Square D FAL14040 - 40 A, 1-Pole Circuit Breaker | AmpState

Square D FAL14040 is a 40-amp, 1-pole molded case circuit breaker designed for dependable branch circuit overcurrent and short-circuit protection in panelboards and loadcenters. This thermal-magnetic breaker delivers stable, repeatable protection across varying loads and temperatures, helping prevent nuisance trips while safeguarding wiring and connected devices. Available from AmpState as part of Square D protection lineup.

• Compact molded case design saves valuable panel space, enabling denser, cleaner installations in both new builds and panel upgrades.
• Thermal-magnetic trip unit provides accurate response to both overloads and short circuits, with a trip characteristic that remains reliable over time.
• OEM-compatible fit specifically engineered to work with matching Square D OEM loadcenters and panelboards, ensuring reliable electrical performance and easy replacement.
• Versatile applications suitable for residential, commercial, and light industrial panel configurations where a single-pole protection is needed.
• Focused protection safeguards individual branch circuits, reducing risk to wiring, appliances, and occupants.

Specifications

• Manufacturer: Square D
• Part Number: FAL14040
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 40 A
• Number of Poles: 1
• Application: Branch circuit overcurrent and short-circuit protection

Use cases and installation considerations

Use this 1-pole breaker in Square D panelboards and loadcenters that specify the FAL series for branch circuit protections such as lighting circuits, receptacle runs, or dedicated equipment feeds. It’s an ideal upgrade or replacement for aging panels, offering reliable protection for critical circuits in homes, small offices, retail spaces, and light manufacturing environments. Always reference your panel’s documentation to confirm compatibility with the FAL family and follow standard electrical safety practices during installation and servicing.

With its combination of compact design, precise thermal-magnetic protection, and OEM-grade compatibility, the Square D FAL14040 is a practical, long-term solution for safeguarding your electrical distribution. Add it to your toolkit for a dependable, ready-to-install protection option that you can trust in a range of settings.