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Square D LLA36400CU31X - Molded Case Breaker 400A 600V 3P

Square D
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Square D LLA36400CU31X is a molded case circuit breaker designed for providing reliable overcurrent protection in demanding three-phase industrial power distribution systems. It features a solid-state trip unit with long-time and instantaneous trip functions, rated for 400A at 600V AC with an interrupting capacity of 100kA at 480V. The breaker is constructed in an L frame with a compact physical footprint of 340 mm H x 140 mm W x 110 mm D and a weight of 17 lb, utilizing an I-Line style plug-in connection for conductors from 2/0 AWG to 500 kcmil. It complies with UL, CSA, NEMA, NOM, and IEC 60947-2 standards, ensuring suitability for a wide range of commercial and industrial applications where robust circuit protection is required.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, Solid State Trip Unit
  • 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
  • Switch Type: Circuit Breaker
  • Configuration: Plug-In
  • Temp Rating: -25 to 70 °C (-13 to 158 °F)
  • Phase: 3
  • AIC Rating: 100kA @ 480V
  • Connection: I-Line Style Plug-In
  • Poles: 3
  • Protection: Solid State
  • Functions: Long Time and Instantaneous Trip
  • Frame Size: L Frame
  • Trip Type: Solid State
  • Breaker Type: Molded Case
  • Wire Size: 2 x AWG 2/0...500 kcmil (Aluminium/Copper)
  • Certification: UL, CSA, NOM
  • Family: Powerpact
  • Country of Origin: United States


Product Identification
  • UPC: 060648628397
  • GTIN: 03606486283974