MD63T600 - 600Amp Trip Unit

MD63T600 - 600Amp Trip Unit

Finding the right 600 amp trip unit for your existing MD-frame breaker means matching the details, not just the amp rating. The MD63T600 is a 600A, 3-pole thermal-magnetic trip unit intended for the MD frame and associated with the MD6, 25KAIC, 600VAC product family. The manufacturer's catalog heading specifically identifies this part as "TU ONLY," meaning trip unit only, which is an important distinction when replacing components in existing or legacy electrical equipment. For replacement work, verify the MD frame, 600A rating, three-pole configuration, thermal-magnetic trip requirements, and the rest of the breaker assembly before matching.

Key Features and Benefits

• 600A Thermal-Magnetic Trip Unit: Rated at 600 amps with thermal-magnetic operation for applications requiring this specific trip configuration.
• MD Frame Application: The MD63T600 is identified as a trip unit for the MD frame, so frame identification is essential to the replacement process.
• 3-Pole Configuration: Intended for the manufacturer's specified 600A, 3-pole breaker configuration.
• TU Only: This is a key purchasing and compatibility detail. MD63T600 is identified as a trip unit only, not a complete molded case circuit breaker.

Technical Specifications

• Catalog Number: MD63T600
  
• Article Number: US2\:MD63T600
  
• Manufacturer Catalog Description: BREAKER MD 3P 600A 600V 25KA TU ONLY
  
• Product Type: Thermal-Magnetic Trip Unit
  
• Application: MD Frame
  
• Product Family: MD6, 25KAIC, 600VAC
  
• Amperes: 600A
  
• Poles: 3
  
• Voltage: 600V
  
• Associated Breaker AIC Rating: 25kAIC @ 600V
  
• Associated Breaker AIC Rating at 480V: 50kAIC @ 480V
  
• Trip Type: Thermal-Magnetic
  
• Breaking Capacity: Standard Breaking Capacity
  
• Configuration: TU Only / Trip Unit Only
  
• Net Weight: 5.8 lb
  
• UPC: 783643214828
  
• Commodity Code: 85363099
  
• Country of Origin: Mexico
  
• Lugs Referenced: TA3K500 line- and load-side lugs
  
• Referenced Wire Range: 1/0 AWG–500 KCM
  
• Referenced Conductor Compatibility: CU/AL
  
• Referenced Breaker Dimensions (W x H x D): 9 x 16 x 6 in.
  

Material Compliance and Certifications

The supplied manufacturer information states that the associated low-voltage molded case circuit breaker configuration meets UL 489 and IEC 60947-2 standards.

Where It Works Best

The MD63T600 600 amp thermal-magnetic trip unit is best considered for compatible existing or legacy MD-frame breaker equipment where the application calls for this catalog number or matching electrical and mechanical requirements. This is especially important with older electrical equipment, where two components that share an amperage rating aren't necessarily interchangeable.