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Square D LDA36400CU33X - Molded Case Circuit Breaker 400A 600V (3-Pole)

Square D
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Square D LDA36400CU33X is a molded case circuit breaker designed for providing reliable overcurrent and short-circuit protection in 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 (HxWxD) and weighing 17 lb. This 100%-rated, 3-pole breaker utilizes solid-state LSI (Long-Time, Short-Time, Instantaneous) protection and 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 and is typically applied in panelboards and switchboards requiring an interrupting capacity of 18kA at 480V AC.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, Solid State Protection, LSI Functions
  • 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) (HxWxD)
  • Standards: UL, CSA, NEMA, NOM-003-SCFI-2000, IEC 60947-2
  • Applications: Industrial Power Distribution, Panelboards, Switchboards
  • Switch Type: Circuit Breaker
  • Configuration: Plug-In
  • Poles: 3
  • Phase: 3
  • AIC Rating: 18kA @ 480V AC
  • Connection: I-Line Style Plug-In, Lug Terminal
  • Protection: Solid State (LSI)
  • Functions: Long-Time, Short-Time, Instantaneous
  • Frame Size: L Frame
  • Breaker Type: 100% Rated
  • Temp Rating: -2 to 70 °C (28 to 158 °F)
  • 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: 785901609506
  • GTIN: 00785901609506