MXD63B500 - 500Amp Circuit Breaker

MXD63B500 - 500Amp Circuit Breaker

Keep your existing electrical distribution system operating as intended with the MXD63B500 500 Amp 3-Pole Molded Case Circuit Breaker. As part of the MXD6 series, this heavy-duty circuit breaker provides overcurrent and short-circuit protection for compatible commercial and industrial electrical systems. With a 500-amp current rating, three-pole configuration, and non-interchangeable trip unit, the MXD63B500 offers a practical replacement for electrical equipment originally designed around this breaker type. Its interrupting ratings include 25kA at 600VAC, 50kA at 480VAC, and 65kA at 240VAC, making it suitable for applications where these specific electrical ratings are required. The breaker also carries a 30kA interrupting Rating at 250VDC for applicable two-pole configurations. Built for long-term service, the MXD63B500 features a molded case and includes load-side lugs for electrical connections. Measuring 16 inches high, 9 inches wide, and 6 inches deep, its dimensions matter when matching existing mounting arrangements and available enclosure space. Whether you're maintaining an established power distribution system, replacing a matching circuit breaker, or servicing legacy industrial equipment, the MXD63B500 offers the familiar configuration and specified electrical characteristics needed to help maintain system compatibility without unnecessary equipment modifications.

Key Features and Benefits

• Designed for electrical distribution applications requiring a 500A molded case circuit breaker.
• Provides three-pole circuit protection for compatible three-phase AC electrical systems.
• Supports form, fit, and functional replacement in equipment originally configured for an MXD6 breaker with matching specifications.
• Rated at 25kA at 600VAC, 50kA at 480VAC, and 65kA at 240VAC for applications within the stated ratings.
• Provides a 30kA interrupting Rating at 250VDC when used in an approved two-pole configuration.
• Features an integrated trip-unit arrangement designed to maintain the breaker's specified protection configuration.
• Includes load-side lugs for connection to compatible electrical conductors.
• Built for lasting service in electrical distribution equipment when properly installed and maintained.
• The 16" H × 9" W × 6" D dimensions help technicians evaluate replacement fit and enclosure clearance.

Technical Specifications

• Part Number: MXD63B500
  
• Product Type: Molded Case Circuit Breaker (MCCB)
  
• Series / Type: MXD6
  
• Amperage Rating: 500 Amps
  
• Number of Poles: 3
  
• Trip Unit: Non-Interchangeable
  
• Interrupting Rating at 600VAC: 25kAIC
  
• Interrupting Rating at 480VAC: 50kAIC
  
• Interrupting Rating at 240VAC: 65kAIC
  
• DC Interrupting Rating: 30kAIC at 250VDC (2-Pole Applications)
  
• Dimensions:
  • Height: 16.0 Inches
  • Width: 9.0 Inches
  • Depth: 6.0 Inches
• Connection Hardware: Load-Side Lugs Included
  
• Construction: Molded Case
  
• Primary Application: Compatible Commercial and Industrial Electrical Distribution Systems
  

Material Compliance and Certifications

• The MXD63B500 features molded-case construction for electrical distribution and circuit protection applications. Its specified voltage, amperage, and interrupting ratings provide important information for evaluating suitability within an existing electrical installation.
• Specific UL listings, CSA certifications, ANSI standards, RoHS compliance, and material composition details have not been independently verified for this part number. Applicable certifications and compliance requirements should be confirmed using the manufacturer's documentation and the markings on the individual breaker.

Where It Works Best

• The MXD63B500 500A 3-Pole Circuit Breaker is particularly suited for maintaining existing electrical installations that require the MXD6 series configuration and its specific electrical characteristics. Its primary value lies in matching the form, fit, and function of the breaker originally specified for the equipment.