NXD63B120 - 1200Amp Circuit Breaker

NXD63B120 - 1200Amp Circuit Breaker

Need to match an NXD63B120 circuit breaker already installed in your electrical equipment? This NXD6 molded case circuit breaker is a 3-pole unit rated at 1200 amps, intended for systems that require this specific breaker configuration. It has a non-interchangeable trip unit and includes load-side lugs. Interrupting ratings are 25kA at 600VAC, 50kA at 480VAC, and 65kA at 240VAC. For 2-pole applications, the breaker is also rated 130kAIC at 250VDC. Physically, it measures approximately 16 inches high by 9 inches wide by 6 inches deep. Those details are important when you're working on existing or legacy equipment, where a breaker needs to match more than just the amperage. Check the NXD6 type, pole count, voltage, AIC rating, dimensions, trip configuration, and connections against the breaker being replaced. The NXD63B120 is built to last and is a practical fit for compatible electrical distribution equipment requiring these specifications.

Key Features and Benefits

• 1200A, 3-pole configuration for systems designed around this breaker size and arrangement.
• NXD6 molded case design for compatible electrical distribution equipment.
• Rated 25kA at 600VAC, 50kA at 480VAC, and 65kA at 240VAC.
• 130kAIC at 250VDC rating for applicable 2-pole installations.
• Non-interchangeable trip unit as part of the breaker configuration.
• Load-side lugs are included, an important detail when checking an existing installation.
• Clearly defined dimensions help with form and fit verification before installation.
• Built to last when used within its specified ratings and intended application.

Technical Specifications

• Part Number: NXD63B120
  
• Type: NXD6
  
• Breaker Style: Molded Case Circuit Breaker
  
• Poles: 3
  
• Amperage: 1200A
  
• AIC Rating at 600VAC: 25kA
  
• AIC Rating at 480VAC: 50kA
  
• AIC Rating at 240VAC: 65kA
  
• DC Rating: 130kAIC at 250VDC for 2-pole applications
  
• Trip Unit: Non-Interchangeable
  
• Load-Side Lugs: Included
  
• Height: 16.0 in.
  
• Width: 9.0 in.
  
• Depth: 6.0 in.
  

Material Compliance and Certifications

• The available specifications for the NXD63B120 do not include specific material-compliance declarations, agency certifications, or certification file numbers. Verify these details on the breaker label and in applicable manufacturer documentation when a specific certification or compliance requirement is part of the job.
• As with any replacement circuit breaker, confirm that the electrical ratings and physical configuration match the equipment. Install it in accordance with applicable electrical codes and equipment requirements.

Where It Works Best

• The NXD63B120 is best suited for existing electrical systems and legacy equipment that require an NXD6 1200A, 3-pole molded case circuit breaker. Typical uses can include compatible commercial or industrial electrical distribution equipment, switchgear, and related power distribution applications.
• Replacing an existing breaker isn't as simple as finding another 1200A unit. The physical size has to work. So does the pole configuration, voltage, interrupting capacity, trip arrangement, and connection setup. That's especially important with older electrical equipment where maintaining the original form, fit, and function may be the goal.
• For that reason, compare the existing breaker carefully with the NXD63B120 specifications. If the application calls for an NXD6 breaker with a 1200A rating, three poles, a non-interchangeable trip unit, and the listed AIC ratings and dimensions, this model meets those requirements.