Schneider Electric NW40H1 4000A 4 Pole Air Circuit Breaker for Low Voltage Power Distribution Systems

Schneider Electric NW40H1 4000A 4-Pole Air Circuit Breaker is a heavy-duty protection and switching solution engineered for reliable performance in low-voltage power distribution systems across industrial and commercial facilities. Built to handle demanding environments, this breaker delivers strong fault interruption and precise control when it’s most needed.

Key reasons to choose NW40H1 include its robust 4000A interrupting capacity and a 4-pole configuration, making it ideal for 3-phase systems with a neutral. It’s specifically designed for main incoming feeders and switchboards, where dependable protection and rapid fault isolation protect downstream equipment and maintain critical operations.

• Current Rating: 4000A for substantial fault current handling in large facilities
• Poles: 4-Pole to support 3-phase systems with neutral, ensuring synchronized disconnection of all conductors
• Breaker Type: Air Circuit Breaker, offering proven reliability and straightforward maintenance in industrial settings
• Adjustable Trip Settings to tailor protection curves and coordinate with upstream and downstream devices
• Well-suited for main incoming feeders and switchboards where uptime and precise protection are essential

What problems does the NW40H1 solve?

When fault currents surge, the NW40H1 acts quickly to interrupt and isolate the fault, reducing the risk of damage to transformers, motors, and other critical equipment. The adjustable trip settings empower you to fine-tune protection to your specific system, enabling precise coordination with upstream feeders and downstream devices to minimize unnecessary outages while maintaining strong safety margins.

Ideal use cases

• Main incoming feeders feeding large switchboards in industrial facilities
• Critical power distribution in manufacturing and processing plants where reliable protection is non-negotiable
• Commercial buildings with substantial electrical loads that require robust fault interruption capability

Why this matters for your operation

Choosing the Schneider Electric NW40H1 means pairing a trusted, proven air circuit breaker with a design purpose-built for heavy-duty low-voltage protection. The combination of 4000A interrupting capacity and a four-pole layout delivers fast fault clearance and safer isolation across all phases, helping reduce downtime, protect expensive equipment, and support safer, more reliable electrical distribution.

Practical deployment guidance

• Plan trip settings to align with your protection coordination study, ensuring quick clearance without unnecessary trips
• Confirm wiring and enclosure compatibility for a seamless installation in main feeders or switchboards
• Schedule periodic verification of trip functions and mechanical operation as part of routine maintenance

Ready to elevate your low-voltage power distribution with a trusted Schneider Electric solution? The NW40H1 4000A 4-Pole Air Circuit Breaker is designed to deliver dependable protection, precise coordination, and lasting performance for demanding industrial and commercial environments.