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Square D LDL36400U33X - Molded Case Breaker 400A 600V 3P

Square D
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Square D LDL36400U33X is a molded case circuit breaker designed for providing comprehensive overcurrent 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 15 lb. This solid-state protection device utilizes an LSI (Long-time, Short-time, Instantaneous) trip unit and is engineered to comply with UL, CSA, NEMA, NOM, and IEC 60947-2 standards. Its feed-thru lug connection and ability to handle conductors from 2/0 AWG to 500 kcmil make it suitable for main feeder and branch circuit protection in industrial facilities, manufacturing plants, and commercial buildings.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, Solid State Protection, LSI Trip 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) (H x W x D)
  • Standards: UL, CSA, NEMA, NOM-003-SCFI-2000, IEC 60947-2
  • Applications: Industrial Power Distribution, Main Feeder & Branch Circuit Protection
  • Switch Type: Circuit Breaker
  • Configuration: Fixed
  • Phase: 3
  • Poles: 3
  • AIC Rating: 18kA @ 480V
  • Connection: Feed-Thru
  • Terminal Connection: Lug
  • Protection: Solid State, LSI (Long Time, Short Time, Instantaneous)
  • Functions: LSI Trip
  • Frame Size: L Frame
  • Trip Type: Solid State
  • Wire Size: 2 x AWG 2/0...500 kcmil aluminium/copper
  • Certification: UL, CSA, NOM
  • Temp Rating: 28-158 °F (-2-70 °C)
  • Weight: 15 lb
  • Family: Powerpact
  • Country of Origin: Mexico


Product Identification
  • UPC: 078590195435
  • GTIN: 00785901954354