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Square D LJF36600U33X - 600A Molded Case Breaker (65kA AIC)

Square D
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The Square D LJF36600U33X 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 voltage rating, housed in a robust bolt-on configuration measuring 340 mm H x 140 mm W x 110 mm D and weighing 15 lb. This unit is engineered to comply with UL, CSA, NEMA, NOM, and IEC 60947-2 standards, ensuring safe operation in demanding environments. Its 65kA interrupting rating at 480V and compatibility with conductors from 2/0 AWG to 500 kcmil make it suitable for protecting feeders and mains in commercial and industrial panelboards and switchboards.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, L-Frame, Solid State Protection, Bolt-On Connection
  • 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 Feeder & Main Circuit Protection
  • Phase: 3
  • Poles: 3
  • AIC Rating: 65kA @ 480V AC
  • Functions: LSI (Long-Time, Short-Time, Instantaneous)
  • Frame Size: L Frame
  • Protection: Solid State Trip Unit
  • Connection: Bolt-On
  • Wire Size: 2 x AWG 2/0 to 500 kcmil (Aluminium/Copper)
  • Certification: UL, CSA, NOM
  • Weight: 15 lb
  • Family: Powerpact
  • Country of Origin: United States


Product Identification
  • UPC: 606482046309
  • GTIN: 03606482046306