FA24045AB SQUARE D 2P 45A 277V AB PH I LINE

Standard · 45A · 2-Pole · 277V · Plug-In

The FA24045AB Square D 2-Pole 45A 277V Circuit Breaker is designed for reliable protection in residential and commercial applications. With its robust construction and easy installation, this circuit breaker ensures optimal performance for your electrical systems. Ideal for various setups, it delivers peace of mind with dependable circuit interruption.

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SKU SQDFA24045AB Categories , ,
Specifications
BrandSquare D
TypeStandard (Thermal-Magnetic)
Amperage45 A
Poles2-Pole
Voltage277V
Interrupting Rating18 kA
MountingPlug-In
Frame / SeriesFA
Catalogue #SQDFA24045AB
Panel Compatibility

The Square D FA24045AB is a 2-Pole, 45A, 277V, 18kA plug-in molded-case circuit breaker from Square D's FA (Class 2400) frame. As an industrial/commercial-grade MCCB, it is designed for use in Square D panelboards and switchboards that accept FA-frame plug-in breakers — not residential loadcentres. Typical applications include commercial distribution panels and lighting panelboards operating at 120/240V or 277/480V.

Have a specific panelboard model? Send us your panel details and we'll confirm compatibility.

The FA24045AB is an FA-frame molded-case circuit breaker intended for Square D commercial and industrial panelboards and switchboards that accept FA-frame plug-in breakers. It is not designed for residential QO or Homeline loadcentres. Contact us with your panelboard model number and we'll confirm the fit.

The 'AB' suffix on Square D FA-frame breakers designates the alarm/auxiliary contact option — specifically, it typically indicates a shunt trip or alarm contact accessory factory-fitted to the breaker. If you need a version without this feature, or require a different accessory configuration, let us know and we can help source the right variant.

Square D FA-frame breakers are an older commercial MCCB series and some configurations may be discontinued or hard to find through standard distribution channels. Northern Breaker Group specializes in obsolete and hard-to-find breakers — reach out to our Calgary, Edmonton, or Vancouver counters for availability and a quote.

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