NJL631400 - 400Amp Circuit Breaker

NJL631400 - 400Amp Circuit Breaker

The NJL631400 400 Amp circuit breaker is designed for facilities that need dependable protection without changing the original electrical design. This thermal magnetic molded case circuit breaker is commonly used in industrial and commercial settings where high current capacity is required and system continuity matters. With a 400-amp rating and a three-pole layout, it helps safeguard electrical equipment from overloads and short circuits while supporting stable, day-to-day operation. This model is best suited for maintenance and replacement applications, making it a practical choice when keeping existing systems safe and functional is the priority.

Key Features and Benefits

• 400 Amp Rating: Handles high electrical loads while helping reduce the risk of damage caused by fault conditions.
• Three-Pole Configuration: Designed for three-phase systems, providing even protection across all phases.
• Thermal Magnetic Trip Mechanism: Responds to both sustained overloads and sudden short circuits for dependable protection.
• Bolt-On Design: Helps ensure a tight, secure connection inside the panel, even in demanding environments.
• Load-Side Lug Terminals: Included to simplify wiring and support clean, secure connections during servicing.

Technical Specifications

• Amperage: 400 Amps
  
• Poles: 3
  
• Frame Type: NJJ
  
• Interrupting Capacity:
  • 42kA at 240 VAC
  • 30kA at 480 VAC
  • 22kA at 600 VAC
• Dimensions:
  • Width: 8.25 inches
  • Length: 10.13 inches
  • Depth: 3.88 inches
• Operating Temperature: 40°C
  
• Type: Thermal Magnetic Molded Case Circuit Breaker
  
• Weight: 23 lbs
  
• Terminals: Load-side lug terminals included
  

Material Compliance and Certifications

• Industry Standards: This circuit breaker is manufactured in accordance with recognized industry standards and has been evaluated for safety and performance.
• UL and CSA Certifications: UL and CSA certifications confirm that it meets established requirements for use in commercial and industrial electrical systems.

Where It Works Best

• The NJL631400 is well suited for maintaining existing electrical installations where reliability is essential and system upgrades are not required. It is commonly used in industrial facilities, commercial buildings, and other high-demand environments that rely on consistent electrical protection to keep operations running smoothly.