ND312T36W - 1600 Amp Circuit Breaker

ND312T36W - 1600 Amp Circuit Breaker

When you’re replacing a breaker in an existing electrical system, getting the right form, fit, ratings, and configuration matters, the ND312T36W Type ND circuit breaker is a 1200-amp, 3-pole N-Frame molded-case circuit breaker designed for applications requiring this specific Type ND configuration.

The ND312T36W combines the supplied thermal-magnetic and electronic breaker specifications with a non-interchangeable trip unit. It also includes independently adjustable short-time pickup and delay, along with ground-fault protection, providing the protection functions required for compatible equipment.

Its interrupting ratings are 25kA at 600VAC, 50kA at 480VAC, and 65kA at 240VAC. The breaker measures 16 inches high, 8.25 inches wide, and 5.5 inches deep, so check these dimensions when matching it to existing equipment.

The ND312T36W is also HACR rated. The catalog number does not include plug and lug terminals, so confirm those requirements separately for the intended installation. For facilities maintaining compatible Type ND equipment, this breaker provides the specific form and functional characteristics needed for an appropriate replacement. It’s built to last while maintaining the ratings and configuration the application requires.

Key Features and Benefits

• 1200A current rating for compatible high-amperage electrical distribution applications
• 3-pole configuration for systems designed around this Type ND breaker
• N-Frame molded-case design for proper form and fit in compatible equipment
• Electronic circuit breaker with non-interchangeable trip unit
• Independently adjustable short-time pickup and delay for application-specific protection settings
• Ground-fault protection included
• HACR-rated for applicable heating, air-conditioning, and refrigeration equipment
• Multiple interrupting ratings for specified system voltages
• Dimensions make it easier to verify physical compatibility before installation
• Built to last for continued use in compatible electrical distribution equipment
  

Technical Specifications

• Part Number: ND312T36W
  
• Type: ND
  
• Frame: N-Frame
  
• Amperage: 1200A
  
• Poles: 3
  
• Height: 16.0 in.
  
• Width: 8.25 in.
  
• Depth: 5.5 in.
  
• A.I.C. Rating at 600VAC: 25kA
  
• A.I.C. Rating at 480VAC: 50kA
  
• A.I.C. Rating at 240VAC: 65kA
  
• Breaker Style: Molded Case
  
• Trip Unit: Non-Interchangeable
  
• Short-Time Pickup: Independently Adjustable
  
• Short-Time Delay: Independently Adjustable
  
• 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 supplied product specifications identify the ND312T36W as HACR rated. No additional material-compliance or certification information was provided, so do not assume additional certifications.
  

Where It Works Best

• The ND312T36W 1200A 3-pole circuit breaker is best suited to compatible electrical distribution equipment designed for a Type ND N-Frame breaker with the same electrical and physical requirements. This is especially relevant when maintaining existing equipment, where matching the breaker’s frame size, pole configuration, amperage, voltage, interrupting capacity, dimensions, and protection functions is important.
• Before installation, confirm the equipment requirements against the complete breaker specifications, including the required rating plug, lug terminals, mounting arrangement, system voltage, and available fault current.