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Square D PFI34040 - Breaker Bus Plug 40A 480V 3-Pole

Square D
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Square D PFI34040 is a 40A, 480V, 3-pole breaker type bus plug designed for overcurrent protection and power distribution in industrial and commercial busway systems. It operates on a 3-phase, 3-wire system with a 200kA interrupting capacity at 480V for robust fault handling. The unit weighs 38 lb, features a thermal magnetic trip unit, and is constructed as a molded case circuit breaker within the I-Line family for integration with compatible FIP frames. This bus plug meets industry standards for reliable circuit protection in demanding environments. It is typically used in manufacturing facilities, data centers, and commercial buildings requiring efficient power distribution from busway systems.

Key Features & Specifications
  • Type: Breaker Type Bus Plug
  • Manufacturer: Square D
  • Family: I-Line
  • Type: PFI
  • Current Rating: 40A
  • Voltage Rating: 480V
  • Phase: 3
  • Wire Configuration: 3 Phase 3 Wire
  • Poles: 3
  • AIC Rating: 200kA@480V
  • Interrupt Rating: 18kAIC @ 480V
  • Weight: 38 lb
  • Compatible Frames: FIP
  • Mounting Type: Bus Plug
  • Trip Unit: Thermal Magnetic


Part Number: PFI34040