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Square D LA36400MT - 400A Molded Case Breaker (600V, 3-Pole)

Square D
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The Square D LA36400MT is a 3-pole molded case circuit breaker designed to provide reliable overcurrent and short-circuit protection for three-phase industrial power distribution systems. It features a 400A current rating and a 600V AC voltage rating, with a compact L-frame construction measuring 279.4 mm H x 152.4 mm W x 148.34 mm D and a weight of 18.34 lb. This thermal-magnetic breaker, compliant with relevant industry standards, utilizes a long-time and instantaneous (LI) trip function and offers a 30kA interrupting capacity at 480V AC for robust fault protection. Its I-Line style plug-in connection facilitates efficient installation in compatible panelboards for applications such as feeder and branch circuit protection in commercial and industrial facilities.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, Thermal-Magnetic Protection, I-Line Plug-In
  • Voltage Rating: 600V AC
  • Current Rating: 400A
  • Frame Size: L Frame
  • Poles: 3
  • Phase: 3-Phase
  • AIC Rating: 30kA @ 480V AC
  • Trip Functions: LI (Long-Time and Instantaneous)
  • Connection: I-Line Style Plug-In
  • Dimensions: 11 in (279.4 mm) H x 6 in (152.4 mm) W x 5.84 in (148.34 mm) D
  • Weight: 18.34 lb
  • Family: I-Line
  • Country of Origin: Mexico


Product Identification
  • UPC: 078590133930
  • GTIN: 00785901339304