Square D FAL340451021 45A 3P 480V Circuit Breaker | AmpState

The Square D FAL340451021 is a robust circuit breaker for protective applications in panelboards, load centers, and electrical distribution networks. With a 45 A rating, three poles, and 480V operation, it is designed to reliably interrupt fault currents in three-phase systems, protecting motors, drives, and feeders in demanding commercial and industrial environments. This specific part number is ideal for retrofit work where maintaining a consistent kit of components matters for maintenance planning and asset management.

Specifications at a glance

• Part Number: FAL340451021
• Manufacturer: Square D
• Amperage: 45 A
• Poles: 3
• Voltage: 480V
• Product Type: Circuit Breaker
• Applications: Panelboards, Load Centers, Electrical Distribution
• Availability: AmpState

Why this model matters

In three-phase systems, a 3P 480V circuit breaker like the FAL340451021 provides synchronized protection across all phases. Using the exact part number aids in keeping your electrical distribution organized, simplifies maintenance scheduling, and reduces the risk of mismatched replacements during service outages. Square D builds reliability into every unit, designed to fit standard Square D enclosures and mounting patterns.

Ideal for

• Electrical contractors conducting panel retrofits or upgrades in facilities with 480V three-phase distribution
• Facilities managers stocking spare parts to minimize downtime during maintenance
• Industrial environments where consistent, three-pole protection is essential for motor loads and feeders

Use cases and practical applications

• Replacing a failed 3P 480V circuit breaker in a commercial or light-industrial panel
• Standardizing replacement parts across multiple panels to streamline service procedures
• Planning preventive maintenance with a readily identifiable, return-to-stock part number

Compatibility and support

Not sure this is the right fit for your panel? AmpState offers support to confirm compatibility with your enclosure and bus configuration. If you need help matching a part number or verifying fit, contact AmpState and their team will assist you in validating the connection and specifications.

Ready to secure dependable protection for your 480V three-phase distribution? The Square D FAL340451021 45A 3P 480V Circuit Breaker is available from AmpState and ready to ship.