LD63B250L - 250Amp Circuit Breaker

LD63B250L - 250Amp Circuit Breaker

The LD63B250L is a 250-amp, 3-pole LD frame molded-case circuit breaker with a thermal-magnetic trip unit, designed for applications that require this specific electrical and physical configuration. One detail that helps distinguish the LD63B250L when you're checking a replacement is the connection setup: TA2J6500 lugs are provided on both the line and load sides. These lugs accommodate 3/0 AWG through 500 kcmil copper or 4/0 AWG through 500 kcmil aluminum conductors. For existing or legacy installations, evaluate the LD63B250L by matching the full set of specifications—not just the 250A rating.

Key Features and Benefits

• 250A, 3-pole configuration for equipment requiring this specific LD frame arrangement
• 600V rating for compatible electrical systems
• Thermal-magnetic trip unit
• Standard 40°C breaker
• Line and load side TA2J6500 lugs included
• Lug range supports specified copper and aluminum conductors
  

Technical Specifications

• Catalog Number: LD63B250L
  
• Article Number: US2\:LD63B250L
  
• Product Type: Molded Case Circuit Breaker
  
• Frame: LD
  
• Trip Unit: Thermal-Magnetic
  
• Rated Current: 250A
  
• Number of Poles: 3
  
• Voltage Rating: 600V
  
• Interrupting Rating at 600V: 25kA
  
• Interrupting Rating at 480V: 35kA
  
• Temperature Rating: 40°C
  
• Line-Side Lugs: TA2J6500
  
• Load-Side Lugs: TA2J6500
  
• Copper Wire Range: 3/0 AWG–500 kcmil
  
• Aluminum Wire Range: 4/0 AWG–500 kcmil
  
• Dimensions: 7.5"W x 11"H x 4"D
  
• Net Weight: 19.533 lb
  
• Country of Origin: Mexico
  

Material Compliance and Certifications

The LD63B250L meets UL 489 and IEC 60947-2 standards, giving buyers specific compliance information to reference when checking an existing installation's requirements.

The supplied environmental information also references REACH Article 33 and WEEE (2012/19/EU) take-back obligations. RoHS compliance information is listed as not available, and the supplied manufacturer data did not include a SCIP number.

Where It Works Best

The LD63B250L is intended for compatible equipment that calls for a 250A, 3-pole LD frame thermal-magnetic molded case circuit breaker with line and load lugs. That makes it particularly relevant for maintenance and replacement projects involving existing or legacy electrical equipment where maintaining the required form, fit, and function is important.

Check several details before treating it as a match. At 600V, the interrupting rating is 25kA; at 480V, it is 35kA. Use the rating that matches the actual system voltage, and verify that it meets the equipment and available fault-current requirements.