LD63T500 - 500Amp Trip Unit

LD63T500 - 500Amp Trip Unit

The LD63T500 is a 500A, 3-pole thermal-magnetic trip unit designed for LD frame applications. Labeled as "TU ONLY," it must be paired with compatible components, as it’s not a complete breaker assembly. For maintenance or replacements, ensure it matches your equipment’s requirements: 500A rating, three-pole configuration, voltage, interrupting capacity, and thermal-magnetic characteristics. When selected and installed correctly, the LD63T500 delivers reliability and performance in its intended application.

Key Features and Benefits

• 500A thermal-magnetic trip unit
• 3-pole configuration
• Intended for LD frame applications
• 600V rating
• Clearly designated TU ONLY, helping buyers distinguish it from a complete breaker assembly
• Manufacturer specifications reference TA2J6500 line- and load-side lugs
• Referenced conductor range: 3/0 AWG–500 kcmil copper
• Referenced conductor range: 4/0 AWG–500 kcmil aluminum
  

Technical Specifications

• Catalog Number / MFN: LD63T500
  
• Article Number: US2:LD63T500
  
• Manufacturer Designation: TU Only
  
• Product Type: Thermal-Magnetic Trip Unit
  
• Frame: LD
  
• Rated Current: 500A
  
• Poles: 3
  
• Voltage: 600V
  
• AIC at 600V: 25kA
  
• AIC at 480V: 35kA
  
• Breaking Capacity Classification: Standard
  
• Referenced Lug Type: TA2J6500, line and load side
  
• Referenced Copper Conductor Range: 3/0 AWG–500 kcmil
  
• Referenced Aluminum Conductor Range: 4/0 AWG–500 kcmil
  
• Published Dimensions: 7.5"W x 11"H x 4"D
  
• Net Weight: 2.599 lb
  
• Country of Origin: Mexico
  

Material Compliance and Certifications

• Meets UL 489
• Meets IEC 60947-2
• Manufacturer data reports RoHS substance-restriction compliance since July 14, 2008
• REACH Article 33 information is referenced; this is not presented here as a blanket REACH compliance claim
• Manufacturer information references WEEE take-back obligations
  

Where It Works Best

The LD63T500 makes the most sense when you're servicing equipment that specifically requires a 500A, 3-pole thermal-magnetic trip unit for an LD frame. This is especially useful in legacy equipment where maintaining the correct electrical and mechanical configuration is the priority.

Check the interrupting ratings against the application: 25 kA at 600V and 35 kA at 480V. Those values must match the equipment and available fault current.