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Square D LGL36400CU31X - Molded Case Circuit Breaker 400A 600V 3P

Square D
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Square D LGL36400CU31X is a molded case circuit breaker designed for providing reliable overcurrent and short-circuit protection in demanding three-phase industrial power distribution systems. It features a 400A current rating and a 600V AC voltage rating, housed within a compact L-frame measuring 340 mm x 140 mm x 110 mm (H x W x D) and weighing 17.059 lb. This 100% rated, solid-state protection device complies with UL, CSA, NEMA, NOM, and IEC 60947-2 standards, ensuring robust performance and safety. Its feed-thru lug connection and ability to handle wire sizes from 2/0 AWG to 500 kcmil make it suitable for main feeder and branch circuit protection in industrial panels and switchboards.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, LGL Type, Solid-State Protection, 100% Rated
  • 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 Feeders, Branch Circuits
  • Switch Type: Circuit Breaker
  • Configuration: Fixed
  • Temp Rating: -2°C to 70°C (28°F to 158°F)
  • Shipping Dimensions: Not Specified
  • Phase: 3
  • Amperage: 400A
  • AIC rating: 35kA @ 480V
  • Connection: Feed-Thru
  • Poles: 3
  • Protection: Solid State
  • Functions: LI (Long-Time and Instantaneous)
  • Frame Size: L Frame
  • Trip Type: Thermal-Magnetic (LI)
  • Panel Type: Industrial
  • Breaker Type: Molded Case
  • MCM Size: Min. 2/0 AWG, Max. 500 kcmil (Cu/Al)
  • Metal Type: Not Specified
  • Panel Style: Not Specified
  • Bus Type: Not Specified
  • Insulation Temperature: Not Specified
  • Mounting: Fixed
  • Hz: 50/60 Hz
  • Horse Power: Not Specified
  • Enclosure: Not Specified
  • Wire Size: 2 x AWG 2/0...500 kcmil aluminium/copper
  • Certification: UL, CSA, NOM
  • Circuit Breaker Mounting Style: Fixed
  • Terminal Connection: Lug
  • Frequency Rating: 50/60 Hz
  • Phase Connection: 3-Phase
  • Compatible Frames: L Frame
  • Installation Type: Fixed
  • Breaker Frame: L Frame
  • Operating Temperature Maximum Celsius: 70°C


Product Identification
  • UPC: 785901631828
  • GTIN: 00785901631828