Square D FI26040AB 26040A 2-Pole 600 V Circuit Breaker

Square D FI26040AB 2-Pole 600 V Circuit Breaker delivers dependable overcurrent protection for high-voltage installations. Identified by Part Number FI26040AB, this 2-pole device safeguards two hot lines in 600-volt distribution panels, helping prevent damage from overloads and faults. With a listed current rating of 26040 A, it provides robust interruption capability for demanding commercial and industrial applications.

Key specifications

• Brand: Square D
• Part Number: FI26040AB
• Current rating: 26040 A
• Poles: 2
• Voltage rating: 600 V
• Type: 2-Pole Circuit Breaker

Why this model stands out

This FI26040AB two-pole design protects both conductors in a 600 V system, ensuring simultaneous disconnection of lines when a fault occurs. Built for compatibility with Square D panels and distribution systems that require a 2-pole, 600 V breaker, it offers a straightforward replacement path for existing installations and reliable long-term performance in demanding environments.

Ideal applications

Best suited for industrial and commercial settings where 600 V circuits are common. Use cases include protecting feeders in high-voltage panels, safeguarding two-wire motor circuits, and providing dependable protection in electrical rooms and equipment rooms that rely on two-pole interruption for safety and equipment integrity.

Installation and compatibility tips

• Confirm that your panel or enclosure is compatible with FI26040AB 2-Pole breakers and supports a 600 V rating.
• Ensure the current rating matches the circuit requirements to avoid nuisance trips or insufficient protection.
• Follow the panel’s installation instructions for proper seating and alignment of the breaker to maintain reliable performance.