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Square D QJA32090 - 90A 3-Pole Molded Case Circuit Breaker

Square D
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Square D QJA32090 is a molded case circuit breaker designed for providing reliable overcurrent and short-circuit protection in three-phase industrial power distribution systems. It features a 90A current rating and a 240V AC voltage rating, housed within a compact Q Frame measuring 164.34 mm H x 114.3 mm W x 99.82 mm D and weighing 6.647 lb. The breaker is constructed for thermal-magnetic protection with long-time and instantaneous trip functions, ensuring compliance with UL, CSA, NEMA, and NOM-003-SCFI-2000 standards. Its I-Line style plug-in connection facilitates installation in panelboards, making it suitable for protecting feeders and branch circuits in commercial and industrial facilities.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, Thermal-Magnetic Protection, I-Line Plug-In
  • Voltage Rating: 240V AC
  • Current Rating: 90A
  • Dimensions: 6.47 in H (164.34 mm) x 4.5 in W (114.3 mm) x 3.93 in D (99.82 mm)
  • Weight: 6.647 lb
  • Standards: UL, CSA, NEMA, NOM-003-SCFI-2000
  • Applications: Industrial Power Distribution, Feeder & Branch Circuit Protection
  • Switch Type: Circuit Breaker
  • Configuration: Fixed
  • Phase: 3
  • Poles: 3
  • Connection: I-Line Style Plug-In
  • Protection: Thermal Magnetic
  • Functions: Long Time and Instantaneous Trip
  • Frame Size: Q Frame
  • AIC rating: 100kA @ 240V
  • Temp Rating: -25 to 70 °C (-13 to 158 °F)
  • Wire Size: AWG 4 to 300 KCMil, Aluminum/Copper
  • Certification: UL, CSA, NOM
  • Family: I-Line
  • Item Subcategory: Molded Case
  • Country of Origin: Mexico


Product Identification
  • Manufacturer Part Number: QJA32090
  • Brand: Square D