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Square D PTQ3680GH - Class L 800A 600V Bus Plug

Square D
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The Square D PTQ3680GH is a fusible bus plug from the I-Line family, designed for overcurrent protection and power distribution in industrial electrical systems. This unit is rated for 600V AC, 800A continuous current, and 3-phase operation, with a high interrupting capacity of 200kA at 480V AC. It features Class L fuses, a 3-wire configuration, and accommodates wire sizes from AWG 6 to 300 kcmil for ground and AWG 3/0 to 500 kcmil for phase and neutral, housed in a robust enclosure measuring 21.3 in (540 mm) high, 45.2 in (1148 mm) wide, and 23.6 in (599 mm) deep, weighing 390 lb. The bus plug is UL and CSA certified, meeting stringent safety and performance standards for industrial environments. Typical applications include main power distribution, feeder circuits, and heavy-load protection in manufacturing plants, data centers, and commercial facilities.

Key Features & Specifications
  • Type: Fusible bus plug, I-Line family, Class L fuse
  • Voltage Rating: 600V AC
  • Current Rating: 800A
  • Dimensions: 21.3 in (540 mm) x 45.2 in (1148 mm) x 23.6 in (599 mm) (Height x Width x Depth)
  • Weight: 390 lb
  • Standards: UL, CSA
  • Applications: Main power distribution, feeder circuits, heavy-load protection
  • Fuse Class: L
  • Wire: 3
  • Wire Size: AWG 6...300 kcmil 4 ground; AWG 3/0...500 kcmil 4 phase and neutral
  • AIC rating: 200kA@480V
  • Phase: 3
  • Certification: UL - CSA


Product Identification
  • GTIN: 00785901087472