ND63B900 - 900Amp Circuit Breaker

ND63B900 - 900Amp Circuit Breaker

The ND63B900 is a 900-amp, 3-pole Type ND6 molded case circuit breaker with an interchangeable trip unit. It's a practical choice when you're maintaining an existing electrical system and need a breaker that matches the original specifications rather than changing the equipment configuration. The breaker measures 16 inches high, 9 inches wide, and 6 inches deep, and includes load-side lugs. Its interrupting ratings are 25 kA at 600VAC, 50 kA at 480VAC, and 65 kA at 240VAC. There's also a 30 kA rating at 250VDC for 2-pole applications. If you're replacing an existing ND6 breaker, the important thing is getting the details right. Check the part number, amperage, poles, dimensions, trip unit, lug arrangement, voltage, and A.I.C. rating against the equipment you're working on. The ND63B900 is built to last and is intended for applications that require its specific electrical and physical characteristics.

Key Features and Benefits

• 900A rating for equipment designed around this amperage.
• 3-pole configuration for compatible electrical distribution applications.
• Type ND6 molded-case construction to match existing ND6 equipment.
• Interchangeable trip unit provides the specified trip configuration.
• Rated 25 kA at 600VAC, 50 kA at 480VAC, and 65 kA at 240VAC.
• Also rated 30 kA at 250VDC for 2-pole applications.
• Load-side lugs are included.
• 16" H × 9" W × 6" D, making it easy to compare dimensions with the breaker being replaced.
• Built to last for its intended electrical distribution application when properly selected and installed.
  

Technical Specifications

• Part Number: ND63B900
  
• Type: ND6
  
• Product Type: Molded Case Circuit Breaker
  
• Amperage: 900A
  
• Poles: 3
  
• A.I.C. Rating @ 600VAC: 25 kA
  
• A.I.C. Rating @ 480VAC: 50 kA
  
• A.I.C. Rating @ 240VAC: 65 kA
  
• DC Rating: 30 kA @ 250VDC for 2-pole applications
  
• Trip Unit: Interchangeable
  
• Lugs: Load-side lugs included
  
• Height: 16.0 in.
  
• Width: 9.0 in.
  
• Depth: 6.0 in.
  

Material Compliance and Certifications

• No specific material compliance information or certification listings were included in the available specifications for the ND63B900. Rather than assume a certification applies, verify the product documentation when a particular listing or compliance requirement matters for the application.
  

Where It Works Best

• The ND63B900 circuit breaker is primarily suited to existing electrical distribution equipment that calls for a Type ND6, 900A, 3-pole molded case circuit breaker with an interchangeable trip unit. That makes it especially relevant for maintenance and replacement work on legacy systems where maintaining the correct form, fit, and electrical ratings matters.
• Before using the ND63B900 as a replacement, compare it with the existing breaker and equipment requirements. Don't stop at the 900A rating. Also check the part number, ND6 type, number of poles, voltage, A.I.C. rating, physical dimensions, trip-unit configuration, and lug arrangement. Qualified electrical personnel should confirm final compatibility and installation in accordance with the equipment requirements and applicable electrical codes.