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    • BDA140503 SQUARE D 1P 50A 480V B PH I LINE

    Standard · 50A · 1-Pole · 480V · Plug-In

    The BDA140503 SQUARE D 1P 50A 480V B PH I LINE is a high-quality circuit breaker designed for reliable performance in various applications. This single-pole breaker features a 50-amp capacity and is rated for 480 volts, ensuring efficient protection for your electrical systems. Ideal for commercial and industrial use.

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    SKU SQDBDA140503 Categories , ,
    Specifications
    BrandSquare D
    TypeStandard (Thermal-Magnetic)
    Amperage50 A
    Poles1-Pole
    Voltage480V
    Interrupting Rating18 kA
    MountingPlug-In
    Frame / SeriesBDA
    Catalogue #SQDBDA140503
    Panel Compatibility

    The Square D BDA140503 is a BDA-frame, plug-in style molded-case circuit breaker rated 1-pole, 50A, 480V, 18kA. As an industrial/commercial MCCB, it is designed to mount in compatible Square D panelboards and switchboards that accept BDA-frame plug-in breakers — not residential loadcentres. It is suited for Phase I Line (B phase) configurations in commercial and light-industrial distribution equipment.

    Send us your panelboard model and we'll confirm fitment for your application.

    The BDA140503 is a BDA-frame plug-in molded-case breaker intended for commercial and industrial Square D panelboards and switchboards that accept BDA-frame devices. It is not compatible with residential QO or Homeline loadcentres. Contact us with your panelboard model and we can confirm the correct fit.

    The Square D BDA-frame series is considered legacy/obsolete in many configurations. Northern Breaker Group specializes in hard-to-find and obsolete breakers, and we frequently stock or can source BDA-frame units like the BDA140503. Reach out to one of our Calgary, Edmonton, or Vancouver counters for current availability.

    The BDA140503 is rated at 480V, which means it is approved for use on systems up to 480V AC. It can generally be applied on lower-voltage systems (such as 120/240V or 208V), as breakers are rated at their maximum voltage — however, always verify with your system design and applicable Canadian Electrical Code (CEC) requirements before installation.

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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.

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