Square D MGL26400 - 400 A, 600 V, 2-Pole Circuit Breaker | AmpState

Protect large branch circuits with precision using the Square D MGL26400—a 400 A, 600 V, 2-pole molded case circuit breaker engineered for dependable protection in panelboards and loadcenters. This device blends compact design with robust performance to safeguard your electrical distribution without sacrificing panel space.

• Two-pole design for simultaneous isolation of both conductors, enhancing safety during disconnect and maintenance.
• 400 A rating at up to 600 V suitable for demanding residential, commercial, and light industrial circuits.
• Thermal-magnetic trip unit delivers stable, repeatable protection for overloads and short circuits, with predictable trip behavior that helps reduce nuisance trips and downtime.
• Compact molded case design maximizes panel space, enabling more efficient layouts in crowded panels and switchboards.
• OEM-compatible designed to plug into matching Square D OEM loadcenters and panelboards for straightforward installation and reliable performance.
• Versatile application ideal for protecting large branch circuits, feeders, and critical loads across residential, commercial, and light industrial environments.

Key uses and scenarios

• Main or feeder protection in service panels and distribution panels where sizable conductors are run.
• Protection for motors, HVAC feeders, and other high-current equipment within commercial and light industrial facilities.
• Retrofit or replacement in existing Square D panelboards to maintain code-compliant circuit protection.

Technical snapshot

• Manufacturer: Square D
• Part Number: MGL26400
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 400 A
• Voltage Rating: 600 V
• Poles: 2
• Application: Branch circuit overcurrent and short-circuit protection

Choosing the MGL26400 means selecting a trusted Square D solution that aligns with your panel infrastructure while delivering dependable protection when it matters most. Install it where reliable current-limiting and quick fault response protect both wiring and connected equipment, and keep your electrical system running smoothly with a component built for professional-grade panel environments.