MXD63B800 - 800Amp Circuit Breaker

MXD63B800 - 800Amp Circuit Breaker

Need an MXD63B800 800 Amp Circuit Breaker to keep your existing electrical system running as intended? When you're maintaining older electrical equipment, finding a breaker with the right specifications matters. The MXD63B800 Molded Case Circuit Breaker is designed for applications requiring an 800-amp, 3-pole configuration from the MXD6 series. Built to last, this breaker features a durable molded case, a non-interchangeable trip unit, and load-side lugs for compatible electrical connections.

With interrupting ratings of 25kA at 600VAC, 50kA at 480VAC, and 65kA at 240VAC, the MXD63B800 is designed to handle the circuit protection requirements of appropriately rated electrical distribution systems. It also carries a 30kA interrupting rating at 250VDC for specified 2-pole applications. Measuring 16 inches tall, 9 inches wide, and 6 inches deep, this breaker has defined dimensions that make it easier to check the fit against your existing equipment. Whether you're replacing a matching breaker in an industrial facility, maintaining a commercial electrical installation, or servicing legacy power distribution equipment, the MXD63B800 helps you preserve the original electrical configuration without making unnecessary changes. It's a practical choice when the right fit, electrical ratings, and circuit protection characteristics matter most.

Key Features and Benefits

• Need a breaker for an existing 800A circuit? The MXD63B800 is designed for electrical distribution systems requiring this specific current rating.
• Its three-pole design accommodates compatible three-phase electrical applications.
• Designed for equipment that requires the MXD6 breaker configuration, helping you maintain the original form, fit, and function.
• Features a fixed trip unit arrangement to match the original breaker's protection characteristics.
• Provides 25kAIC at 600VAC, 50kAIC at 480VAC, and 65kAIC at 240VAC for applications that match these ratings.
• Rated at 30kAIC at 250VDC for specified 2-pole applications.
• Comes with load-side lugs to accommodate compatible conductor connections.
• Built to last, with an enclosed design that houses and protects the internal breaker components.
• Measuring 16" H x 9" W x 6" D, the breaker allows you to compare its physical dimensions with the available space in your existing electrical equipment.

Technical Specifications

• Part Number: MXD63B800
  
• Product Type: Molded Case Circuit Breaker (MCCB)
  
• Breaker Type / Series: MXD6
  
• Amperage Rating: 800 Amps
  
• Number of Poles: 3
  
• Trip Unit Type: Non-Interchangeable
  
• A.I.C. Rating at 600VAC: 25kAIC
  
• A.I.C. Rating at 480VAC: 50kAIC
  
• A.I.C. 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
• Construction: Molded Case
  
• Included Connections: Load-Side Lugs
  
• Application: Compatible with Commercial and Industrial Electrical Distribution Systems
  

Material Compliance and Certifications

• When replacing a circuit breaker, always prioritize electrical compatibility and safety. The MXD63B800 features molded case construction and specified interrupting ratings for use in electrical distribution systems that meet its application requirements.
• Specific UL listing, CSA certification, and material compliance information have not been established from the available product specifications. Check the manufacturer's documentation and the breaker's identification markings to confirm applicable certifications and standards.
• Before installation, verify that the MXD63B800 meets the electrical ratings, mounting requirements, terminal specifications, and protection characteristics of your existing equipment. Follow applicable electrical codes and manufacturer requirements during installation.

Where It Works Best

• Working with an existing electrical system? You know that replacing a circuit breaker isn't simply about matching the amperage. The physical dimensions, pole configuration, interrupting capacity, and trip characteristics must match the equipment you're maintaining.
• The MXD63B800 800 Amp 3-Pole Molded Case Circuit Breaker is intended for compatible electrical distribution systems where maintaining the original breaker configuration is essential.