MXD63B600 - 600Amp Circuit Breaker

MXD63B600 - 600Amp Circuit Breaker

When replacing a circuit breaker in an existing electrical system, getting the specifications right matters most. The MXD63B600 is a 600-amp, 3-pole molded-case circuit breaker from the MXD6 series, designed for electrical equipment that requires this configuration. It includes a non-interchangeable trip unit and load-side lugs, making it a suitable replacement when the original equipment requires these features. 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 2-pole DC applications, it's also rated at 30 kA at 250 VDC. With a molded case built for long-term use, the MXD63B600 is designed to integrate with compatible commercial and industrial electrical distribution systems. It measures 16 inches high, 9 inches wide, and 6 inches deep, so check available space and mounting arrangements before replacing an existing unit. If you're maintaining older electrical equipment and need a 600A molded case circuit breaker with the right ratings and physical configuration, consider the MXD63B600. The key is making sure it matches the breaker your system was originally designed to use.

Key Features and Benefits

• Designed for electrical distribution equipment that requires a 600A circuit breaker.
• Suitable for compatible three-pole electrical applications.
• Intended for equipment designed to accommodate this specific breaker type and configuration.
• Uses a fixed trip-unit configuration rather than an interchangeable assembly.
• Rated at 25kA at 600VAC, 50kA at 480VAC, and 65kA at 240VAC.
• Provides a 30 kA interrupting rating at 250 VDC for applicable 2-pole installations.
• Comes with load-side lugs for the required electrical connections.
• Built with a durable enclosure intended for long-term service.
• Clear dimensions and electrical ratings help you check compatibility with existing equipment.

Technical Specifications

• Part Number: MXD63B600
  
• Product Type: Molded Case Circuit Breaker
  
• Series / Type: MXD6
  
• Amperage: 600 Amps
  
• Poles: 3
  
• AIC Rating at 600VAC: 25kA
  
• AIC Rating at 480VAC: 50kA
  
• AIC Rating at 240VAC: 65kA
  
• DC Interrupting Rating: 30kA at 250VDC (2-pole applications)
  
• Trip Unit: Non-Interchangeable
  
• Load-Side Lugs: Included
  
• Dimensions:
  • Height: 16 inches
  • Width: 9 inches
  • Depth: 6 inches
• Construction: Molded Case
  

Material Compliance and Certifications

• The MXD63B600 is built with a molded case housing and a non-interchangeable trip unit. Its specified interrupting ratings cover several AC voltage levels and include a DC rating for applicable 2-pole configurations.
• UL listing, CSA certification, ANSI compliance, and RoHS status have not been confirmed in the available specifications. If your installation requires a particular certification, check the product nameplate or manufacturer documentation before proceeding.

Where It Works Best

• The MXD63B600 600 amp circuit breaker is mainly intended for replacement and maintenance work involving compatible MXD6 electrical equipment. It's especially useful when an existing installation needs to keep its original breaker configuration.