NX361200G - 1200 Amp Circuit Breaker

NX361200G - 1200 Amp Circuit Breaker

Boost the protection of your power distribution system with the Square D NX361200G molded-case circuit breaker. Designed especially for demanding industrial and commercial settings, this high-capacity breaker offers precise electronic trip control, ease of plug-in installation, and peace of mind for facility operators who can’t afford unplanned downtime.

Key Features and Benefits

• Full electronic protection via Micrologic trip unit: Includes adjustable long-time, short-time, instantaneous, and ground-fault trip zones for layered defense against overloads and faults.
• I-Line plug-in mounting: Simplifies installation, replacement, and panel reconfiguration, helping reduce labor costs and service intervals.
• Customizable trip settings: Fine-tune pickup values and delays to match load behavior, giving you more control over coordination and selectivity.
• Current-limiting design: Helps reduce fault current stress on downstream components during short circuits.
• Three-pole configuration: Ideal for three-phase systems requiring balanced protection across phases.

Technical Specifications

• Rated Current: 1200 A
  
• Interrupting Capacity (AIC):
  • 65 kA @ 600 VAC
  • 100 kA @ 480 VAC
  • 125 kA @ 240 VAC
• Poles: 3
  
• Frame Type / Series: NX / I-Line
  
• Mounting Style: Plug-in (I-Line)
  
• Trip Functions: Long-Time, Short-Time, Instantaneous, Ground-Fault (all adjustable)
  
• Dimensions (approx.):
  • Width: 14.62 inches
  • Height: 12.12 inches
  • Depth: 6.43 inches

Material Compliance and Certifications

• Industry Standards: This circuit breaker is built to meet rigorous industry standards. It complies with UL, CSA, NOM, and IEC safety and performance norms, making it acceptable for global installations.
• Design: Its current-limiting architecture also helps reduce mechanical and thermal stress on electrical gear during faults.

Where It Works Best

• The NX361200G is ideal for environments that demand high-capacity, reliable protection:
• Industrial power distribution panels handling large motors, drives, or generator ties.
• Commercial buildings and facilities with critical electrical infrastructure.
• Utility or infrastructure projects where fault current levels are high and selectivity is essential.
• Upgrades or retrofits in existing I-Line systems needing greater ampacity.