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Square D FDA140451 - Molded Case Breaker 45A 1P (277V, 18kA)

Square D
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Square D FDA140451 is a molded case circuit breaker designed for providing reliable overcurrent protection in industrial and commercial electrical systems. It features a 45A current rating and a 277V AC voltage rating, housed in a compact, single-pole I-Line style plug-in configuration for straightforward panel integration. The breaker utilizes a thermal-magnetic trip mechanism offering both long-time and instantaneous (LI) protection functions and is rated for an interrupting capacity of 18kA at 480V AC. Its construction complies with relevant industry standards for safety and performance, making it suitable for protecting feeders, branch circuits, and equipment in a wide range of applications.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, Thermal-Magnetic Protection, I-Line Style Plug-In
  • Voltage Rating: 277V AC
  • Current Rating: 45A
  • Poles: 1
  • Phase: 1
  • AIC Rating: 18kA @ 480V AC
  • Protection Functions: LI (Long-Time and Instantaneous)
  • Connection: I-Line Style Plug-In
  • Family: Powerpact
  • Type Designation: FDA
  • Item Subcategory: Molded Case
  • Weight: 1 lb


Product Identification
  • UPC: 785901960914