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Square D LJA36600U43X - Molded Case Breaker 600A 600V 3P

Square D
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The Square D LJA36600U43X is a Powerpact L Frame molded case circuit breaker designed to provide reliable overcurrent and short-circuit protection for three-phase industrial power distribution systems. It features a solid-state LSI (Long-Time, Short-Time, Instantaneous) trip unit with a 600A current rating and a 600V AC voltage rating, housed in a compact, robust enclosure measuring 340 mm H x 140 mm W x 110 mm D and weighing 14 lb. This unit is certified to UL, CSA, NOM, and IEC 60947-2 standards and is constructed for an operating temperature range of -2 to 70 °C. Its I-Line style plug-in connection with lug terminals accommodates conductors from 2/0 AWG to 500 kcmil, making it suitable for main feeder and branch circuit protection in commercial and industrial panelboards with an interrupting capacity of 65kA at 480V AC.

Key Features & Specifications
  • Type: Powerpact L Frame, Molded Case, Solid State Protection, LSI Trip Functions
  • Voltage Rating: 600V AC
  • Current Rating: 600A
  • Dimensions: 340 mm H x 140 mm W x 110 mm D (13.4 in x 5.5 in x 4.3 in)
  • Standards: UL, CSA, NEMA, NOM-003-SCFI-2000, IEC 60947-2
  • Applications: Industrial Power Distribution, Main Feeder & Branch Circuit Protection
  • Switch Type: Circuit Breaker
  • Configuration: 3-Pole
  • Temp Rating: -2 to 70 °C (28 to 158 °F)
  • Phase: 3
  • AIC Rating: 65kA @ 480V AC
  • Connection: I-Line Style Plug-In, Lug Terminal
  • Poles: 3
  • Protection: Solid State Trip Unit
  • Functions: Long-Time, Short-Time, Instantaneous (LSI)
  • Frame Size: L Frame
  • Wire Size: 2 x AWG 2/0 to 500 kcmil (Aluminium/Copper)
  • Certification: UL, CSA, NOM
  • Terminal Connection: Lug
  • Frequency Rating: 50/60 Hz
  • Phase Connection: 3-Phase
  • Compatible Frames: I-Line Panelboards
  • Installation Type: Plug-In Mount
  • Breaker Frame: L Frame
  • Operating Temperature Maximum Celsius: 70 °C
  • Country of Origin: United States
  • Weight: 14 lb (13.999)


Product Identification
  • UPC: 785901486916
  • GTIN: 00785901486916