NDC312T32W - 1200 Amp Circuit Breaker

NDC312T32W - 1200 Amp Circuit Breaker

The NDC312T32W is a 1200-amp, 3-pole N-Frame molded case circuit breaker for compatible electrical distribution equipment. If you're replacing a breaker in an existing system, the details matter. This model is Type NDC, measures 16" H x 8.25" W x 5.5" D, and has interrupting ratings of 65kA at 600VAC, 100kA at 480VAC, and 200kA at 240VAC. It is HACR-rated and uses a non-interchangeable trip unit. The breaker also provides independently adjustable short-time pickup and short-time delay, allowing electrical professionals to set these functions as required by the application. One detail worth checking before installation: the rating plug and lug terminals are not included in the catalog number. For legacy equipment, the NDC312T32W can be a practical form-, fit-, and function-replacement when the frame, dimensions, electrical ratings, trip characteristics, and mounting requirements match the existing breaker. Its molded-case construction is built to last in its specified application.

Key Features and Benefits

• 1200A, 3-pole N-Frame breaker for compatible electrical distribution systems.
• Type NDC configuration helps identify the correct breaker family for replacement applications.
• Interrupting capacity is 65kA at 600VAC, 100kA at 480VAC, and 200kA at 240VAC.
• Independently adjustable short-time pickup and delay provide control over the applicable trip settings.
• HACR-rated for applications requiring an HACR-rated breaker.
• Uses a non-interchangeable trip unit.
• Molded-case construction provides a solid, practical design for its intended application.
• Well suited to legacy equipment when the original breaker specifications call for this exact form, fit, and function.
  

Technical Specifications

• Type: NDC
  
• Frame: N-Frame
  
• Amperage: 1200A
  
• Poles: 3
  
• Breaker Style: Molded Case Electronic Circuit Breaker
  
• Protection: Thermal Magnetic
  
• A.I.C. at 600VAC: 65kA
  
• A.I.C. at 480VAC: 100kA
  
• A.I.C. at 240VAC: 200kA
  
• Short-Time Pickup: Independently Adjustable
  
• Short-Time Delay: Independently Adjustable
  
• Trip Unit: Non-Interchangeable
  
• HACR Rated: Yes
  
• Height: 16.0 in.
  
• Width: 8.25 in.
  
• Depth: 5.5 in.
  
• Rating Plug: Not Included in Catalog Number
  
• Lug Terminals: Not Included in Catalog Number
  

Material Compliance and Certifications

• The supplied specifications identify the NDC312T32W as HACR rated. No additional material-compliance or certification information was provided, so it would be misleading to make claims not supported by the available product data. Check any project-specific compliance requirements against the breaker nameplate and applicable manufacturer documentation.
  

Where It Works Best

• The NDC312T32W makes the most sense when you're maintaining equipment that already calls for an NDC N-Frame 1200A, 3-pole breaker. Instead of changing the application, the focus is on matching what the existing electrical system requires.
• This is especially important with legacy equipment. A replacement breaker needs more than the same amp rating. Frame size, dimensions, voltage, interrupting capacity, trip characteristics, mounting, plug rating, and terminal requirements must all match the equipment.
• For that reason, the NDC312T32W is best considered a form, fit, and functional replacement where its specifications match the original application. A qualified electrical professional should verify those requirements before installation.