Square D FA340151021 15A 3P 480V Circuit Breaker | AmpState

Meet the Square D FA340151021, a 15 A, 3-pole, 480 V circuit breaker designed for dependable protection in panelboards, load centers, and broader electrical distribution systems. Built for everyday electrical work, this unit is a trusted drop-in replacement that helps keep your BOM aligned with the original part number, reducing install surprises and stocking headaches.

Why this breaker stands out in real-world installations:

• Three-pole (3P) configuration provides balanced protection across all phases in three‑phase networks, delivering consistent trip behavior and enhanced reliability.
• 15 ampere rated for precise current protection on branch circuits that require predictable, non-disruptive operation.
• 480 V compatibility suits medium-voltage distribution scenarios found in commercial and industrial environments, helping you protect equipment without undersizing breakers.
• Original part number alignment with FA340151021 ensures seamless BOM compatibility, simplifies spare stocking, and minimizes change management during replacements.
• Panelboard and load center suitability—a practical choice for maintenance projects and upgrades where exact part match matters for safety and compliance.
• AmpState availability and support—expert assistance to confirm fit and compatibility when you’re aligning parts with existing installations.

Practical use cases you’ll appreciate:

• Replacing aged or failed breakers in three-phase commercial panels or industrial control rooms without altering the rest of the distribution network.
• Procuring a reliable spare that mirrors the original BOM to avoid mismatches during field service or warehouse stocking.
• Upgrading from smaller single- or two-pole breakers in three-phase setups, while preserving correct protection levels and wiring configurations.

Specifications at a glance

• Manufacturer: Square D
• Part Number: FA340151021
• Product Type: Circuit Breaker
• Amperage: 15 A
• Poles: 3
• Voltage: 480V

Now available from AmpState. If you’re unsure about fit or compatibility with your panel or distribution setup, feel free to message us and we’ll help you confirm the right part for your application.