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Square D PTMH36450GNH - Breaker Bus Plug 450A 600V

Square D
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Square Electric PTMH36450GNH is a breaker-type bus plug designed for primary circuit protection in industrial power distribution systems. This 3-phase, 4-wire unit operates at 600V AC with a 450A current rating and provides a 65kA interrupting capacity at 480V. The plug-in unit features an M-frame breaker with a compact, totally enclosed construction, a durable polyester powder coat finish, and plated contacts for low resistance, supporting conductor ranges from AWG 3/0 to 500 kcmil for phase and neutral and AWG 6 to 300 kcmil for ground. It complies with industry standards for safe and reliable electrical distribution in demanding environments. Typical applications include power distribution in commercial and industrial facilities using busway I-Line systems.

Key Features & Specifications
  • Manufacturer: Schneider Electric
  • Item Subcategory: Breaker Type
  • Family: I-Line
  • Type: PTMH
  • Weight: 225 lb
  • Wire: 4
  • Voltage Rating: 600V
  • AIC rating: 65kA@480V
  • Phase: 3
  • Current Rating: 450A
  • Amperage: 450A
  • Voltage: 600V AC
  • Phases: 3-phase
  • Wires: 4-wire (including integral ground bus)
  • Frame: M-frame
  • Interrupt Rating: 25kA at 600V
  • Mounting Type: Plug-in unit for busway I-Line system
  • Conductor Range: AWG 3/0 to 500 kcmil (phase/neutral), AWG 6 to 300 kcmil (ground)
  • Finish: Polyester powder coat