MXD63B500L - 500Amp Circuit Breaker

MXD63B500L - 500Amp Circuit Breaker

Need to replace an MXD63B500L circuit breaker in an existing electrical setup? This 500-amp, 3-pole molded-case circuit breaker is part of the MXD6 series and is intended for equipment that uses this specific breaker configuration. It includes a non-interchangeable trip unit, plus line- and load-side lugs. The breaker has an interrupting rating of 25 kA at 600 VAC, 50 kA at 480 VAC, and 65 kA at 240 VAC. For certain two-pole DC applications, it's also rated at 30 kA at 250 VDC. The unit measures 16 inches high, 9 inches wide, and 6 inches deep, so check the space and mounting arrangement in your existing equipment. Built to last, the MXD63B500L is intended for long-term use within its specified electrical ratings. It's a practical replacement choice for older distribution systems where keeping the original breaker type and electrical configuration matters. If you're maintaining equipment that requires this exact model, the MXD63B500L meets the specifications without changing the system's intended design.

Key Features and Benefits

• Designed for circuits requiring a 500A breaker.
• Used in compatible three-phase electrical systems.
• Intended for equipment that requires this breaker type.
• The trip unit is not designed to be exchanged with another unit.
• 25kA at 600VAC, 50kA at 480VAC, and 65kA at 240VAC.
• 30 kA at 250 VDC for specified two-pole applications.
• Comes with both line-side and load-side lugs.
• Built for long-term service when installed and maintained correctly.
• Measures 16 inches high, 9 inches wide, and 6 inches deep.

Technical Specifications

• Part Number: MXD63B500L
  
• Product Type: Molded Case Circuit Breaker
  
• Type: MXD6
  
• Amperage: 500 Amps
  
• 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 Interrupting Rating: 30kA at 250VDC (2-pole applications)
  
• Dimensions:
  • Height: 16.0 inches
  • Width: 9.0 inches
  • Depth: 6.0 inches
• Line-Side Lugs: Included
  
• Load-Side Lugs: Included
  

Material Compliance and Certifications

• The MXD63B500L has a molded case construction and a non-interchangeable trip unit. Its electrical ratings are specified for AC applications at 240V, 480V, and 600V, with an additional DC interrupting rating for certain two-pole installations.
• UL, CSA, ANSI, and RoHS compliance information has not been confirmed from the available specifications. Check the manufacturer's documentation and breaker markings for any certifications required by the installation.

Where It Works Best

• The MXD63B500L is mainly used for replacing an existing breaker in electrical equipment that requires the MXD6 series. Consider it for maintenance work in older commercial and industrial facilities where the original breaker configuration must remain the same.