NGB2B090B - 90 Amp Circuit Breaker

NGB2B090B - 90 Amp Circuit Breaker

If you're trying to match an NGB2B090B already installed in a panelboard, the details are what matter. This is a 90-amp, 2-pole Type NGB molded-case circuit breaker designed for panelboard mounting. Its A.I.C. ratings are 25kA at 480VAC and 100kA at 240VAC. Size is another important point when dealing with existing equipment: the breaker measures 5 inches high, 2 inches wide, and 3.06 inches deep. It's also HACR-rated and includes load-side terminals. The listed temperature specification is 40.25°C. For maintenance work on an existing or legacy electrical system, this breaker is most useful when the equipment specifically calls for the NGB2B090B or the same form, fit, and electrical characteristics. Don't overcomplicate the selection; compare the part number and ratings with the breaker you're replacing, check the dimensions and mounting arrangement, and make sure they match the panelboard requirements. When properly matched to its intended application and installed correctly, this breaker is built to last.

Key Features and Benefits

• 90 amp rating for applications that require a 90A breaker.
• 2 poles to match compatible two-pole installations.
• Type NGB molded case design for compatible panelboard equipment.
• Rated 25kA at 480VAC and 100kA at 240VAC.
• Panelboard mount configuration.
• HACR rated for compatible applications where an HACR-rated breaker is specified.
• Load-side terminals are included.
• Compact 5" H x 2" W x 3.06" D dimensions help when checking fit in existing equipment.
• A useful form, fit, and function replacement when the specifications match the original breaker.

Technical Specifications

• Part Number: NGB2B090B
  
• Type: NGB
  
• Breaker Type: Molded Case Circuit Breaker
  
• Amperage: 90A
  
• Number of Poles: 2
  
• A.I.C. Rating: 25kA @ 480VAC; 100kA @ 240VAC
  
• Height: 5.0 in.
  
• Width: 2.0 in.
  
• Depth: 3.06 in.
  
• Mounting: Panelboard Mount
  
• Temperature Specification: 40.25°C
  
• HACR Rated: Yes
  
• Load-Side Terminals: Included
  

Material Compliance and Certifications

• This breaker is HACR rated. This can be important when used with compatible heating, air-conditioning, or refrigeration equipment that specifies an HACR-rated circuit breaker.
• The available specifications also list 40.25°C as the temperature rating. No other material-compliance certifications were provided in the product information, so check any project-specific certification requirements against the breaker label and the equipment documentation.
  

Where It Works Best

• The NGB2B090B makes the most sense in an existing panelboard or legacy installation that already requires this Type NGB configuration. This is especially true for repair and maintenance work where the objective is to keep the correct breaker style and electrical ratings in place rather than change the system.
• When checking a replacement, don't go by amperage alone. Make sure the 90A rating, two poles, physical size, mounting arrangement, voltage, and A.I.C. ratings match the equipment. The NGB2B090B measures 5" x 2" x 3.06", which gives you another quick reference when comparing it with an existing breaker.
• For electricians, maintenance crews, and facility personnel keeping older electrical equipment in service, those specifics are often what determine whether a breaker is appropriate for the job.
• Always confirm the breaker specifications against the existing equipment before installation. Qualified personnel should select and install breakers in accordance with applicable electrical codes and equipment requirements.