LD63B500L - 500Amp Circuit Breaker

LD63B500L - 500Amp Circuit Breaker

When you're replacing a breaker in existing equipment, you want the ratings, connections, and physical size to match what the application requires. The LD63B500L is a 500A, 3-pole LD-frame molded case circuit breaker with a thermal-magnetic trip unit and a 600V rating. For existing and legacy electrical equipment, the LD63B500L makes sense as a form-, fit-, and function-replacement when its specifications match the application. Properly selected, installed, and operated within those ratings, it's built to last in its intended application.

Key Features and Benefits

• 500A, 3-pole configuration for equipment requiring these specific electrical characteristics
• Rated for 600V
• Thermal-magnetic trip unit
• LD frame construction
• Standard 40°C breaker
• TA2J6500 lugs included on both line and load sides
• Lug range of 3/0 AWG–500 kcmil copper
• Lug range of 4/0 AWG–500 kcmil aluminum
• Useful for form, fit, and functional replacement when the existing equipment calls for matching specifications
  

Technical Specifications

• Catalog Number: LD63B500L
  
• Article Number: US2:LD63B500L
  
• Device Type: Molded Case Circuit Breaker (MCCB)
  
• Frame: LD
  
• Rated Current: 500A
  
• Number of Poles: 3
  
• Voltage Rating: 600V
  
• Trip Unit: Thermal-Magnetic
  
• Interrupting Capacity, 600V: 25kA
  
• Interrupting Capacity, 480V: 35kA
  
• Temperature Rating: 40°C
  
• Line-Side Lugs: TA2J6500, included
  
• Load-Side Lugs: TA2J6500, included
  
• Copper Wire Range: 3/0 AWG–500 kcmil
  
• Aluminum Wire Range: 4/0 AWG–500 kcmil
  
• Dimensions: 7.5"W x 11"H x 4"D
  
• Net Weight: 19.533 lb
  
• Country of Origin: Mexico
  

Material Compliance and Certifications

• UL 489
• IEC 60947-2
• REACH Article 33: REACH information is referenced in the manufacturer documentation; blanket REACH compliance should not be assumed
• WEEE: Take-back obligations are referenced in the manufacturer documentation
  

Where It Works Best

The LD63B500L is best considered when you're working with existing or legacy equipment that requires a 500A, 3-pole LD-frame thermal-magnetic circuit breaker. Rather than matching only the amp rating, work through the characteristics that affect compatibility.

For 600V applications, the specified interrupting capacity is 25kA. At 480V, it's 35kA. Your system rating must meet the available fault current and equipment requirements.