LJA36250U33X - 250 Amp Circuit Breaker

LJA36250U33X - 250 Amp Circuit Breaker

If LJA36250U33X is the number you're trying to match, don't stop at the 250A rating. That catalog number packs a lot. This is a 250A, 3-pole PowerPacT L-frame molded case circuit breaker for compatible I-Line electrical distribution equipment, rated for operation up to 600VAC at 50/60 Hz.

Key Features and Benefits

• 250A, 3-pole molded case circuit breaker
• PowerPacT L-frame configuration
• Designed for compatible I-Line electrical distribution equipment
• Maximum operating voltage of 600VAC
• 50/60 Hz frequency
• MicroLogic 3.3S electronic trip unit
• LSI protection with long-time, short-time, and instantaneous functions
• 80% continuous-current rating
• ABC phase arrangement
• Provides overload and short-circuit protection
• Can be applied as a main panel disconnect in compatible control-panel installations when the system design calls for it
• Relevant for form, fit, and functional replacement applications requiring the LJA36250U33X configuration

Technical Specifications

• Catalog Number: LJA36250U33X
  
• Product Type: Molded Case Circuit Breaker
  
• Product Family: PowerPacT L
  
• Frame: L-Frame
  
• Rated Current: 250A
  
• Poles: 3
  
• Maximum Voltage: 600VAC
  
• Frequency: 50/60 Hz
  
• Connection / Mounting Style: I-Line
  
• Trip Unit: MicroLogic 3.3S
  
• Trip Technology: Electronic
  
• Protection Functions: LSI
  
• Continuous-Current Rating: 80%
  
• Phase Arrangement: ABC
  
• Breaking Capacity Designation: J
  
• Interrupting Rating at 600VAC: 25 kA
  
• Standard Lug Kit: AL400L61K3
  
• Copper Conductor Range: (1) 2 AWG–600 kcmil
  
• Aluminum Conductor Range: (1) 2 AWG–500 kcmil
  
• Terminal Shield: Short
  

Material Compliance and Certifications

Manufacturer information identifies the LJA36250U33X as UL 489 Listed and also lists CSA, NEMA, NMX, VDE, BS, CCC, and IEC certifications, along with CE marking.

Where It Works Best

The LJA36250U33X makes the most sense when you're dealing with existing electrical distribution equipment that specifically calls for this 250A, 3-pole I-Line L-frame configuration.

A useful place to start is the trip unit. This isn't a thermal-magnetic breaker. It uses a MicroLogic 3.3S electronic trip unit with LSI protection. That's a meaningful identifier when you're looking at an existing breaker and trying to determine what belongs back in the equipment.