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Square D LDL36400U31X - Molded Case Breaker 400A 600V 3P

Square D
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Square D LDL36400U31X is a molded case circuit breaker designed for providing reliable overcurrent and short-circuit 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 construction measuring 340 mm x 140 mm x 110 mm (H x W x D) and weighing 16.808 lb. This solid-state protection device complies with UL, CSA, NEMA, NOM, and IEC 60947-2 standards, ensuring robust performance in demanding environments such as industrial control panels and main feeder circuits.

Key Features & Specifications
  • Type: LDL Series, Molded Case, Solid State Protection, Feed-Thru Connection
  • 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, Main Feeders, Control Panels
  • Switch Type: Circuit Breaker
  • Configuration: Fixed
  • Phase: 3
  • Poles: 3
  • AIC Rating: 18kA @ 480V
  • Connection: Lug Terminal
  • Protection: Long-Time and Instantaneous (LI) Trip Functions
  • Frame Size: L Frame
  • Trip Type: Solid State
  • Temp Rating: -2 to 70 °C (28 to 158 °F)
  • Wire Size: 2 x AWG 2/0 to 500 kcmil (Copper/Aluminum)
  • MCM Size: Min. 2/0 AWG, Max. 500 kcmil
  • Certification: UL, CSA, NOM
  • Family: Powerpact
  • Country of Origin: Mexico


Product Identification
  • UPC: 078590108330
  • GTIN: 00785901083306