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Square D PTMA36250GN - Breaker Type Bus Plug 250A 600V

Square D
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Square D PTMA36250GN is a breaker type bus plug designed for primary overcurrent protection in three-phase, four-wire busway systems. It is rated for 250 Amps at 600 Volts AC with a high interrupting capacity of 65kA at 480V, ensuring robust fault current handling. The unit features a bolt-on mounting design for secure installation on I-Line bus duct systems, weighs 225 lb, and utilizes a thermal magnetic trip unit for reliable circuit interruption. This bus plug complies with industry standards for industrial and commercial power distribution, offering integrated protection in demanding environments. It is typically applied as a busway switch in manufacturing facilities, data centers, and large commercial buildings.

Key Features & Specifications
  • Manufacturer: Square D
  • Type: PTMA
  • Family: I-Line
  • Current Rating: 250 Amps
  • Voltage Rating: 600V AC
  • Phase: 3
  • Wire: 4
  • Poles: 3P4W (Three Phase, Four Wire)
  • AIC Rating: 65kA@480V
  • Interrupt Rating: 18kA @ 480V
  • Mounting Type: Bolt-On
  • Weight: 225 lb
  • Trip Unit: Thermal Magnetic
  • Application: Busway Switch
  • Ground: Yes