Square D FA17040MF - 40A, Circuit Breaker

Engineered for dependable overcurrent protection, the Square D FA17040MF delivers a precise 40A rating in a compact circuit breaker designed for demanding electrical environments. It is tailored for panelboards, switchboards, control panels, and OEM equipment, ensuring quick interruption when faults occur and smooth integration into existing systems.

Key strengths of the FA17040MF:

• Current rating: 40A for protecting branch circuits and feeders without nuisance trips.
• Versatile compatibility: Suitable for panelboards, switchboards, control panels, and OEM equipment—ideal for new builds or upgrades.
• Industrial, commercial, OEM ready: Built for environments where dependable overcurrent protection is critical in distribution panels and motor control centers.

Why this 40A breaker matters

When circuits run at capacity, a dedicated 40A breaker like the FA17040MF helps prevent damage from overloads and short circuits, extending equipment life and reducing downtime. By selecting a breaker from the Square D family, you gain consistent performance, predictable tripping behavior, and straightforward maintenance in complex electrical assemblies.

Ideal use cases

• Installing or upgrading panelboards in industrial facilities, commercial buildings, or OEM equipment housings.
• Integrating into motor control centers where reliable overcurrent protection is essential for uptime and safety.
• Retrofits and expansions—adding protection where feeders or distribution circuits are added or reconfigured.

Practical considerations and tips

Ensure the FA17040MF matches the electrical specifications of your distribution panels, and observe proper installation practices to preserve safety and performance. Always verify compatibility with your panel design and follow applicable local codes when replacing or upgrading overcurrent protection devices.