NEB2B090B - 90 Amp Circuit Breaker

NEB2B090B - 90 Amp Circuit Breaker

If you're replacing a breaker in an existing panelboard, the small details matter. The NEB2B090B is a 90-amp, 2-pole Type NEB molded-case circuit breaker made for panelboard-mounted applications. It is rated 35k AIC at 480VAC and 85k AIC at 240VAC, carries an HACR rating, and includes load-side terminals. Physical dimensions are approximately 5.5 inches high, 2 inches wide, and 3 inches deep. Those measurements are worth checking along with the electrical ratings when you're trying to match a breaker already installed in legacy equipment. Rather than changing the existing setup, the NEB2B090B suits applications that specifically call for its combination of 90A capacity, two poles, NEB configuration, mounting style, and interrupting ratings. It's a straightforward, built-to-last breaker for keeping compatible electrical equipment in service.

Key Features and Benefits

• 90A, 2-pole design for equipment requiring this specific breaker configuration.
• Type NEB molded case construction for compatible panelboard applications.
• Rated 35k AIC at 480VAC and 85k AIC at 240VAC.
• HACR rated for applications where this rating is required.
• Panelboard mount configuration helps maintain the intended fit in compatible equipment.
• Load-side terminals are included.
• Measures approximately 5.5" H × 2.0" W × 3.0" D, making it easier to compare physical fit with the breaker being replaced.
• Built to last when properly installed and used within its specified ratings.

Technical Specifications

• Part Number: NEB2B090B
  
• Product Type: Molded Case Circuit Breaker
  
• Type: NEB
  
• Amperage: 90A
  
• Poles: 2
  
• AIC Rating: 35k @ 480VAC; 85k @ 240VAC
  
• Mounting: Panelboard Mount
  
• Height: 5.5 in.
  
• Width: 2.0 in.
  
• Depth: 3.0 in.
  
• Temperature Rating: 40.25°C
  
• HACR Rated: Yes
  
• Load-Side Terminals: Included
  

Material Compliance and Certifications

• The NEB2B090B is HACR rated and has a stated temperature rating of 40.25°C. Its specified interrupting capacities are 35k AIC at 480VAC and 85k AIC at 240VAC.
• No other material-compliance or certification details were provided with the available specifications, so don't assume additional certifications. Where a job has specific compliance requirements, confirm them against the applicable equipment documentation.

Where It Works Best

• The NEB2B090B makes the most sense in existing panelboards and legacy electrical systems designed for a Type NEB breaker with these ratings and dimensions. It's especially relevant for repair and maintenance work where the goal is to keep the original form, fit, and function.
• Before replacing an existing breaker, compare more than the amperage. Check the NEB type, 90A rating, two-pole arrangement, panelboard mounting, dimensions, terminal configuration, voltage, and AIC rating against the equipment requirements. A matching part number is useful, but these details matter when confirming compatibility.
• For electrical equipment specifically designed around the NEB2B090B 90 amp 2-pole breaker configuration, this unit provides the familiar physical and electrical characteristics needed to keep that equipment in service.