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Square D QOU340 - 3-Pole 40A Circuit Breaker (240V, 10kA AIC)

Square D
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Square D QOU340 is a molded case circuit breaker designed for providing reliable overcurrent and short-circuit protection in three-phase electrical systems. It features a 40A current rating and a 240V AC voltage rating, housed within a compact, unit-mount frame measuring 102.87 mm H x 57.15 mm W x 74.93 mm D and weighing 1.13 lb. This thermal-magnetic breaker is CSA, IEC, and UL listed, ensuring compliance with key industry standards for safety and performance. Its typical applications include protecting air conditioning, refrigeration equipment, and heating systems.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, Thermal-Magnetic Protection with Long Time and Instantaneous Trip Functions
  • Voltage Rating: 240V AC
  • Current Rating: 40A
  • Frame Size: 100A/QOU
  • Poles: 3
  • Phase: 3
  • AIC Rating: 10kA @ 240V
  • Connection: Unit Mount with Slotted Box Lug Terminals (Reversible Line and Load)
  • Wire Size: 14 AWG to 2 AWG (Aluminium/Copper)
  • Standards & Certification: CSA, IEC, UL Listed
  • Dimensions: 4.05 in (102.87 mm) H x 2.25 in (57.15 mm) W x 2.95 in (74.93 mm) D
  • Weight: 1.13 lb
  • Breaker Type: Standard
  • Country of Origin: Mexico


Product Identification
  • UPC: 785901418955
  • GTIN: 00785901418955