BDA140903 SQUARE D 1P 90A 480V B PH I LINE

Standard · 90A · 1-Pole · 480V · Plug-In

Introducing the BDA140903 Square D 1P 90A 480V B PH I Line circuit breaker, designed for reliable protection and efficient performance in your electrical systems. With a single pole configuration, this 90-amp breaker ensures safe operation for your high-voltage applications. Trust Square D for durability and dependability in every installation.

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SKU SQDBDA140903 Categories , ,
Specifications
BrandSquare D
TypeStandard (Thermal-Magnetic)
Amperage90 A
Poles1-Pole
Voltage480V
Interrupting Rating18 kA
MountingPlug-In
Frame / SeriesBDA
Catalogue #SQDBDA140903
Panel Compatibility

The Square D BDA140903 is a BDA-frame, 1-pole, 90A, 480V plug-in molded-case circuit breaker rated at 18kA interrupting capacity. As a BDA-frame MCCB, it is designed for use in compatible Square D NF, I-Line, and equivalent commercial/industrial panelboards and switchboards that accept BDA-series plug-in breakers — it is not intended for residential QO or Homeline loadcentres. Suitability depends on your specific panelboard's bus rating, frame acceptance, and interrupt requirements. Send us your panelboard model and we'll confirm compatibility.

The BDA140903 is a BDA-frame plug-in MCCB rated for 480V commercial and industrial applications. It is designed for Square D panelboards and switchboards that accept BDA-series plug-in breakers, such as certain I-Line and NF-series enclosures. It is not a residential loadcentre breaker. Share your panelboard model with our team and we'll confirm the fit.

The BDA140903 carries an 18kA symmetrical interrupting rating at 480V. Whether this meets your system's available fault current (AFC) depends on your upstream supply and panel configuration. If your AFC exceeds 18kA, a higher-rated frame may be required. Our specialists can help you assess your system — contact us for guidance.

The Square D BDA-frame series can be difficult to source as availability varies by vintage and configuration. Northern Breaker Group specializes in obsolete and hard-to-find breakers across Canada, with counters in Calgary, Edmonton, and Vancouver. Contact us for a quote and we'll advise on new, reconditioned, or equivalent replacement options.

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