NGB1B025B - 25 Amp Circuit Breaker

NGB1B025B - 25 Amp Circuit Breaker

When you're replacing a breaker in an existing panelboard, the small details matter. The NGB1B025B is a 25-amp, 1-pole Type NGB molded-case circuit breaker designed for panelboard mounting. It is rated 25kA at 277VAC and 100kA at 120VAC, with a 40.25°C temperature rating and HACR rating. The breaker measures 5.0 inches high, 1.0 inch wide, and 3.06 inches deep, and it includes load-side terminals. Those specifications make it easier to check the breaker against the unit already in your equipment. For maintenance and replacement work, that's really what counts: matching the part number, amperage, pole configuration, interrupting rating, mounting style, terminals, and physical size. When your existing system calls for these specifications, the NGB1B025B provides the form, fit, and function needed to keep the original equipment configuration intact. Its molded case construction is built to last when the breaker is properly installed and used within its stated ratings.

Key Features and Benefits

• 25-amp, 1-pole design for applications requiring this specific Type NGB configuration.
• 25kA at 277VAC and 100kA at 120VAC A.I.C. ratings provide clear specifications for matching the breaker to the intended system.
• Panelboard-mount configuration for compatible existing panelboard equipment.
• HACR rated for applications that require this rating and meet the remaining system specifications.
• Load-side terminals included as part of the breaker configuration.
• Defined physical dimensions help when checking fit in an existing installation.
• A useful option for legacy equipment maintenance and replacement when you need to match the original form, fit, and function.

Technical Specifications

• Part Number: NGB1B025B
  
• Type: NGB
  
• Product Type: Molded Case Circuit Breaker
  
• Amperage: 25A
  
• Poles: 1
  
• A.I.C. Rating & Voltage: 25kA @ 277VAC; 100kA @ 120VAC
  
• Mounting: Panelboard Mount
  
• Height: 5.0 in.
  
• Width: 1.0 in.
  
• Depth: 3.06 in.
  
• Temperature Rating: 40.25°C
  
• HACR Rated: Yes
  
• Load-Side Terminals: Included
  

Material Compliance and Certifications

• The NGB1B025B is HACR rated and has a specified temperature rating of 40.25°C. Additional material-compliance information or certifications were not provided with the available specifications, so we assume none.
• If your installation has specific code, listing, or facility requirements, confirm those requirements against the breaker and associated equipment before installation.

Where It Works Best

• This breaker is a good fit for compatible panelboards and existing electrical systems that specifically call for a 25A, 1-pole Type NGB molded case circuit breaker. It's particularly relevant for maintenance and replacement jobs where you need to preserve the existing equipment configuration rather than change it.
• Before replacing a breaker, compare more than just the amp rating. Check the part number, number of poles, voltage and A.I.C. ratings, dimensions, mounting arrangement, and terminal configuration against the existing breaker and panelboard requirements. A breaker that looks right isn't necessarily the right electrical match. Checking those details helps determine whether the NGB1B025B suits the intended application.