NXD63B900L - 900Amp Circuit Breaker

NXD63B900L - 900Amp Circuit Breaker

Get the details right when fitting a new circuit breaker into existing equipment. The NXD63B900L is a 900-amp, 3-pole NXD6 molded-case circuit breaker with a non-interchangeable trip unit and lugs on both the line and load sides; it measures about 16 inches high, 9 inches wide, and 6 inches deep.

The interrupting capacity of the NXD63B900L is 25 kA at 600 VAC, 50 kA at 480 VAC, and 65 kA at 240 VAC; it is furthermore rated at 30 kAIC at 250 VDC for suitable 2-pole applications. Along with the breaker type and physical size, these ratings are important for matching a breaker to existing electrical equipment.

For legacy breakers based on the NXD6 configuration, the breaker can provide the necessary shape, size, and functionality to match the current arrangement. Just as is the case with any molded case circuit breaker, you should not base your decision regarding compatibility solely on the amperage; the full part number, the number of poles, the voltage, the interrupting rating, the trip configuration, the dimensions, and the connections must all conform to the requirements of the equipment. Properly chosen, installed, and maintained breakers are designed to endure as intended.

Key Features and Benefits

• The rating is 900 amps for applications designed around this current rating.
• A three-pole setup for compatible electrical systems.
• The NXD6 has a molded case design for equipment that requires this type of breaker.
• Includes a non-interchangeable trip unit.
• Includes line- and load-side lugs, providing connection points on both sides of the breaker.
• It is rated 25 kA at 600 VAC, 50 kA at 480 VAC, and 65 kA at 240 VAC.
• It is also rated at 30 kAIC at 250 VDC for 2-pole applications.
• The dimensions are about 16 inches high, 9 inches wide, and 6 inches deep, so you can verify the physical space it occupies before installation.
• A practical solution for maintaining existing or legacy electrical equipment when it is necessary to keep the original shape and size.

Technical Specifications

• Part Number: NXD63B900L
  
• Breaker Type: NXD6 Molded Case Circuit Breaker
  
• Amperage: 900 A
  
• Poles: 3
  
• Trip Unit: Non-Interchangeable
  
• A.I.C. Rating at 600VAC: 25kA
  
• A.I.C. Rating at 480VAC: 50kA
  
• A.I.C. Rating at 240VAC: 65kA
  
• DC Rating: 30kAIC at 250VDC for 2-pole applications
  
• Height: 16.0 in.
  
• Width: 9.0 in.
  
• Depth: 6.0 in.
  
• Line-Side Lugs: Included
  
• Load-Side Lugs: Included
  

Material Compliance and Certifications

• The available NXD63B900L specifications did not include specific material-compliance declarations, agency certifications, or listing information. Rather than assume a certification based on the model number, check the markings on the actual breaker and the applicable manufacturer documentation when a particular listing or compliance standard is required.

Where It Works Best

• The NXD63B900L makes the most sense in existing and legacy electrical systems that were designed for the NXD6 breaker type. It's especially relevant when the job requires maintaining the installation's original form, fit, and electrical function.
• Before using the breaker as a replacement, compare it carefully with the equipment requirements and the specifications of the breaker currently in use. Make sure that the part number NXD63B900L is correct, that the rating is 900A, that it has a three-pole arrangement, is of the NXD6 type, that the dimensions match, that the voltage and interrupting ratings are suitable, and that the trip-unit configuration and lug requirements are appropriate.
• A qualified electrical professional should make the final compatibility determination and install the equipment in accordance with the specifications and applicable electrical codes.