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Square D LJA36600U31X - Molded Case Breaker 600A 600V 3P

Square D
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Square D LJA36600U31X is a molded case circuit breaker designed for providing reliable overcurrent protection in three-phase industrial power distribution systems. It features a 600A current rating and a 600V voltage rating, housed within a compact L-frame measuring 340 mm x 140 mm x 110 mm (H x W x D) and weighing 18.309 lb. This solid-state protection device complies with UL, CSA, NEMA, NOM, and IEC 60947-2 standards and is engineered for typical applications in panelboards and switchboards, offering an interrupting capacity of 65kA at 480V AC. Its I-Line style plug-in connection with lug terminals supports wire sizes from 2/0 AWG to 500 kcmil for both copper and aluminum conductors, operating effectively within a temperature range of -2 to 70 °C.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, Solid State Protection, L Frame
  • Voltage Rating: 600V AC
  • Current Rating: 600A
  • Dimensions: 13.4 in (340 mm) x 5.5 in (140 mm) x 4.3 in (110 mm) (H x W x D)
  • Weight: 18.309 lb
  • Standards: UL, CSA, NEMA, NOM-003-SCFI-2000, IEC 60947-2
  • Applications: Industrial Power Distribution, Panelboards, Switchboards
  • Switch Type: Circuit Breaker
  • Configuration: I-Line Plug-In
  • Phase: 3
  • AIC Rating: 65kA @ 480V
  • Connection: I-Line, Lug
  • Poles: 3
  • Protection: Solid State
  • Functions: LI (Long-Time and Instantaneous Trip)
  • Frame Size: L Frame
  • Trip Type: Solid State
  • Temp Rating: -2 to 70 °C (28 to 158 °F)
  • Wire Size: 2 x AWG 2/0 to 500 kcmil (Cu/Al)
  • MCM Size: Min. 2/0 AWG, Max. 500 kcmil
  • Certification: UL, CSA, NOM
  • Phase Connection: ABC
  • Terminal Connection: I-Line, Lug
  • Additional Info: Terminal lug AL600LS52K3


Product Identification
  • UPC: 785901404712
  • GTIN: 00785901404712