JD63T225 - 225Amp Trip Unit

JD63T225 - 225Amp Trip Unit

The Siemens JD63T225 is a 225A, three-pole thermal-magnetic trip unit for compatible SENTRON JD-frame equipment. One detail is especially important here: Siemens identifies the JD63T225 as "TU ONLY." When you're sourcing a replacement for an existing or legacy assembly, that distinction matters. The JD63T225 is built to last, but replacement work still comes down to compatibility. Check the frame, amperage, poles, trip type, dimensions, conductor range, connections, voltage, and interrupting rating against the equipment already in place.

Key Features and Benefits

• 225A, three-pole configuration for compatible equipment requiring these exact electrical characteristics.
• Trip unit only: Siemens specifically identifies the JD63T225 as TU ONLY, an important distinction when matching replacement components.
• Thermal-magnetic trip unit as specified by the manufacturer.
• JD frame for equipment requiring the corresponding frame configuration.
• TA2J6500 lugs on both sides: Line- and load-side lugs are specified by Siemens.
• Copper and aluminum conductor compatibility: Accepts the stated wire ranges for either conductor material.
  

Technical Specifications

• Manufacturer: Siemens
  
• Catalog Number / MFN: JD63T225
  
• Article Number: US2:JD63T225
  
• Product Line: SENTRON
  
• Product Family: JD6, 25 kAIC, 600VAC
  
• Manufacturer Configuration: Trip Unit Only (TU ONLY)
  
• Frame: JD
  
• Amperage Rating: 225A
  
• Poles: 3
  
• Voltage Rating: 600V
  
• Trip Unit Type: Thermal-magnetic
  
• Interrupting Rating at 600V: 25 kAIC
  
• Interrupting Rating at 480V: 35 kAIC
  
• Line-Side Lugs: TA2J6500
  
• Load-Side Lugs: TA2J6500
  
• Copper Conductor Range: 3/0 AWG–500 kcmil
  
• Aluminum Conductor Range: 4/0 AWG–500 kcmil
  
• Dimensions: 7.5 in. W x 11 in. H x 4 in. D
  
• Net Weight: 2.2 lb
  
• UPC: 783643213456
  
• Commodity Code: 85363099
  
• Country of Origin: Mexico
  
• Standards: UL 489 / IEC 60947-2
  

Material Compliance and Certifications

According to the manufacturer information, the JD63T225 meets UL 489 and IEC 60947-2 standards. The supplied specifications do not separately identify this catalog number as UL Listed, so that designation should not be added without further documentation from the manufacturer.

Where It Works Best

The JD63T225 belongs in compatible existing and legacy JD-frame equipment where the original requirements call for this specific 225A, three-pole thermal-magnetic trip-unit configuration. Because this catalog number is identified as TU ONLY, it shouldn't be treated as interchangeable with a complete breaker simply because the amp and voltage numbers look right.