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Square D PFI36040 - 40A 3-Phase I-Line Bus Plug (600V)

Square D
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Square D PFI36040 is a 40A, 3-phase I-Line circuit breaker type bus plug designed for primary overcurrent protection in industrial power distribution systems. It operates at 600V with a 100kA interrupting capacity at 600V, utilizing a 3-wire configuration for reliable fault isolation. The unit weighs 38 lb and is constructed with a metal enclosure compatible with FIP frames for seamless integration into Square D I-Line panelboards. This bus plug complies with applicable UL and NEMA standards for industrial electrical safety and performance. Typical applications include branch circuit protection in manufacturing facilities, commercial buildings, and heavy machinery power distribution.

Key Features & Specifications
  • Type: PFI I-Line circuit breaker type bus plug
  • Voltage Rating: 600V AC
  • Current Rating: 40A
  • AIC Rating: 100kA@600V
  • Phase: 3
  • Wire: 3
  • Weight: 38 lb
  • Compatible Frames: FIP
  • Family: I-Line
  • Item Subcategory: Breaker Type


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