SCHNEIDER ELECTRIC COMPACT NSX400N CIRCUIT BREAKER 400 AMPS 4 POLE--2

Schneider Electric’s Compact NSX400N Circuit Breaker delivers dependable, high-capacity protection in a compact form factor. Rated at 400 amps with a 4-pole configuration, this unit is purpose-built for demanding electrical environments where space is at a premium and reliability is non-negotiable. Designed for industrial, commercial, and challenging residential applications, the NSX400N is an ideal choice for upgrades, retrofit projects, and maintenance replacements where trusted performance matters. Why the NSX400N stands out

• Compact footprint that fits tight panels and crowded electrical rooms without sacrificing protection or performance.
• High current rating (400 A) to safely interrupt and control large feeders and heavy circuits in complex installations.
• 4-pole configuration supports three-phase systems with a shared neutral, simplifying wiring and enhancing protection coordination.
• Built by Schneider Electric, a brand with decades of reliability, interoperability, and global support for NSX family panels and accessories.
• Proven for panel upgrades, retrofit work, and maintenance replacements—reducing downtime and keeping critical systems online.

Ideal applications and use cases

• Panel upgrades: swap out aging or undersized breakers to improve protection while preserving existing infrastructure.
• Retrofit projects: integrate robust, space-efficient protection into renovated facilities and modernized control rooms.
• Maintenance and service replacements: stock a trusted spare that’s compatible with NSX series panels and bus configurations.
• Industrial and commercial electrical distribution: manage large loads and three-phase feeders with confidence in a compact package.

What problems this breaker solves

• Space constraints in panels and switchgear: a compact NSX400N enables roomier, more accessible wiring layouts.
• Downtime risk during upgrades: a trusted, readily available component from Schneider Electric accelerates replacement and commissioning.
• Protection coordination for large circuits: four poles support multi-phase protection with a streamlined wiring approach.

Specifications at a glance

• Amperage rating: 400 A
• Poles / configuration: 4-pole
• Series family: NSX (Compact NSX400N)
• Brand: Schneider Electric

Practical guidance for selection, installation, and care

• Compatibility: verify that the NSX400N is compatible with your existing NSX panels and busbar configuration to ensure proper fit and protective coordination.
• Installation planning: consider panel layout and wiring routes to maximize the efficiency of the four-pole arrangement and minimize heat accumulation.
• Stocking strategy: for MRO teams and panel builders, keep a reliable spare on hand to shorten service windows during maintenance or retrofit work.
• Safety and standards: follow all applicable electrical codes and Schneider Electric installation guidelines when integrating this breaker into any distribution system.

Who benefits most

• Electricians and technicians performing panel upgrades, retrofits, or service replacements in industrial, commercial, or demanding residential settings.
• Panel builders designing robust, future-proof electrical layouts that require reliable, high-capacity protection.
• Facilities and MRO teams seeking a dependable, readily available spare that aligns with Schneider Electric NSX ecosystem.

With the Schneider Electric Compact NSX400N 400A 4-pole circuit breaker, you get a purpose-built solution that prioritizes space efficiency, reliable protection, and ease of integration into existing NSX-based systems. It’s not just a component—it’s a strategic choice for safer, more maintainable electrical distribution in facilities where uptime matters.