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Square D LJA36600U54X - Molded Case Breaker 600A 600V (3-Pole LSIG)

Square D
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Square D LJA36600U54X is a PowerPact L-Frame molded case circuit breaker designed for overcurrent and ground fault protection in industrial power distribution systems. This 600A, 3-pole breaker operates at 600VAC with a solid-state Micrologic 6.xE LSIG trip unit providing long-time, short-time, instantaneous, and ground fault protection, and it features an AIC rating of 65kA at 480V. The unit measures 13.4 in (340 mm) in height, 5.5 in (140 mm) in width, and 4.3 in (110 mm) in depth, weighs 17 lb, and utilizes I-Line style plug-in line connections with AL600LS52K3 terminal lugs on the load side, accommodating wire sizes from 2 x AWG 2/0 to 500 kcmil aluminum or copper. It complies with UL, CSA, NEMA, NOM-003-SCFI-2000, and IEC 60947-2 standards, with certifications from UL, CSA, and NOM, 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 settings requiring reliable circuit protection with energy management metering capabilities.

Key Features & Specifications
  • Type: Molded Case
  • Family: Powerpact
  • Frame Size: L Frame
  • Poles: 3
  • Current Rating: 600 A
  • Voltage Rating: 600 Vac
  • Protection: Solid State
  • Functions: LSIG - Long-Time, Short-Time, Instantaneous and Ground Fault
  • AIC rating: 65kA@480V
  • Connection: I-Line Style Plug-In
  • Terminal Connection: I-Line, Lug
  • Wire Size: 2 x AWG 2/0...500 kcmil aluminium/copper
  • Dimensions: 13.4 in (340 mm) x 5.5 in (140 mm) x 4.3 in (110 mm) (Height x Width x Depth)
  • Weight: 17 lb
  • Temp Rating: 28-158 °F (-2-70 °C)
  • Standards: UL, CSA, NEMA, NOM-003-SCFI-2000, IEC 60947-2
  • Certification: UL, CSA, NOM
  • Country of Origin: United States
  • Additional Info: Terminal lug AL600LS52K3


Product Identification
  • UPC: 606486284438
  • GTIN: 03606486284438