Square D NQOD442L400CU Circuit Breaker, 400A, 240V

Square D NQOD442L400CU circuit breaker is a rugged, industrial-grade protection solution designed to keep heavy electrical systems safe and reliably online. Rated at 400 A and 240 V, this unit is built for the demanding environments of industrial service, maintenance, and replacement projects. Use the exact part number to confirm compatibility with your panel, bus, and wiring requirements.

• Amperage: 400 A — ideal for high‑demand feeders and distribution circuits in manufacturing, warehousing, and other industrial settings
• Voltage: 240 V — suitable for standard industrial distribution panels and equipment circuits
• Part Number: NQOD442L400CU — use this SKU to verify fit and application alignment
• Intended use: specifically designed for industrial service, maintenance, and replacement projects, delivering dependable fault interruption and circuit protection
• Compatibility note: verify fit by part number and application requirements; if you need help matching a part number or confirming compatibility, message us and we’ll assist

This breaker helps facilities minimize downtime by providing precise protection where it matters most—main distribution, feeders, and critical circuits in busy industrial environments. Its build is tailored for ongoing reliability, so maintenance teams and electrical contractors can count on consistent performance during inspections, upgrades, or panel replacements.

Who benefits most: facility managers, electrical contractors, and maintenance personnel working in manufacturing plants, distribution centers, and processing facilities who require a proven 400 A, 240 V protection solution with clear part-number traceability.

Ready to ensure you have the right protection for your system? Confirm compatibility with the exact part number NQOD442L400CU and place your order. If you’re unsure about fit, we’re here to help verify compatibility and guide you to a precise, reliable replacement.