NEB1B090B - 90 Amp Circuit Breaker

NEB1B090B – 90 Amp Circuit Breaker

Get dependable circuit protection with the Siemens NEB1B090B — a panelboard‑mount, low‑voltage circuit breaker built to keep electrical systems safe from overloads and short circuits. This one-pole breaker sports a thermal‑magnetic trip unit that combines temperature-based overload protection with instant magnetic trip for fault currents. At 90 amps, it’s compact yet powerful enough to handle demanding residential or commercial loads.

Key Features and Benefits

• Thermal‑Magnetic Trip Unit: Offers a dual‑mode protection system — thermal for gradual overloads and magnetic for sudden short circuits — giving you trustworthy, all-around system safety.
• High Fault‑Current Capacity: Capable of clearing fault currents of up to 22 kAIC at 347 V and 35 kAIC at 277 V, the NEB1B090B can handle substantial electrical stress without compromising safety.
• Flexible Wiring Options: Comes with load-side lugs (TA1EG10) and supports 8 to 1/0 AWG copper or aluminum wiring, simplifying installation and upgrades.
• Compact One‑Pole Design: A slender, space-saving form factor (1" W × 5.5" H × 3" D) that fits cleanly into most panelboards while still delivering dependable performance.

Technical Specifications

• Frame Type: EG-frame
  
• Trip Unit: Thermal‑Magnetic
  
• Poles: One-pole
  
• Current Rating: 90 A
  
• Voltage & Interrupting Capacity:
  • 347 V at 22 kAIC
  • 277 V at 35 kAIC
• Dimensions:
  • Width: 1 inch
  • Height: 5.5 inches
  • Depth: 3 inches
• Wire Range: 8 – 1/0 AWG (Copper or Aluminum)
  
• Weight: 1.257 lb
  

Material Compliance and Certifications

• UL Listed: The NEB1B090B is UL Listed, meaning it meets rigorous safety and performance standards enforced for residential and commercial electrical products. This certification ensures the breaker has undergone testing and evaluation, so you can confidently depend on it to meet applicable regulatory and safety requirements.

Where It Works Best

• This circuit breaker is ideal for both residential and light‑to‑medium commercial panelboards where dependable overload and short-circuit protection is crucial. Use it in homes, small offices, retail establishments, or workshop settings — anywhere you need a compact, heavy-duty breaker that delivers reliable protection without wasting space.