NEB1B090B - 90 Amp Circuit Breaker

NEB1B090B - 90 Amp Circuit Breaker

When you're replacing a breaker in an existing panelboard, the details have to line up. The NEB1B090B is a 90-amp, 1-pole Type NEB molded-case circuit breaker designed for panelboard mounting. It measures 5.5" high x 1" wide x 3" deep and is rated 35k AIC at 277VAC and 85k AIC at 120VAC. It's also HACR-rated, rated for 40.25°C, and includes load-side terminals. For maintenance and replacement work, matching the part number and specifications matters. If your existing equipment calls for an NEB1B090B, check the amperage, pole count, dimensions, mounting arrangement, and electrical ratings against the breaker you're replacing. It's a straightforward way to maintain the original form, fit, and function of a compatible legacy electrical system. And, when properly applied within its specified ratings, it's built to last.

Key Features and Benefits

• 90-amp, single-pole breaker for applications requiring this specific configuration.
• Type NEB molded case design for use with compatible equipment.
• Panelboard mount helps maintain the intended installation arrangement.
• Rated 35k AIC at 277VAC and 85k AIC at 120VAC.
• HACR-rated for applications where this designation is required.
• Load-side terminals are included.
• Measures 5.5" x 1" x 3", making it easy to compare the physical size with an existing breaker.
• Well suited to maintenance and replacement jobs where keeping the original breaker configuration is important.
• Built to last when installed and used according to its specified ratings.

Technical Specifications

• Part Number: NEB1B090B
  
• Type: NEB
  
• Breaker Style: Molded Case Circuit Breaker
  
• Amperage: 90 Amps
  
• Poles: 1
  
• AIC / Voltage Rating: 35k @ 277VAC; 85k @ 120VAC
  
• Mounting: Panelboard Mount
  
• Dimensions:
  • Height: 5.5 in.
  • Width: 1.0 in.
  • Depth: 3.0 in.
• Temperature Rating: 40.25°C
  
• HACR Rated: Yes
  
• Load-Side Terminals: Included
  

Material Compliance and Certifications

• Based on the available specifications, the NEB1B090B is HACR-rated and carries a 40.25°C rating. No other material-compliance certifications or environmental declarations are listed in the supplied product information.
• For installations with specific code, certification, or material requirements, confirm the breaker markings and equipment requirements before installation.

Where It Works Best

• The NEB1B090B is a good fit for maintenance and replacement work involving compatible Type NEB panelboards, particularly in existing commercial, industrial, and facility electrical systems. It's intended for situations that call for a 90-amp, 1-pole breaker with the same mounting arrangement, physical size, and electrical ratings.
• With older electrical equipment, matching only the amperage isn't enough. Before using the NEB1B090B as a replacement, compare the part number, Type NEB designation, pole count, amperage, AIC, and voltage ratings, mounting style, dimensions, and terminal configuration with the existing breaker and panelboard requirements. That simple check helps ensure you're using the right breaker for the application.