Square D LC26400AB Circuit Breaker, 400A, 2-Pole, 600V

Engineered for high-demand environments, the Square D LC26400AB is a 2-pole circuit breaker rated at 400 A and designed to interrupt up to 600 V. This unit is purpose-built for industrial service, maintenance, and replacement projects, delivering dependable protection for large feeders and critical circuits in panelboards and switchgear.

• High-current capability: 400 A rating supports heavy-load feeders and motor circuits without frequent tripping.
• Two-pole construction: Protects two conductors simultaneously, simplifying installation in multi-wire systems.
• 600 V maximum voltage: Suitable for industrial distribution networks and higher-voltage equipment common in factories and facilities.
• Brand and compatibility: Part of Square D’s trusted line; designed to fit Square D panels and compatible equipment. Use the exact part number LC26400AB to confirm fit for your application.
• Reliable replacement option: Ideal for retrofits and replacements, helping you minimize downtime and keep existing infrastructure up to date.

Practical use cases

• New installations: protect large feeders and essential lines in manufacturing floors or processing equipment.
• Retrofits and upgrades: replace aging breakers with a current-capacity LC26400AB to support upgraded loads.
• Maintenance cycles: keep spare parts on hand for quick field service without waiting for backorders.
• Replacement in existing Square D systems: ensured compatibility and performance within established electrical layouts.

Verification and support

Important: verify fit by part number LC26400AB and assess application requirements before ordering. If you need help confirming compatibility or selecting the right protective device for your system, our team can assist—reach out with your panel model and voltage context, and we’ll guide you to a precise match.