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Square D LHF3640030DC - Molded Case 400A 600V 3-Pole

Square D
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Square D LHF3640030DC is a molded case circuit breaker designed for overload and short-circuit protection in industrial power distribution systems. This 3-pole, 400-amp rated breaker operates at 600V and utilizes thermal-magnetic trip technology with LI (Long-Time and Instantaneous) functions for dependable performance. The unit features a bolt-on connection, an L Frame size, and measures 12.5 inches in height, 6 inches in width, and 4 inches in depth, weighing 20 lb. It complies with UL 489 and CSA standards, with an AIC rating of 20kA at 500VDC. This breaker is suited for three-phase applications in commercial and industrial electrical systems.

Key Features & Specifications
  • Type: LHF
  • Manufacturer: Square D
  • Item Subcategory: Molded Case
  • Family: LHF Series
  • Functions: LI - Long-Time and Instantaneous
  • Frame Size: L Frame
  • Voltage Rating: 600V
  • Poles: 3
  • Connection: Bolt-On
  • Protection: Thermal Magnetic
  • AIC rating: 20kA@500VDC
  • Phase: 3
  • Current Rating: 400A
  • Dimensions: Depth 4 in (101.60 mm) Width 6 in (152.40 mm) Height 12.5 in (317.50 mm)
  • Weight: 20 lb
  • Standards: UL 489, CSA


Part Number: LHF3640030DC