Square D FA26040AB - 40A, 2-Pole, Circuit Breaker

Meet the Square D FA26040AB — a rugged 40A, 2-pole circuit breaker designed to deliver dependable overcurrent protection and safe operation in demanding electrical environments.

Engineered for panelboards, switchboards, and control panels, this FA-series breaker provides a robust line of defense where uptime and safety matter most. The two-pole design ensures both hot conductors disconnect together, reducing exposure to fault conditions on 240V and multi-wire circuits common in industrial and commercial settings. This is the reliable choice for protecting downstream equipment and wiring from overloads and short circuits.

Key advantages

• 40A current rating provides precise protection for branch circuits and motor loads, while maintaining consistent performance during normal operation
• 2-pole configuration enables simultaneous disconnection of both circuits, enhancing safety for motors, feeders, and critical control panels
• Ideal for industrial, commercial, and OEM applications, including distribution panels and motor control centers
• Designed to meet the demanding requirements of real-world electrical installations, supporting reliable protection in everyday use

Specifications at a glance

• Current rating: 40A
• Poles: 2-Pole
• Breaker type: Circuit Breaker

Practical use scenarios

Protect a 2-pole 40A circuit feeding a motor or a 40A branch circuit in a panelboard. Use in switchboards to quickly isolate faults across two hot lines. In OEM equipment, the FA26040AB provides consistent protection where dual-line interruption is required, reducing downtime and safeguarding wiring and components.

Installation and safety notes

Install in accordance with local electrical codes and the equipment manufacturer’s guidelines. Ensure secure terminations and clear labeling to support safe maintenance. Replace only with the same FA-series 2-pole circuit breaker to preserve the intended protection characteristics.