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Schneider Electric LJA36400U44XENYH2 - 400A 3-Pole Molded Case Circuit Breaker (600V)

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Schneider Electric LJA36400U44XENYH2 is a PowerPact L-Frame molded case circuit breaker designed for overcurrent and ground-fault protection in industrial power distribution systems. This 3-pole, 400A breaker operates at 600V with a 65kA interrupting capacity at 480V, utilizing a solid-state Micrologic 6.xA LSIG trip unit with ammeter for precise long-time, short-time, instantaneous, and ground-fault protection. The unit features I-Line plug-on line connections and load-side lugs, measures 13.39 inches in height, 4.44 inches in width, and 3.09 inches in depth, weighing 20 lb, and accepts wire sizes from 2 x AWG 2/0 to 500 kcmil aluminum or copper. It complies with UL, CSA, NEMA, NOM, and IEC standards, and is rated for operation in ambient temperatures from 28 to 158 °F (-2 to 70 °C). Typical applications include panelboard integration in commercial and industrial facilities requiring reliable, adjustable protection with ground-fault detection.

Key Features & Specifications
  • Type: Molded Case
  • Family: Powerpact
  • Frame Size: L Frame
  • Poles: 3
  • Current Rating: 400 A
  • Voltage Rating: 600V
  • Phase: 3
  • AIC rating: 65kA@480V
  • Protection: Solid State
  • Functions: LSIG - Long-Time, Short-Time, Instantaneous and Ground Fault
  • Terminal Connection: I-Line, Lug
  • Connection: I-Line Style Plug-In
  • Wire Size: 2 x AWG 2/0...500 kcmil aluminum/copper
  • Dimensions: Height 13.39 in (340 mm) x Depth 3.09 in (78.49 mm) x Width 4.44 in (112.78 mm)
  • Weight: 20 lb
  • Temp Rating: 28-158 °F (-2-70 °C)
  • Certification: UL, CSA, NEMA, NOM, IEC
  • Additional Info: Terminal lug AL600LS52K3