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Square D FA321001021 - Molded Case Breaker 100A 240V 3-Pole

Square D
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The Square D FA321001021 is a 3-pole molded case circuit breaker from Schneider Electric's I-Line family, designed for thermal magnetic overcurrent protection in industrial power distribution systems. It is rated for 240V AC, 100A continuous current, with a 10kA interrupting capacity at 240V, and operates on a 3-phase system using LI (Long-Time and Instantaneous) trip functions. This unit measures 6.4 inches in height, 4.5 inches in width, and 4.13 inches in depth, weighing 9 lb, and features an I-Line style plug-in connection for direct mounting on compatible busbars. Manufactured in Mexico, it complies with UL and NEMA standards for molded case circuit breakers, ensuring reliable performance in panelboards, switchboards, and motor control centers. Typical applications include branch circuit protection, feeder protection, and equipment disconnecting means in commercial and industrial facilities.

Key Features & Specifications
  • Type: FA Molded Case Circuit Breaker, Thermal Magnetic, I-Line Plug-In
  • Voltage Rating: 240V AC
  • Current Rating: 100A
  • Poles: 3
  • Phase: 3
  • AIC Rating: 10kA@240V
  • Connection: I-Line Style Plug-In
  • Protection: Thermal Magnetic
  • Functions: LI - Long-Time and Instantaneous
  • Dimensions: 6.4 in (162.6 mm) x 4.5 in (114.3 mm) x 4.13 in (104.90 mm) (Height x Width x Depth)
  • Weight: 9 lb
  • Family: I-Line
  • Item Subcategory: Molded Case
  • Country of Origin: Mexico
  • Manufacturer: Schneider Electric


Product Identification
  • UPC: Not specified
  • GTIN: Not specified