NGB2B045B - 45 Amp Circuit Breaker

NGB2B045B - 45 Amp Circuit Breaker

Need an NGB2B045B circuit breaker for an existing panelboard? This 45-amp, 2-pole Type NGB molded-case circuit breaker is intended for applications that require this specific breaker configuration. It has an interrupting rating of 25k AIC at 480VAC and 100k AIC at 240VAC, and it is HACR rated. The NGB2B045B is designed for panelboard mounting, includes load-side terminals, and has a 40.25°C temperature rating. Physical size also matters when you're matching a breaker to existing equipment. This unit measures 5.0 inches high, 2.0 inches wide, and 3.06 inches deep. For electricians, maintenance departments, and facilities working with compatible Type NGB equipment, those details make it easier to check the breaker against the existing application. This straightforward molded case breaker is built to last and designed to provide the required form, fit, and function when its ratings and configuration match the equipment.

Key Features and Benefits

• 45 amp rating for applications specified for a 45A breaker.
• 2-pole design for compatible two-pole circuits.
• Type NGB configuration for equipment designed to accept this breaker type.
• Rated 25k AIC at 480VAC and 100k AIC at 240VAC.
• HACR rated for compatible heating, air-conditioning, and refrigeration applications.
• Designed for panelboard mounting.
• Load-side terminals are included.
• Measures 5.0" H x 2.0" W x 3.06" D, giving you clear dimensions to compare with the existing breaker and installation.
• Built to last when properly installed and used within its stated electrical ratings.

Technical Specifications

• Part Number NGB2B045B
  
• Type NGB
  
• Breaker Type Molded Case Circuit Breaker
  
• Amperage 45 Amps
  
• Poles 2
  
• AIC Rating & Voltage 25k @ 480VAC; 100k @ 240VAC
  
• Temperature Specification 40.25°C
  
• HACR Rated Yes
  
• Mounting Panelboard Mount
  
• Height 5.0 in.
  
• Width 2.0 in.
  
• Depth 3.06 in.
  
• Terminals Load-Side Terminals Included
  

Material Compliance and Certifications

• The NGB2B045B is HACR rated, making it suitable for compatible heating, air-conditioning, and refrigeration applications where an HACR-rated breaker is called for. Available specifications also identify a 40.25°C temperature rating and interrupting ratings of 25k AIC at 480VAC and 100k AIC at 240VAC.
• No additional material-compliance or certification information is provided in the available specifications. If your application requires a particular certification or material standard, check the breaker markings and equipment requirements before installation rather than assuming compliance.
  

Where It Works Best

• The NGB2B045B is best suited to compatible Type NGB panelboards and existing electrical systems that require a 45-amp, 2-pole molded case circuit breaker with these ratings and physical dimensions. It's especially relevant when you're maintaining older equipment and want to preserve the installation's original form, fit, and function.
• It's also appropriate for compatible HACR applications when the equipment calls for the same breaker characteristics. When replacing an existing breaker, check more than the amperage. Compare the part number, pole count, voltage, AIC rating, mounting style, dimensions, and terminal arrangement with the breaker being replaced and the panelboard requirements. That quick check can help confirm whether the NGB2B045B is the right fit for the job.