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Square D PTMA36300GNH - 300A 600V Bus Plug (65kA AIC)

Square D
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Square D PTMA36300GNH Bus Plug is a 300A, 600VAC, three-phase circuit breaker type unit designed for primary protection and disconnection in industrial power distribution systems. It features a robust I-Line family design with a 65kA interrupting capacity at 480VAC, utilizing a 4-wire configuration and weighing 225 lb. The unit is constructed with a heavy-duty metal enclosure suitable for demanding environments, and it complies with UL and NEMA standards for safe and reliable operation. This bus plug is typically employed in manufacturing facilities, data centers, and commercial buildings to protect branch circuits and equipment from overloads and short circuits.

Key Features & Specifications
  • Type: Circuit breaker type bus plug, I-Line family, metal enclosure
  • Voltage Rating: 600V AC
  • Current Rating: 300A
  • AIC Rating: 65kA@480V
  • Phase: 3
  • Wire: 4
  • Weight: 225 lb
  • Standards: UL, NEMA
  • Applications: Industrial power distribution, branch circuit protection, equipment disconnection


Product Identification
  • Manufacturer: Square D
  • Model: PTMA36300GNH
  • Type: PTMA
  • Family: I-Line
  • Item Subcategory: Breaker Type