MD63T500 - 500Amp Trip Unit

MD63T500 - 500Amp Trip Unit

The MD63T500 is a 500 amp, 3-pole thermal-magnetic trip unit for the MD frame, intended for applications where the catalog number, frame, amperage, and electrical ratings must match existing equipment. For replacement in your compatible legacy equipment, verify the MD frame, 500A rating, three-pole configuration, thermal-magnetic trip design, and required assembly components before installation.

Key Features and Benefits

• 500 Amp Trip Unit: Rated at 500A for compatible MD-frame equipment requiring this specific ampere rating.
• Three-Pole Configuration: The supplied manufacturer data identifies the associated breaker configuration as 3-pole.
• Thermal-Magnetic Design: Uses a thermal-magnetic trip unit, an important functional specification when matching existing equipment.
• MD Frame Application: Specifically identified as a trip unit for the MD frame, helping narrow compatibility when sourcing a replacement.
• Trip Unit Only: MD63T500 is identified as TU ONLY. This distinction matters because it is not represented here as a complete breaker assembly.

Technical Specifications

• Catalog Number: MD63T500
  
• Article Number: US2\:MD63T500
  
• Product Description: Breaker MD 3P 500A 600V 25KA TU Only
  
• Product Type: Thermal-Magnetic Trip Unit
  
• Application: MD Frame
  
• Product Family: MD6, 25KAIC, 600VAC
  
• Amperes: 500A
  
• Poles: 3
  
• Voltage Rating: 600V
  
• Associated Breaker Interrupting Rating at 600V: 25kAIC
  
• Associated Breaker Interrupting Rating at 480V: 50kAIC
  
• Breaking Capacity: Standard Breaking Capacity
  
• Manufacturer Designation: TU Only
  
• Net Weight: 5.851 lb
  
• UPC: 783643214811
  
• Commodity Code: 85363099
  
• Country of Origin: Mexico
  

Material Compliance and Certifications

The supplied manufacturer information states that the associated MD-frame breaker configuration meets UL 489 and IEC 60947-2 standards. Because the MD63T500 is identified as a trip unit only, verify whether those standards apply to the trip unit or the complete breaker assembly for any application requiring certification status.

Where It Works Best

The MD63T500 500A trip unit is best considered for compatible existing or legacy MD-frame electrical equipment where the required replacement calls for this exact catalog number or a matching 500 amp, 3-pole thermal-magnetic trip configuration. This is especially important with older electrical equipment, where matching only the ampere rating isn't enough.

Before treating the MD63T500 as a form, fit, and functional replacement, verify the MD frame, 500A rating, three-pole configuration, thermal-magnetic trip type, voltage requirements, and full breaker-assembly requirements. Because this product is explicitly identified as TU ONLY, don't assume that the breaker frame, lugs, or other components are included simply because they appear in the broader manufacturer description.