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Square D PKI34125 - Breaker Type Bus Plug 125A (480V, 3-Phase)

Square D
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Square D PKI34125 is a 125A breaker type bus plug designed for circuit protection within Square D I-Line busway systems. This 3-phase, 3-wire unit operates at 480V and provides a high interrupting capacity of 200kA at 480V for robust fault current protection. The plug-in design features a molded case construction with thermal magnetic trip protection, weighing 45 lb and compatible with KIP frames for reliable installation. It is engineered for use with both aluminum and copper I-Line busway configurations, meeting industrial standards for durability. Typical applications include power distribution and circuit protection in industrial and commercial facilities.

Key Features & Specifications
  • Type: Breaker Type
  • Family: I-Line
  • Current Rating: 125A
  • Voltage Rating: 480V
  • Phase: 3
  • Wire: 3
  • AIC Rating: 200kA@480V
  • Compatible Frames: KIP
  • Weight: 45 lb
  • Mounting Type: Plug-in
  • Frame: KI
  • Trip Unit: Thermal Magnetic
  • Application: Busway Circuit Protection


Part Number: PKI34125