NGB1B015B - 15 Amp Circuit Breaker

NGB1B015B - 15 Amp Circuit Breaker

When you’re replacing a breaker in an existing panelboard, the details matter. The NGB1B015B is a 15-amp, 1-pole Type NGB molded-case circuit breaker designed for compatible panelboard applications. It measures 5 inches high, 1 inch wide, and 3.06 inches deep, making it a good match when you need to maintain the original fit and layout of an existing electrical system. The breaker is rated 25k AIC at 277VAC and 100k AIC at 120VAC, is HACR rated, and has a 40.25°C rating. Load-side terminals are included. For maintenance work on older equipment, finding the right breaker often comes down to matching what’s already there rather than changing the system around it. That’s where the NGB1B015B makes sense: it provides the specific size, mounting style, amperage, pole configuration, and electrical ratings required for compatible NGB applications. It’s a straightforward, built-to-last option for keeping the right equipment in service.

Key Features and Benefits

• 15-amp, 1-pole design for applications requiring this specific circuit configuration.
• Type NGB molded case construction for use with compatible equipment.
• Rated 25k AIC at 277VAC and 100k AIC at 120VAC.
• Panelboard mount configuration for the applications it was designed to fit.
• HACR-rated for installations requiring this designation.
• 40.25°C rating.
• Measures just 1 inch wide, an important detail when matching the space available in an existing panelboard.
• Load-side terminals included.
• Well suited to maintenance and replacement work where keeping the original form, fit, and function is important.

Technical Specifications

• Part Number: NGB1B015B
  
• Product: Molded Case Circuit Breaker
  
• Type: NGB
  
• Amperage: 15A
  
• Poles: 1
  
• AIC / Voltage Rating: 25k @ 277VAC; 100k @ 120VAC
  
• Height: 5.0 in.
  
• Width: 1.0 in.
  
• Depth: 3.06 in.
  
• Mounting: Panelboard Mount
  
• Temperature Rating: 40.25°C
  
• HACR Rated: Yes
  
• Load-Side Terminals: Included
  

Material Compliance and Certifications

• The NGB1B015B is HACR rated. Its available specifications also identify it as a 40.25°C-rated molded case circuit breaker intended for panelboard mounting.
• As with any replacement circuit breaker, check the requirements of the equipment and installation before making a match. Amperage is only part of the picture. Pole count, voltage, AIC rating, physical dimensions, breaker type, mounting method, and terminal arrangement all need to line up with the intended application.

Where It Works Best

• The NGB1B015B is a practical fit for compatible panelboards and legacy electrical equipment that call for this Type NGB configuration. It’s especially relevant when an existing system needs to stay in its original configuration, and you’re trying to match the breaker that was specified for that equipment.
• If you’re replacing an existing NGB1B015B, compare the old breaker and equipment requirements carefully. Check the 15 amp rating, single-pole configuration, dimensions, panelboard mounting, and 25k @ 277VAC / 100k @ 120VAC interrupting ratings. Matching those details helps ensure you’re selecting a breaker based on the actual requirements of the system—not simply because two breakers happen to share the same amperage.