LJA36400U33X - 400 Amp Circuit Breaker

LJA36400U33X - 400 Amp Circuit Breaker

When LJA36400U33X is the number on the breaker you're trying to match, the 400A rating is only part of what you need to know. This is a 400A, 3-pole PowerPacT L-frame molded case circuit breaker designed for compatible I-Line electrical distribution equipment. It's rated for systems up to 600VAC and uses a MicroLogic 3.3S electronic trip unit with LSI protection.

Key Features and Benefits

• 400A, 3-pole molded case circuit breaker
• PowerPacT L-frame construction
• Designed for compatible I-Line electrical distribution equipment
• Rated for systems up to 600VAC
• MicroLogic 3.3S electronic trip unit
• LSI protection for long-time, short-time, and instantaneous functions
• 80% continuous-current rating
• ABC phase arrangement
• Protects from overloads and short circuits
• Suitable for use as a main panel disconnect in compatible control-panel applications when the system design calls for it
• Well suited to form, fit, and functional replacement work where the existing equipment requires the LJA36400U33X configuration

Technical Specifications

• Catalog Number: LJA36400U33X
  
• Product Type: Molded Case Circuit Breaker
  
• Product Family: PowerPacT L
  
• Frame: L-Frame
  
• Rated Current: 400A
  
• Number of Poles: 3
  
• Maximum Voltage: 600VAC
  
• Mounting / Connection Style: I-Line
  
• Trip Unit: MicroLogic 3.3S
  
• Trip Unit Technology: Electronic
  
• Protection Functions: LSI
  
• Continuous-Current Rating: 80%
  
• Phase Arrangement: ABC
  
• Breaking Capacity Designation: J
  
• Interrupting Rating at 600VAC: 25 kA
  

Material Compliance and Certifications

Manufacturer information for the LJA36400U33X identifies the breaker as UL 489 Listed and lists CSA, NEMA, NMX, VDE, BS, CCC, and IEC certifications, along with CE marking.

Current environmental information also identifies a 58% recyclability potential under the manufacturer's stated TR62635 methodology.

Where It Works Best

The LJA36400U33X 400A circuit breaker is a strong fit to investigate when you're maintaining existing or legacy I-Line electrical distribution equipment that calls for this particular L-frame configuration.