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Square D LJA36400U33XYP - Molded Case Circuit Breaker 400A 600V 3P

Square D
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Square D LJA36400U33XYP is a molded case circuit breaker designed for providing solid-state protection in three-phase industrial power distribution systems. It features a 400A current rating and a 600V voltage rating, housed within a compact L Frame measuring 340 mm H x 140 mm W x 110 mm D and weighing 18.98 lb. The breaker is constructed for I-Line style plug-in connection with lug terminals, compliant with UL, CSA, NEMA, NOM, and IEC 60947-2 standards. Its LSI (Long-Time, Short-Time, Instantaneous) trip functions and 65kA interrupting capacity at 480V make it suitable for protecting feeders and branch circuits in commercial and industrial facilities, operating reliably in ambient temperatures from -2°C to 70°C.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, Solid-State Protection, LSI Trip Functions
  • Voltage Rating: 600V AC
  • Current Rating: 400A
  • Dimensions: 13.4 in (340 mm) H x 5.5 in (140 mm) W x 4.3 in (110 mm) D
  • Standards: UL, CSA, NEMA, NOM-003-SCFI-2000, IEC 60947-2
  • Applications: Industrial Power Distribution, Feeder & Branch Circuit Protection
  • Switch Type: Circuit Breaker
  • Configuration: 3-Pole
  • Phase: 3
  • AIC Rating: 65kA @ 480V
  • Connection: I-Line Style Plug-In, Lug Terminal
  • Poles: 3
  • Protection: Solid State
  • Functions: Long-Time, Short-Time, Instantaneous (LSI)
  • Frame Size: L Frame
  • Trip Type: Solid State
  • Wire Size: AWG 3/0 to 500 kcmil (Aluminium/Copper)
  • Certification: UL, CSA, NOM
  • Temp Rating: -2°C to 70°C (28°F to 158°F)
  • Family: Powerpact
  • Terminal Connection: I-Line, Lug
  • Additional Info: Terminal lug AL600LS52K3


Product Identification
  • UPC: 785901137306
  • GTIN: 00785901137306