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Square D LLA36400U53X - Molded Case 400A 600V 3-Pole

Square D
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Square D LLA36400U53X is a 3-pole, 400A molded case circuit breaker from the PowerPact L frame family, designed for overcurrent protection in three-phase power distribution systems. It operates at a 600V AC voltage rating with a solid-state MicroLogic 5.3E trip unit providing LSI (Long-Time, Short-Time, Instantaneous) protection functions, and offers an interrupting rating of 100kA at 480V. The unit measures 13.4 in (340 mm) in height, 5.5 in (140 mm) in width, and 4.3 in (110 mm) in depth, weighs 17 lb, and features an I-Line style plug-in connection for panelboard mounting. It complies with UL, CSA, NEMA, NOM-003-SCFI-2000, and IEC 60947-2 standards, with certifications from UL, CSA, and NOM. This breaker is suited for industrial and commercial applications requiring reliable solid-state protection in three-phase systems.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker
  • Manufacturer: Schneider Electric
  • Family: Powerpact
  • Type: LLA
  • Current Rating: 400A
  • Voltage Rating: 600V AC
  • Poles: 3
  • Phase: 3
  • Functions: LSI - Long-Time, Short-Time and Instantaneous
  • Protection: Solid State
  • Connection: I-Line Style Plug-In
  • Interrupt Rating: 100kA @ 480V
  • Wire Size: AWG 3/0...500 kcmil aluminium/copper
  • Temp Rating: 28-158 °F (-2-70 °C)
  • Dimensions: 13.4 in (340 mm) x 5.5 in (140 mm) x 4.3 in (110 mm) (Height x Width x Depth)
  • Weight: 17 lb
  • Standards: UL, CSA, NEMA, NOM-003-SCFI-2000, IEC 60947-2
  • Certification: UL, CSA, NOM
  • Country of Origin: United States


Product Identification
  • UPC: 606486284011
  • GTIN: 03606490000000