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Square D PTMH36300GCLH - 300A 3-Phase Bus Plug (600V/65kA)

Square D
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Square D PTMH36300GCLH is a 300A, 3-pole I-Line circuit breaker type bus plug designed for primary overcurrent protection in industrial power distribution systems. It is rated for 600V AC with a 65kA interrupting capacity at 480V, providing robust fault current protection. The unit weighs 225 lb and features a 3-wire configuration, housed in a durable metal enclosure for reliable performance in demanding environments. This bus plug complies with applicable industry standards for electrical safety and is suitable for use in Square D I-Line panelboards and switchboards. Typical applications include protecting branch circuits in manufacturing facilities, commercial buildings, and heavy industrial settings where high fault currents are present.

Key Features & Specifications
  • Type: Circuit breaker type bus plug, 3-pole, 3-wire, metal enclosure
  • Voltage Rating: 600V AC
  • Current Rating: 300A
  • AIC Rating: 65kA at 480V
  • Phase: 3
  • Wire: 3
  • Weight: 225 lb
  • Family: I-Line
  • Item Subcategory: Breaker Type


Product Identification
  • Manufacturer: Square D
  • Model: PTMH36300GCLH
  • Type: PTMH