MXD63B600 - 600Amp Circuit Breaker

MXD63B600 - 600Amp Circuit Breaker

When you're 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. 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.

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
• Ship Weight: 75.00 lbs.
• Construction: Molded Case
  

Material Compliance and Certifications

The MXD63B600 has 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.

The available specifications do not confirm UL listing, CSA certification, ANSI compliance, or RoHS status. 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.