NX361200 - 1200 Amp Circuit Breaker

NX361200 - 1200 Amp Circuit Breaker

Built for high-demand electrical systems, the Square D NX361200 delivers reliable protection and intelligent control in heavy commercial, industrial, and critical-infrastructure applications. Engineered by Schneider Electric’s Square D brand, it combines precision trip functions with efficient fault mitigation to keep your systems safe, stable, and running smoothly. Whether you’re retrofitting a control center or safeguarding a power distribution panel, the NX361200 helps prevent downtime and protects your equipment with advanced features tailored for modern power needs.

Key Features and Benefits

• Thermal-Magnetic Protection with Micrologic Solid-State Trip: Offers both long-time (LT), short-time (ST), instantaneous (I), and optional ground-fault (G) settings, allowing you to finetune protection to your load profile.
• Current-Limiting Action: The design suppresses fault energy, lowering stress on downstream devices and helping extend component life.
• Plug-In (I-Line) Mounting: Enables fast installation or replacement without complex rewiring, minimizing labor and system disruption.
• Fully Adjustable Settings: Customize trip thresholds and delay timings to match motor inrush, selective coordination, or sensitive equipment needs.
• Advanced Diagnostics: Electronically controlled trip logic offers more predictable behavior than conventional thermal or magnetic designs.
  

Technical Specifications

• Rated Current: 1200 A
  
• Voltage Rating: Up to 600 V AC
  
• Interrupting Capacity (A.I.C.):
  • 125 kA @ 240 V
  • 100 kA @ 480 V
  • 65 kA @ 600 V
• Poles: 3-Pole, three-phase
  
• Frame / Type: NX, I-Line plug-in
  
• Trip Functions: LT, ST, I, (optional GF) via Micrologic solid-state trip unit
  
• Dimensions:
  • 14.62 in × 12.12 in × 6.43 in
• Construction: Thermal-magnetic / electronic molded-case break with current limiting elements
  

Material Compliance and Certifications

• UL 489 & CSA Certified: Meets North American molded-case circuit breaker safety standards.
• IEC / NOM / International Standards: Supports use in international systems with recognized compliance.
• ISO 9001 Quality Assurance: Manufactured under rigorous quality control processes.
• RoHS / Environmental: Produced without restricted substances, supporting greener installations.
  

Where It Works Best

• Use this breaker in environments where dependable protection, easy configuration, and minimal maintenance are priorities:
• Industrial Plants — Motors, heavy machinery, pulp & paper, steel, mining operations.
• Commercial Facilities — High-capacity HVAC, building electrical distribution, large tenant loads.
• Critical Infrastructure — Data centers, healthcare, utilities, control rooms where uptime matters.
• Renewables & Microgrids — Solar farms, wind installations, hybrid systems needing precise overcurrent response.
• Retrofit & Expansion Projects — Replacement for legacy breakers in upgraded or new panels, especially given its plug-in ease.