NB31200F - 1200 Amp Max. *Frame Only*

NB31200F - 1200 Amp Max. *Frame Only*

When you're working on existing electrical equipment, matching the breaker frame correctly matters. The NB31200F is a Type NB, 1200-amp, 3-pole thermal-magnetic circuit breaker frame for compatible electrical distribution applications. It is 40°C rated and has interrupting ratings of 22k AIC at 600VAC, 30k AIC at 480VAC, and 42k AIC at 240VAC. The frame measures 16 inches high, 8.25 inches wide, and 5.5 inches deep, giving you the basic dimensions needed to compare it with the equipment already in place. This particular NB31200F is supplied as the frame only, so be sure to check the rest of the breaker configuration and any components your application requires. For maintenance and replacement work involving compatible Type NB equipment, it can be a practical way to keep an existing system in its intended configuration. It's a straightforward, purpose-built electrical component made to last when used in the proper application.

Key Features and Benefits

• 1200-amp, 3-pole configuration for compatible Type NB equipment.
• Thermal-magnetic circuit breaker frame for applications requiring this specific configuration.
• Rated 22k AIC at 600VAC, 30k AIC at 480VAC, and 42k AIC at 240VAC.
• 40°C rated for systems calling for this temperature rating.
• Measures 16" H x 8.25" W x 5.5" D, making physical comparison with existing equipment easier.
• Useful for maintenance and replacement in compatible legacy electrical systems.
• Supplied as a frame only so that you can match it with the components required for the application.

Technical Specifications

• Part Number: NB31200F
  
• Type: NB
  
• Product: Thermal Magnetic Circuit Breaker Frame
  
• Configuration: Frame Only
  
• Poles: 3
  
• Amperes: 1200A
  
• AIC @ 600VAC: 22k
  
• AIC @ 480VAC: 30k
  
• AIC @ 240VAC: 42k
  
• Temperature Rating: 40°C
  
• Height: 16.0 in.
  
• Width: 8.25 in.
  
• Depth: 5.5 in.
  

Material Compliance and Certifications

• The available specifications do not include specific information about materials, agency certifications, environmental compliance, or regulatory listings. Rather than assume a certification that may not apply to a particular unit, check the product markings and applicable documentation when certification or material-compliance requirements are part of the job.
• For electrical safety, qualified electrical personnel should match the breaker frame and related components to the equipment and application.

Where It Works Best

• The NB31200F is a good fit for maintenance and replacement work involving compatible Type NB electrical distribution equipment, particularly when the objective is to maintain the original form, fit, and system configuration. It may be used in commercial or industrial electrical applications that require a 1200A, 3-pole Type NB frame with the listed dimensions and interrupting ratings.
• Before putting it into service, compare it carefully with the existing equipment. Check the NB31200F part number, Type NB designation, 1200A rating, three-pole configuration, AIC and voltage ratings, dimensions, and 40°C rating. Since this is the frame only, confirm the complete breaker assembly and required components for the application.