Square D | FAL340401121 | Circuit Breaker | 40A | 3-Pole | 480V

The Square D FAL340401121 circuit breaker is a purpose-built 40A, 3-pole unit designed for 480V three-phase systems. Engineered for reliability in maintenance, retrofit, and replacement projects, this genuine Square D component delivers precise protection where exact specifications matter and downtime isn’t an option.

Key specifications at a glance

• Amperage: 40A
• Poles: 3-Pole
• Voltage: 480V
• Part number: FAL340401121

Why this exact part matters

Using the precise part number FAL340401121 ensures seamless compatibility with compatible Square D panels and distribution gear. This isn’t a generic replacement — it’s a calibrated protection device designed to align with the mounting footprint, trip characteristics, and electrical interface required by many industrial installations. For ongoing maintenance or future replacements, having the exact model on hand minimizes uncertainty and speeds up service calls.

Ideal use cases

• Maintenance and service on 480V, three-phase electrical networks in manufacturing, processing, or commercial facilities
• Retrofits where upgrading to a 40A, 3-pole protection device is necessary to meet updated load profiles
• Replacement for aging or failed breakers that previously protected similar 3-pole, 480V circuits
• New installations in systems configured for 480V three-phase distribution requiring reliable circuit protection

Practical considerations and installation tips

• Always confirm compatibility by matching the exact part number (FAL340401121) with your panel model and bus configuration before ordering
• Verify that the circuit feeds a 480V three-phase load and that 40A is the correct protective setting for the protected circuit
• When replacing, power down the equipment and follow proper lockout/tagout procedures; ensure the mounting and electrical connections align with the original unit
• Keep the part number handy for future reorder needs and quick field verification during maintenance calls

Who benefits from this Square D circuit breaker

• Facilities managers overseeing industrial power distribution with 480V, three-phase systems
• Electrical contractors performing panel upgrades, retrofits, or component replacements
• Maintenance technicians seeking reliable, exact-match protection for critical equipment

With the FAL340401121, you’re choosing a genuine Square D component that prioritizes precise compatibility, straightforward installation, and dependable protection for your 480V, three-phase infrastructure. If your project specifies 40A, 3-pole protection in a 480V environment, this part is designed to meet those exact requirements and keep your electrical system performing consistently.