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Square D PBQ4640GRA - Fusible 400A Bus Plug (600V, 200kA)

Square D
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Square D PBQ4640GRA Bus Plug is a fusible I-Line unit designed for branch circuit protection in industrial power distribution systems. It operates at a voltage rating of 600V with a current rating of 400A and a 200kA interrupting capacity at 480V, supporting three-phase configurations. The unit weighs 175 lb and accommodates wire size 4, utilizing H, K, or R fuse classes for versatile overcurrent protection. It complies with applicable NEMA and UL standards for safety and reliability. Typical applications include main or feeder disconnect in manufacturing plants, data centers, and commercial facilities requiring high-fault current handling.

Key Features & Specifications
  • Type: Fusible bus plug, I-Line family, PBQ series
  • Voltage Rating: 600V AC
  • Current Rating: 400A
  • AIC Rating: 200kA@480V
  • Phase: 3
  • Fuse Class: H, K, R
  • Wire: 4
  • Weight: 175 lb


Product Identification
  • UPC: Not specified
  • GTIN: Not specified