NDC312T35W - 1200 Amp Circuit Breaker

NDC312T35W - 1200 Amp Circuit Breaker

When you’re working with existing N-Frame electrical equipment, getting the specifications right matters. The NDC312T35W circuit breaker is a 1200-amp, 3-pole, Type NDC molded-case circuit breaker designed for applications that require the right combination of frame size, electrical ratings, and protection functions. It carries interrupting ratings of 65kA at 600VAC, 100kA at 480VAC, and 200kA at 240VAC, giving you clear ratings to match your system requirements. This N-Frame breaker is HACR-rated and includes adjustable short-time pickup with an I²t short-delay ramp and ground-fault protection. Its non-interchangeable trip-unit configuration is especially important when matching a breaker to existing equipment, so check specifications carefully before installation. Measuring 16 inches high, 8.25 inches wide, and 5.5 inches deep, the NDC312T35W is well suited for maintenance and replacement applications where the original form, fit, and function need to be maintained. The rating plug and lug terminals are not included in the catalog number, so confirm those requirements separately. Properly specified and maintained, this breaker is built to last as part of compatible electrical equipment.

Key Features and Benefits

• 1200A, 3-pole configuration for compatible N-Frame electrical applications
• Type NDC, N-Frame design helps simplify identification when matching existing equipment
• 65kA interrupting rating at 600VAC
• 100kA interrupting rating at 480VAC
• 200kA interrupting rating at 240VAC
• Adjustable short-time pickup provides the specified protection functionality for compatible systems
• I²t short-delay ramp included as part of the breaker’s protection functions
• Ground-fault protection included
• Non-interchangeable trip units for the specified breaker configuration
• HACR rated for applications where this rating is required
• Clearly defined dimensions help with form and fit verification in existing equipment
• Suitable for legacy-system maintenance and functional replacement when all electrical and physical specifications match
  

Technical Specifications

• Part Number: NDC312T35W
  
• Type: NDC
  
• Frame: N-Frame
  
• Amperage: 1200A
  
• Poles: 3
  
• A.I.C. @ 600VAC: 65kA
  
• A.I.C. @ 480VAC: 100kA
  
• A.I.C. @ 240VAC: 200kA
  
• Height: 16.0 in.
  
• Width: 8.25 in.
  
• Depth: 5.5 in.
  
• Construction: Molded Case
  
• Trip Units: Non-Interchangeable
  
• Short-Time Pickup: Adjustable
  
• Short-Delay Function: I²t Short-Delay Ramp
  
• Ground-Fault Protection: Included
  
• HACR Rated: Yes
  
• Rating Plug: Not Included in Catalog Number
  
• Lug Terminals: Not Included in Catalog Number
  

Material Compliance and Certifications

• The NDC312T35W is HACR rated according to the supplied product specifications. No additional material-compliance or certification information was provided, so do not assume certifications such as UL, CSA, or RoHS without supporting documentation.
• For replacement applications, verify the required electrical ratings, protection functions, dimensions, plug rating, terminals, and equipment requirements before installation.
  

Where It Works Best

• The NDC312T35W 1200A circuit breaker is best suited for maintenance, repair, and replacement applications involving compatible N-Frame Type NDC equipment. It can be a practical choice when the goal is to maintain the required form, fit, and electrical function of an existing system rather than change the equipment configuration.
• Because circuit breakers must match more than amperage alone, confirm compatibility by verifying the frame type, pole count, dimensions, voltage and interrupting ratings, trip characteristics, ground-fault requirements, rating plug, and terminal requirements. A qualified electrical professional should verify that the NDC312T35W meets the requirements of the specific equipment and application before installation.