JD63B250 - 250Amp Circuit Breaker

JD63B250 - 250Amp Circuit Breaker

With a 250A rating, three poles, and a JD frame, the Siemens SENTRON JD63B250 has specific electrical and physical characteristics to check when replacing a breaker in existing equipment. The breaker measures 7.5 inches wide, 11 inches high, and 4 inches deep, providing you with a clear difference for comparison with the existing installation. The JD63B250 is built to last and meets UL 489 and IEC 60947-2 standards. For legacy replacement work, its amperage, frame, dimensions, interrupting ratings, and connection requirements should all be checked against the equipment specifications before installation.

Key Features and Benefits

• 250A, three-pole configuration for equipment specifically requiring these ratings.
• JD frame provides an important identifier when checking form and physical compatibility.
• Thermal-magnetic trip unit as specified by the manufacturer.
• Standard 40°C breaker rating for comparison with the requirements of the existing installation.
• TA2J6500 load-side lugs are included, so the supplied connection arrangement is clearly defined.
• Accommodates 3/0 AWG–500 kcmil copper conductors.
• Accommodates 4/0 AWG–500 kcmil aluminum conductors.
  

Technical Specifications

• Catalog Number / MFN: JD63B250
  
• Article Number: US2:JD63B250
  
• Manufacturer: Siemens
  
• Product Line: SENTRON
  
• Product Family: JD6, 25 kAIC, 600VAC
  
• Product Type: Molded Case Circuit Breaker
  
• Frame: JD
  
• Amperage Rating: 250 A
  
• Number of Poles: 3
  
• Voltage: 600VAC
  
• Trip Unit: Thermal-magnetic
  
• Temperature Rating: Standard 40°C
  
• Interrupting Rating at 600V: 25 kAIC
  
• Interrupting Rating at 480V: 35 kAIC
• Load-Side Lugs: TA2J6500
  
• Copper Wire Range: 3/0 AWG–500 kcmil
  
• Aluminum Wire Range: 4/0 AWG–500 kcmil
  
• Width: 7.5 in.
  
• Height: 11 in.
  
• Depth: 4 in.
  
• Net Weight: 19.753 lb.
  
• UPC: 783643213180
  
• Country of Origin: Mexico
  
• Standards: UL 489 / IEC 60947-2
  

Material Compliance and Certifications

According to the supplied manufacturer information, the Siemens JD63B250 meets UL 489 and IEC 60947-2 standards. The manufacturer also provides REACH Article 33 information and WEEE (2012/19/EU) take-back information.

Where It Works Best

The JD63B250 is best suited to compatible existing and legacy electrical equipment that specifically requires a 250A, three-pole JD-frame molded case circuit breaker with matching electrical ratings and physical dimensions. It's particularly important to verify the existing connection arrangement because this model comes with TA2J6500 lugs on both sides and has different specified conductor ranges for copper and aluminum.