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Square D PQ4603J - Fusible Class J 30A (600V)

Square D
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Square D PQ4603J is a fusible bus plug designed for overcurrent protection in 3-phase, 4-wire busway distribution systems. It is rated for 30 amperes at 600 volts maximum, with an interrupting capacity of 200kA at 480V. This I-Line series plug weighs 30 lb and accepts Class J fuses, with a 4-wire configuration for use with both aluminum and copper busway systems. The unit complies with UL standards for fusible switching and protection in industrial power distribution. Typical applications include manufacturing facilities, data centers, and commercial buildings requiring reliable branch circuit protection.

Key Features & Specifications
  • Manufacturer: Square D
  • Item Subcategory: Fusible
  • Family: I-Line
  • Type: PQ
  • Weight: 30 lb
  • Fuse Class: J
  • Wire: 4
  • Voltage Rating: 600V
  • AIC rating: 200kA@480V
  • Phase: 3
  • Current Rating: 30A
  • Compatible Busway: I-Line I and I-Line II
  • Busway Material: Aluminum and Copper