Schneider Electric NW40H2 4000A 4 Pole Air Circuit Breaker For Low Voltage Power Distribution Systems

Meet the Schneider Electric NW40H2 4000A 4-Pole Air Circuit Breaker — a rugged, high-capacity protective device engineered for reliable switching and fault protection in low-voltage power distribution systems. Built to handle demanding industrial and commercial environments, this 4-pole air circuit breaker delivers precise coordination for essential feeders while maintaining safe, clean power flow.

Why the NW40H2 stands out — a combination of power, precision, and practical design that answers real industry needs. With a 4000 A current rating and a four-pole configuration, it provides comprehensive protection for three-phase systems with a dedicated neutral, simplifying panel design and improving fault discrimination. Its air-based interrupt mechanism is built for durability in installations where reliability and quick isolation are critical.

• High interruption capacity: 4000 A rating ensures robust fault isolation for major feeders and switchboards, minimizing downtime during short circuits.
• 4-Pole configuration: Three live phases plus a neutral strap in a single unit, delivering complete protection for modern 4-wire low-voltage distributions.
• Low-voltage distribution specialist: Specifically designed for main incoming feeders and critical power distribution points in industrial facilities and large commercial sites.
• Adjustable trip settings: Tailor the protection curve to your system coordination needs, helping reduce nuisance trips while maintaining fast response to genuine faults.
• Reliable switching: Engineered for consistent performance in everyday operation, with components optimized for longevity under heavy loads.

This NW40H2 model is ideal for main incoming feeders, switchboards, and other key nodes in low-voltage power distribution where dependable protection and controlled interruption are non-negotiable. Whether you’re upgrading aging infrastructure, expanding a facility, or specifying gear for a new build, this breaker helps ensure power integrity across critical loads.

Practical use cases:

• Protecting large data centers where uptime hinges on precise feeder protection and fast fault clearance.
• Guarding manufacturing lines with high transient currents and demanding startup sequences.
• Securing commercial buildings with complex 3-phase power layouts requiring reliable main protection.

Choosing the NW40H2 means opting for a workhorse that aligns with real-world electrical distribution needs: clear, coordinated protection for main feeders, straightforward integration into switchgear, and the peace of mind that comes from Schneider Electric’s reputation for dependable power management.