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Square D LGF36400U31X - Molded Case Frame 400A 600V 3P

Square D
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The Square D LGF36400U31X is a Powerpact LGF series molded case circuit breaker frame designed for providing long-time and instantaneous overcurrent protection in three-phase industrial power distribution systems. It features a solid-state protection system with a 400A current rating and a 600V voltage rating, housed within a compact L-frame measuring 340 mm H x 140 mm W x 110 mm D and weighing 17.02 lb. This bolt-on, three-pole frame is engineered for busbar connection, accepts wire sizes from 2/0 AWG to 500 kcmil, and is rated for an interrupting capacity of 35kA at 480V AC. It complies with major industry standards including UL, CSA, NEMA, and IEC 60947-2, and operates within an ambient temperature range of -2 to 70 °C, making it suitable for integration into panelboards and switchgear in commercial and industrial facilities.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker Frame (LGF Series), Solid State Protection
  • Voltage Rating: 600V AC
  • Current Rating: 400A
  • Dimensions: 340 mm H x 140 mm W x 110 mm D (13.4 in x 5.5 in x 4.3 in)
  • Weight: 17.02 lb
  • Standards: UL, CSA, NEMA, NOM-003-SCFI-2000, IEC 60947-2
  • Applications: Industrial Power Distribution, Panelboards, Switchgear
  • Phase: 3
  • Poles: 3
  • AIC Rating: 35kA @ 480V AC
  • Connection: Bolt-On, Busbar Connection
  • Protection: LI (Long-Time and Instantaneous)
  • Frame Size: L
  • Temp Rating: -2 to 70 °C (28 to 158 °F)
  • Wire Size: 2 x 2/0 AWG to 500 kcmil (Copper/Aluminum)
  • Certification: UL, CSA, NOM
  • MCM Size: Min. 2/0 AWG, Max. 500 kcmil
  • Country of Origin: Mexico
  • Additional Info: Frame only; does not include lugs or trip unit.


Product Identification
  • UPC: 785901521785
  • GTIN: 00785901521785