Schneider Electric | NSX400L-4P | Circuit Breaker | 400A | 4-Pole | 415V

Schneider Electric NSX400L-4P is a robust 400 Amp, 4-pole circuit breaker engineered for demanding industrial power distribution at 415V. Designed for maintenance, retrofit, or replacement projects, this unit provides a precise match to existing NSX gear, ensuring seamless integration and uninterrupted protection where exact specifications matter.

• Current rating: 400 A — powerful protection for heavy loads in manufacturing lines, processing plants, or large equipment rooms.
• Poles: 4-Pole — protects all three phases plus neutral in 3-phase, 4-wire systems, delivering balanced, reliable interruption across the network.
• Voltage rating: 415V — compatible with common industrial and European distribution schemes.
• Compatibility: The NSX400L-4P part number is the most reliable reference for fit, making it the preferred choice for replacements or retrofits within Schneider Electric NSX-based panels and switchgear.
• Series and reliability: Part of the trusted NSX family, a modular low-voltage protection solution designed to withstand demanding industrial environments and coordinate with downstream protection schemes.

Ideal use scenarios include replacing a failed breaker in a 3-phase 415V distribution panel, performing retrofit upgrades to bring legacy gear up to current protection standards, or performing routine maintenance on equipment that requires exact-specification interchanges to maintain safety and reliability.

Practical guidance for buyers:

• Always confirm fit and ratings before ordering—the NSX400L-4P part number is your best reference for compatibility with existing equipment.
• Verify that your system operates at 415V and utilizes a 4-pole configuration to ensure proper operation and protection coordination.
• Check surrounding switchgear, mounting clearances, and wiring arrangements to support correct installation and safe electrical connections.

Practical tips for installation and long-term reliability:

• Store spares in a clean, dry environment to prevent corrosion and expedite replacements during maintenance windows.
• Follow Schneider Electric installation guidelines for torque and wiring practices to maintain optimal protection performance.
• Plan replacement in alignment with protection relay coordination and system downtime to minimize impact on production.