NGB2B050B - 50 Amp Circuit Breaker

NGB2B050B - 50 Amp Circuit Breaker

The NGB2B050B is a high-quality 50-amp, 2‑pole circuit breaker designed for low-voltage panelboard installations. Built with a G‑frame and a dependable thermal‑magnetic trip unit, this breaker delivers consistent protection against overloads and short circuits — making it a smart, long-term choice for commercial and industrial wiring systems. Its solid construction and reliable interrupting capacity offer peace of mind, even in demanding electrical environments.

Key Features and Benefits

• Dependable Overcurrent Protection: The thermal‑magnetic trip unit responds swiftly to overload or short-circuit conditions, helping safeguard connected equipment and wiring.
• High Interrupting Capacity: Rated for 14 kAIC at 600Y/347V and 25 kAIC at 480Y/277V, the breaker can safely interrupt strong fault currents, ensuring system integrity under heavy load or fault conditions.
• Straightforward Installation: Load‑side lugs (TC1GG20) support a wide wire range, from 8 AWG to 1/0 AWG (CU/AL), simplifying wiring and ensuring secure, code-compliant connections without added hassle.
• Durable Build: Engineered for demanding commercial and industrial panelboard environments where dependable performance counts.

Technical Specifications

• Frame Type: NGB (G‑frame)
  
• Amperage: 50 A
  
• Poles: 2 (Double‑pole)
  
• Voltage Rating: Up to 600Y/347V
  
• Interrupting Ratings:
  • 14 kAIC at 600Y/347V
  • 25 kAIC at 480Y/277V
• Wire Range (Load Side): 8 AWG – 1/0 AWG (Copper or Aluminum)
  
• Dimensions:
  • Width: 2.0 inches
  • Height: 5.4 inches
  • Depth: 2.8 inches
• Weight: 1.889 lbs
  

Material Compliance and Certifications

• UL Listed: Meets rigorous safety and performance standards for use in commercial and industrial electrical systems.
• RoHS Compliant: Since July 1, 2006, the breaker has met RoHS directive requirements, reducing environmental impact.

Where It Works Best

• This 50-amp, 2‑pole breaker is an excellent fit for commercial and industrial panelboards where reliable circuit protection is essential. Use it in facilities like offices, warehouses, factories, and large-scale retail or utility installations. It’s particularly well-suited for systems requiring dependable overload and short-circuit protection for motors, HVAC units, lighting panels, or other heavy-duty equipment.