LD63B250 - 250Amp Circuit Breaker

LD63B250 - 250Amp Circuit Breaker

The LD63B250 is a 250-amp, 3-pole molded case circuit breaker with a thermal-magnetic trip unit. It handles up to 600 volts and offers an interrupting capacity of 25kA at 600V and 35kA at 480V. When replacing a breaker in existing equipment, make sure the LD frame configuration fits your maintenance needs.

Key Features and Benefits

• 250A rating with a 3-pole configuration
• LD frame molded case circuit breaker
• Thermal-magnetic trip unit
• Rated for 600V
• Standard 40°C breaker rating
• TA2J6500 load-side lugs included
• Accepts specified copper or aluminum conductors
• Meets UL 489 and IEC 60947-2 standards
• Defined dimensions make it easier to check physical compatibility with existing equipment
  

Technical Specifications

• Catalog Number: LD63B250
  
• Product Type: Molded Case Circuit Breaker
  
• Frame: LD
  
• Trip Type: Thermal-Magnetic
  
• Amperage: 250A
  
• Number of Poles: 3
  
• Voltage Rating: 600V
  
• AIC at 600V: 25kA
  
• AIC at 480V: 35kA
  
• Temperature Rating: 40°C
  
• Load-Side Lugs: TA2J6500
  
• Copper Conductor Range: 3/0 AWG–500 kcmil
  
• Aluminum Conductor Range: 4/0 AWG–500 kcmil
  
• Dimensions: 7.5"W x 11"H x 4"D
  
• Net Weight: 19.996 lb
  
• Country of Origin: Mexico
  

Material Compliance and Certifications

The LD63B250 is specified as meeting UL 489 and IEC 60947-2 standards.

The manufacturer also provides information related to REACH Article 33 and references WEEE (2012/19/EU) take-back obligations. The supplied manufacturer data did not include RoHS compliance information, and it did not include a SCIP number.

Where It Works Best

The LD63B250 is a good fit for compatible existing and legacy electrical equipment that requires a 250A, 3-pole LD frame breaker with the ratings and connection arrangement listed here.

Start with the system voltage and available fault current. The breaker is rated 25kA at 600V and 35kA at 480V, so the interrupting rating must meet the installation requirements.