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Up 24 months warranty.

24 months for NEW and 12 months for RECONDITIONED.

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Square D PowerPacT L, LJA36400U31X, 400A, 3P, 600V, 25kA, I-Line, MicroLogic 3.3, MCCB

In stock - 3 items available
SKU: LJA36400U31X UPC: 785901648550

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SELECT ITEM CONDITION
Regular price $1,995.00 USD
Regular price Sale $3,499.99 USD Sale price $1,995.00 USD
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Square D LJA36400U31X: 400 Amp, 3-Pole, PowerPacT L-Frame Electronic Trip MCCB, 600V, 25kA, I-Line, MicroLogic 3.3 LI, Phase ABC, 80%, UL 489.

  • Manufacturer: Schneider Electric (Square D)
  • Brand: Square D
  • Product Range: PowerPacT L-Frame (L-Frame, J Interrupt Rating)
  • UPC: 785901648550
  • Model Number: LJA36400U31X
  • Breaker Type: Molded Case Circuit Breaker (MCCB), Electronic Trip — MicroLogic 3.3, LI (Long-Time + Instantaneous), Current Limiting
  • Amperage: 400 Amps (80% continuous current rating)
  • Poles: 3-Pole
  • Phase Connection: ABC
  • Voltage: 600 Volts AC / 250 Volts DC
  • Interrupt Rating: 100 kAIC @ 240V; 65 kAIC @ 480V; 25 kAIC @ 600V; 20 kAIC @ 250V DC (UL 489)
  • Frame: L-Frame
  • Trip Unit: MicroLogic 3.3 Electronic, LI Functions; Long-Time Pickup Adjustable 0.25–1 × In
  • Mounting Mode: I-Line (plug-on bracket, line side); Mechanical Lugs (load side)
  • Terminals: AL600LF52K3 Lugs, Load Side (accepts (2) conductors per phase)
  • Wire Size: #3/0 AWG–500 kcmil Cu/Al
  • Tightening Torque: 442.5 lb-in (#3/0 AWG–500 kcmil)
  • Communication: Modbus, Ethernet
  • Dimensions: Height: 13.40 in; Width: 5.51 in; Depth: 4.33 in
  • Weight: 13.7 lbs
  • IP Rating: IP40 (front cover)
  • Certifications: UL 489, CSA (C22.2 No. 5), NOM (NMX J-266), IEC 60947-2, CCC, CE Marked, HACR Rated

This Square D LJA36400U31X PowerPacT L-Frame MCCB delivers 400 Amp, 3-Pole electronic trip protection at 600V with MicroLogic 3.3 LI functions, adjustable long-time pickup, current limiting, and Modbus/Ethernet communication for energy monitoring and management. I-Line plug-on mounting and load-side AL600LF52K3 lugs enable direct installation in Square D I-Line panelboards and switchboards for demanding commercial and industrial distribution.

New Condition

  • Products in new condition are unused and in their original state.
  • Backed by our 24-month warranty, ensuring reliability and peace of mind.

Reconditioned Condition

  • Products in reconditioned condition are previously owned but have been professionally tested and inspected to ensure full functionality.
  • May include minor repairs, such as replacing damaged screws, but are not fully refurbished.
  • Covered by our 12-month warranty, guaranteeing performance.

Free Shipping on Orders Over $250

Enjoy free standard shipping on all orders over $250!

  • Applies to the contiguous United States
  • Excludes Alaska, Hawaii, U.S. territories, and oversized items
  • No promo code needed—free shipping is automatically applied at checkout when your order total is $250 or more.

For full details, please refer to our Shipping Policy.

30-Day Hassle-Free Returns

Your satisfaction is our priority!

  • Free returns within 30 days of purchase
  • If you're not completely satisfied, we've got you covered!

For complete terms, please refer to our Return Policy.