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Square D LJL36400U33X - Molded Case Circuit Breaker 400A 600V 3P

Square D
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Square D LJL36400U33X 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 x 140 mm x 110 mm (H x W x D) and weighing 17.61 lb. The breaker is constructed with lug terminals for feed-thru connection and offers LSI (Long-Time, Short-Time, Instantaneous) protection functions, complying with UL, CSA, NEMA, NOM, and IEC 60947-2 standards. Its typical applications include protecting feeders and branch circuits in commercial and industrial facilities where a 65kA interrupting capacity at 480V is required for equipment safety.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, L Frame, Solid-State Protection
  • Voltage Rating: 600V AC
  • Current Rating: 400A
  • Dimensions: 13.4 in (340 mm) x 5.5 in (140 mm) x 4.3 in (110 mm) (H x W x D)
  • Standards: UL, CSA, NEMA, NOM-003-SCFI-2000, IEC 60947-2
  • Applications: Industrial power distribution, feeder and branch circuit protection
  • Switch Type: Circuit Breaker
  • Configuration: Fixed
  • Phase: 3
  • Poles: 3
  • Connection: Feed-Thru
  • Terminal Connection: Lug
  • Wire Size: 2 x AWG 2/0...500 kcmil aluminium/copper
  • AIC Rating: 65kA @ 480V
  • Protection: Solid State
  • Functions: LSI - Long-Time, Short-Time and Instantaneous
  • Frame Size: L Frame
  • Trip Type: Thermal-Magnetic
  • Temp Rating: -2 to 70 °C (28 to 158 °F)
  • Certification: UL, CSA, NOM
  • Weight: 17.61 lb


Product Identification
  • UPC: 785901303794
  • GTIN: 00785901303794