NGB2B080B - 80 Amp Circuit Breaker

NGB2B080B - 80 Amp Circuit Breaker

The Siemens NGB2B080B circuit breaker delivers dependable electrical protection designed for the most challenging demands — whether it’s protecting circuits in a large commercial installation, a factory panelboard, or a residential electrical setup. With its thermal-magnetic trip unit, this breaker responds accurately to overloads and short-circuits, giving you peace of mind when it counts. Its 2-pole configuration and full 80 Amp capacity make it an excellent fit for mid-size circuits, offering reliable safety coverage without unnecessary complexity.

Key Features and Benefits

• Precise overload and short-circuit protection: The built-in thermal‑magnetic trip mechanism promptly shuts off circuits under fault conditions, safeguarding your wiring and connected equipment.
• Dual-voltage compatibility: Rated for both 600Y/347 V and 480Y/277 V systems, giving you flexibility for a variety of electrical setups.
• Flexible wiring options: Accepts 8 AWG through 1/0 AWG copper or aluminum conductors, making installation for diverse wiring jobs simple.
• Load-side lugs only: The TC1GG20 configuration simplifies installation, avoids unnecessary complexity, and ensures a clean, secure connection.
• High interrupting capacity: With 14 kAIC at 600Y/347 V and 25 kAIC at 480Y/277 V, this breaker delivers dependable performance under high fault current conditions.

Technical Specifications

• Amperage Rating: 80 A
  
• Poles: 2
  
• Voltage Rating: 600Y/347 V, 480Y/277 V
  
• Interrupting Rating:
  • 14 kAIC at 600Y/347 V
  • 25 kAIC at 480Y/277 V
• Wire Size Range: 8 AWG – 1/0 AWG, copper or aluminum
  
• Orientation: Load‑side lugs only (TC1GG20)
  
• Physical Size:
  • Width: 2.0 inches
  • Length: 5.4 inches
  • Depth: 2.8 inches
• Weight: 1.889 lb
  

Material Compliance and Certifications

• Fully compliant with RoHS: Manufactured without hazardous substances, making it an environmentally conscious choice for modern installations.
• Industrial Standards: Built according to rigorous industrial standards to ensure safe, long-lasting performance in both residential and commercial environments.

Where It Works Best

• This breaker is an ideal choice when you need dependable circuit protection in a panelboard — whether you’re wiring a small commercial facility, outfitting an industrial control board, or upgrading residential service panels. It shines in settings where circuits must handle moderate power loads, such as HVAC systems, lighting panels, sub‑panels feeding machinery, or feeder circuits in commercial buildings. If you want reliable overload and fault protection paired with installation flexibility, the NGB2B080B stands out as a top-tier choice.