NEB2B090B - 90 Amp Circuit Breaker

NEB2B090B - 90 Amp Circuit Breaker

The Siemens NEB2B090B circuit breaker delivers dependable protection for residential and commercial electrical systems. Designed for panelboard mounting, this two‑pole breaker uses a thermal‑magnetic trip unit to guard against both overloads and short circuits. With a 90 A current rating and high interrupting capacity — 22 kAIC at 600Y/347 V or 35 kAIC at 480 V — it's built to handle demanding power conditions without faltering. Compact yet powerful, this breaker is an excellent go-to choice when safety and performance are top priorities for electrical installations.

Key Features and Benefits

• Thermal‑Magnetic Trip Unit: Combines thermal sensing for overload protection and magnetic activation for short-circuit defense, offering comprehensive safety in one device.
• High Interrupting Capacity: With 22 kAIC at 600Y/347 V and 35 kAIC at 480 V, it’s capable of interrupting high fault currents, making it suitable for large offices, commercial buildings, or heavy-duty residential setups.
• Flexible Wiring Support: Includes load-side lugs (TA1EG10) compatible with copper or aluminum conductors ranging from 8 AWG to 1/0 AWG, giving installers more flexibility.
• Panelboard‑Mount Design: The compact EG-frame design fits standard panelboards and helps maximize available space inside enclosures.

Technical Specifications

• Frame Type: EG‑frame
• Trip Unit: Thermal‑Magnetic
• Poles: 2‑Pole
• Current Rating: 90 Amps
• Interrupting Capacity:
  • 22 kAIC @ 600Y/347 V
  • 35 kAIC @ 480 V
• Wire Range: 8 AWG – 1/0 AWG (Copper or Aluminum)
• Dimensions:
  • Width: 2 in
  • Height: 5.5 in
  • Depth: 3 in
• Weight: 1.257 lb

Material Compliance and Certifications

• UL Certification: This breaker carries UL certification, verifying that it meets rigorous safety and performance standards required for residential and commercial electrical installations. The listing ensures that every unit has been tested for safe operation under specified load and fault conditions. By choosing this breaker, you're selecting gear that meets recognized industry safety benchmarks for circuit protection.

Where It Works Best

• The Siemens NEB2B090B excels in panelboard installations for both new builds and retrofit projects. It’s ideal for mid‑sized residential homes, small to medium commercial buildings, or branch circuits supplying HVAC units, lighting systems, and other high‑draw equipment. If you need dependable overload and short-circuit protection in a compact breaker that adapts to different wiring setups, this 90 Amp breaker stands out as a smart, versatile choice.