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Square D FC340401212 - Molded Case Breaker 40A 480V 3-Pole

Square D
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Square D FC340401212 is a 3-pole molded case circuit breaker from the I-Line family, designed for thermal-magnetic protection with long-time and instantaneous (LI) functions. It is rated for 480V AC, 40A continuous current, and an interrupting capacity of 65kA at 480V, with a three-phase configuration. The unit weighs 6 lb and features an I-Line style plug-in connection for secure mounting in compatible panelboards. This breaker complies with industry standards for overcurrent protection in commercial and industrial power distribution systems. It is typically applied in branch circuit protection for motor control centers, lighting panels, and switchboards requiring reliable short-circuit and overload interruption.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, Thermal Magnetic, LI (Long-Time and Instantaneous)
  • Voltage Rating: 480V AC
  • Current Rating: 40A
  • Poles: 3
  • Phase: 3
  • AIC Rating: 65kA@480V
  • Connection: I-Line Style Plug-In
  • Family: I-Line
  • Weight: 6 lb
  • Functions: LI - Long-Time and Instantaneous
  • Item Subcategory: Molded Case