing obsolete parts in Edmonton, or a Vancouver electrician requiring marine-rated components, Northern Breaker Group is your trusted electrical supply partner.

    For General Inquiries:

    Visit any of our three locations or use our online quote system to connect with the Northern Breaker Group network.

    For Location-Specific Needs:

    Calgary: 403-520-0014

    Edmonton: 780-758-6122

    Vancouver: 604-283-6336

    Reach out to us today to discuss your needs.