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Square D FDA140401 - Molded Case Circuit Breaker 40A 277V

Square D
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Square D FDA140401 is a Schneider Electric molded case circuit breaker from the Powerpact family, designed for overload and short circuit protection in electrical distribution systems. This single-pole unit is rated for 40A at 277V AC and features a thermal magnetic trip mechanism with LI (Long-Time and Instantaneous) functions for precise protection. The breaker weighs 1 lb and utilizes an I-Line style plug-in connection for secure installation in compatible panelboards. It delivers an interrupting capacity of 18kA at 480V AC, meeting rigorous safety standards for industrial environments. Typical applications include branch circuit protection in commercial and light industrial power systems.

Key Features & Specifications
  • Type: Molded Case
  • Family: Powerpact
  • Type: FDA
  • Poles: 1
  • Current Rating: 40A
  • Voltage Rating: 277V
  • Functions: LI - Long-Time and Instantaneous
  • Protection: Thermal Magnetic
  • AIC rating: 18kA@480V
  • Connection: I-Line Style Plug-In
  • Weight: 1 lb
  • Phase: 1