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Square D LGL36400M37X - Molded Case Circuit Breaker 400A 600V

Square D
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Square D LGL36400M37X is a molded case circuit breaker designed for providing solid-state protection against short-circuit faults 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 13.7 lb. This breaker is constructed for feed-thru connection with lug terminals, supports wire sizes from 2/0 AWG to 500 kcmil, and operates reliably within a temperature range of -2 to 70 °C. It complies with UL, CSA, NEMA, NOM, and IEC 60947-2 standards, ensuring suitability for demanding applications in commercial and industrial facilities where a 35kA interrupting capacity at 480V is required.

Key Features & Specifications
  • Type: LGL Molded Case Circuit Breaker with Solid State Protection, Instantaneous (I) Trip Function
  • 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
  • Weight: 13.7 lb
  • Standards: UL, CSA, NEMA, NOM-003-SCFI-2000, IEC 60947-2
  • Applications: Industrial Power Distribution, Panelboards, Switchboards
  • Switch Type: Circuit Breaker
  • Configuration: Fixed
  • Phase: 3
  • Poles: 3
  • AIC Rating: 35kA @ 480V
  • Connection: Feed-Thru
  • Terminal Connection: Lug
  • Protection: Solid State
  • Functions: Instantaneous Trip
  • Frame Size: L Frame
  • Trip Type: Instantaneous
  • Breaker Type: Molded Case
  • Temp Rating: -2 to 70 °C (28 to 158 °F)
  • Wire Size: 2 x AWG 2/0 to 500 kcmil (Aluminium/Copper)
  • Certification: UL, CSA, NOM
  • Family: Powerpact
  • Country of Origin: United States


Product Identification
  • UPC: 785901435785
  • GTIN: 00785901435785