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Square D FY14040C - Molded Case 40A 277V 1-Pole

Square D
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Square D FY14040C is a 1-pole molded case circuit breaker designed for overcurrent protection in commercial and industrial power distribution systems. It is rated for 40A at 277V and provides LI (Long-Time and Instantaneous) protection via a thermal-magnetic trip unit. This unit features an I-Line style plug-in connection, weighs 2 lb, and is part of the I-Line family with a 100A frame. It carries a 14kA interrupting rating at 240V and is UL listed and CSA certified for safety compliance. Typical applications include lighting panels, motor control centers, and branch circuit protection in industrial environments.

Key Features & Specifications
  • Manufacturer: Square D
  • Item Subcategory: Molded Case
  • Family: I-Line
  • Type: FY
  • Weight: 2 lb
  • Functions: LI - Long-Time and Instantaneous
  • Voltage Rating: 277V
  • Poles: 1
  • Connection: I-Line Style Plug-In
  • Protection: Thermal Magnetic
  • AIC rating: 14kA@240V
  • Phase: 1
  • Current Rating: 40A
  • Interrupt Rating: 18kA @ 277V
  • Series/Frame: FY Series
  • Frame Amps: 100A
  • Trip Unit: Thermal-Magnetic
  • Certifications: UL Listed, CSA Certified
  • Part Number: FY14040C