NGB1B100B - 100 Amp Circuit Breaker

NGB1B100B - 100 Amp Circuit Breaker

When you're working on an existing electrical system, finding a breaker with the right specifications matters. The NGB1B0100B is a 100-amp, 1-pole Type NGB molded-case circuit breaker designed for compatible panelboard applications. It has an interrupting rating of 25k AIC at 277VAC and 100k AIC at 120VAC and measures approximately 5 inches high, 1 inch wide, and 3.06 inches deep. The breaker is HACR rated and includes load-side terminals.

This breaker is a good fit for maintenance and replacement work where an existing panel or piece of equipment was designed around the NGB configuration. That's especially useful with legacy electrical equipment, where matching the original breaker's size, mounting arrangement, amperage, poles, and interrupting rating can be just as important as finding the correct part number. The NGB1B0100B is built to last and provides the familiar form, fit, and function needed for its intended application.

Key Features and Benefits

• 100-amp rating for electrical equipment designed around this amperage.
• Single-pole configuration for compatible panelboard applications.
• Type NGB molded case design for systems that require the appropriate NGB configuration.
• Rated 25k AIC at 277VAC and 100k AIC at 120VAC.
• Panelboard mount configuration helps maintain the intended fit in compatible equipment.
• Load-side terminals are included.
• HACR rated for qualifying applications.
• At only 1 inch wide, its dimensions can be checked against an existing breaker when identifying a suitable replacement.
• Well suited to legacy system maintenance and replacement where matching the original form, fit, and electrical specifications is important.

Technical Specifications

• Part Number: NGB1B0100B
  
• Product Type: Molded Case Circuit Breaker
  
• Type: NGB
  
• Amperage: 100 Amps
  
• Poles: 1
  
• A.I.C. Rating & Voltage: 25k @ 277VAC; 100k @ 120VAC
  
• Mounting: Panelboard Mount
  
• Height: 5.0 in.
  
• Width: 1.0 in.
  
• Depth: 3.06 in.
  
• Temperature Notation: 40.25°C
  
• HACR Rated: Yes
  
• Terminals: Load-Side Terminals Included
  

Material Compliance and Certifications

• The NGB1B0100B is HACR rated and carries the stated interrupting ratings of 25k AIC at 277VAC and 100k AIC at 120VAC. Requirements can vary from one installation to another, particularly when working with older equipment. Confirm any required certifications, listings, or material-compliance information from the markings on the individual breaker and the documentation for the equipment in which it will be installed.

Where It Works Best

• The NGB1B0100B is best suited for compatible panelboards and legacy electrical systems that use the Type NGB breaker configuration. It can be particularly useful when repairing or maintaining existing equipment and the goal is to preserve the original setup rather than change how the system was designed.
• Before replacing a breaker, check more than the amperage. Confirm the NGB1B0100B part number, number of poles, voltage and AIC ratings, dimensions, mounting configuration, and terminal arrangement against the existing breaker and panel requirements. A similar-looking breaker isn't necessarily interchangeable.