Square D LJL36400U31X Molded Case Circuit Breaker – 400A – 3-Pole / 3-Phase – 600V – 65kA @ 480V – Feed-Thru – PowerPact LJL Series

The Square D LJL36400U31X is a 400A, 3-pole, 3-phase molded case circuit breaker from the Square D PowerPact LJL Series. It features solid-state electronic protection with a non-interchangeable MicroLogic Standard 3.3 trip and Long-Time and Instantaneous (LI) trip functions.

The LJL36400U31X is rated for 600V and provides a 65kA interrupting rating at 480V. It features a current-limiting design, feed-thru configuration, and line- and load-side lug terminals. It is also specified for use in 2-pole applications.

Specifications:

• Manufacturer: Schneider Electric / Square D
• Product Type: Molded Case Circuit Breaker
• Product Family: PowerPact
• Series: LJL
• Type: LJL
• Catalog No.: LJL36400U31X
• Current Rating: 400A
• Number of Poles: 3-Pole
• Phase: 3-Phase
• Voltage Rating: 600V
• Interrupting Rating: 65kA @ 480V
• Protection Type: Solid-State Electronic
• Trip Unit: MicroLogic Standard 3.3
• Trip Type: Non-Interchangeable
• Trip Functions: Long-Time and Instantaneous (LI)
• Interrupting Capacity: Current Limiting
• Mounting / Configuration: Feed-Thru
• Terminal Configuration: Line- and Load-Side Lug Terminals
• Application: Electrical Distribution and Overcurrent Protection
• Additional Application: Suitable for 2-Pole Applications
• Brand: Square D

Part Numbers & Identification:

• Manufacturer Part Number (MPN): LJL36400U31X
• Catalog Number: LJL36400U31X
• Product Family: Square D PowerPact Molded Case Circuit Breakers
• Series: LJL
• Type: LJL
• Brand: Square D
• Manufacturer: Schneider Electric
• Product Type: Molded Case Circuit Breaker
• Model: LJL36400U31X
• Breaker Configuration: 3-Pole, 400A
• Trip Unit: MicroLogic Standard 3.3
• upc:785901132769

Compatibility:

Designed for use with compatible Square D PowerPact LJL Series electrical distribution equipment that accepts LJL Series molded case circuit breakers. The LJL36400U31X provides 400A, 3-pole protection for compatible 600V applications, with a 65kA interrupting rating at 480V.

The breaker features a current-limiting solid-state electronic trip unit, feed-thru configuration, and line- and load-side lug terminals. It is also specified for 2-pole applications.

Always verify the specific panelboard or electrical equipment model, approved breaker type, system voltage, available fault current, pole configuration, trip-unit requirements, terminal arrangement, and installation requirements before installation.

Certifications:

• UL Listed
• PowerPact LJL Series
• 400A Rated
• 3-Pole / 3-Phase
• 600V Rated
• 65kA @ 480V Interrupting Rating
• Current-Limiting
• Solid-State Electronic Protection
• MicroLogic Standard 3.3 Trip Unit
• Long-Time and Instantaneous (LI) Trip Functions
• Non-Interchangeable Trip
• Feed-Thru Configuration
• Line- and Load-Side Lug Terminals
• Suitable for 2-Pole Applications

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