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Square D LLL36400U33X - Molded Case Circuit Breaker 400A 600V 3P

Square D
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Square D LLL36400U33X is a molded case circuit breaker designed for providing robust overcurrent and short-circuit protection in demanding 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 15 lb. This unit employs solid-state protection with LSI (Long-Time, Short-Time, Instantaneous) trip functions and is certified to UL, CSA, NOM, and IEC 60947-2 standards. It is engineered for applications requiring a 100kA interrupting capacity at 480V and a feed-thru connection for conductors ranging from 2/0 AWG to 500 kcmil.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, LLL Type, Solid-State Protection with LSI Trip Functions
  • Voltage Rating: 600V AC
  • Current Rating: 400A
  • Dimensions: 13.4 in H x 5.5 in W x 4.3 in D (340 mm x 140 mm x 110 mm)
  • Weight: 15 lb
  • Standards: UL, CSA, NEMA, NOM-003-SCFI-2000, IEC 60947-2
  • Applications: Industrial Power Distribution, Panelboards, Switchboards
  • Phase: 3
  • Poles: 3
  • AIC Rating: 100kA @ 480V
  • Connection: Feed-Thru
  • Wire Size: 2 x AWG 2/0 to 500 kcmil (Aluminium/Copper)
  • Frame Size: L Frame
  • Protection: Solid State
  • Functions: Long-Time, Short-Time, Instantaneous (LSI)
  • Temp Rating: -2 to 70 °C (28 to 158 °F)
  • Certification: UL, CSA, NOM
  • Family: Powerpact
  • Country of Origin: United States


Product Identification
  • UPC: 785901932826
  • GTIN: 00785901932826