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Square D LHF36300V - Molded Case 300A 600V 3-Pole

Square D
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Square D LHF36300V is a 3-pole molded case circuit breaker from the LHF Series, designed for overcurrent protection in industrial and commercial power distribution systems. It is rated for 600V AC and 300A, with a thermal magnetic protection mechanism providing LI (Long-Time and Instantaneous) functions, and a 35kA interrupting rating at 480V for high fault current environments. The breaker features a bolt-on connection, an L-frame construction, and measures 12.5 inches in height, 6 inches in width, and 4 inches in depth, weighing 20 lb. It complies with UL, CSA, IEC, and RoHS/REACH standards, and includes a manual trip capability without exposure to live parts. This unit is suited for demanding applications requiring reliable circuit control and safety, though it does not include lugs.

Key Features & Specifications
  • Type: LHF
  • Current Rating: 300A
  • Voltage Rating: 600V
  • Poles: 3
  • Phase: 3
  • Protection: Thermal Magnetic
  • Functions: LI - Long-Time and Instantaneous
  • Frame Size: L Frame
  • AIC rating: 35kA@480V
  • Connection: Bolt-On
  • Dimensions: Depth 4 in (101.60 mm) Width 6 in (152.40 mm) Height 12.5 in (317.50 mm)
  • Weight: 20 lb
  • Terminal wire size: 1 AWG to 600 KCMIL Aluminum
  • Manual trip capability without exposure to live parts
  • UL Listed, CSA Certified
  • Complies with IEC standards
  • RoHS/REACH compliant