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Square D QOU3401021 - Molded Case Circuit Breaker 40A 240V 3-Pole

Square D
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Square D QOU3401021 is a 3-pole molded case circuit breaker from Schneider Electric designed for overcurrent protection in industrial and commercial power distribution systems. It is rated for 40 amps at 240 volts, with a 10kA interrupting capacity at 240V, and provides long-time and instantaneous trip functions via a thermal magnetic trip mechanism. The unit measures 4.05 in (102.87 mm) x 3 in (76.2 mm) x 2.95 in (74.93 mm) and weighs 1.56 lb, featuring a bolt-on connection and supporting wire sizes from AWG 14 to AWG 2 for both aluminum and copper conductors. It operates within a temperature range of -13 to 158 °F (-25 to 70 °C) and is manufactured in Mexico. This breaker is suitable for 3-phase applications requiring reliable circuit protection in panelboards and load centers.

Key Features & Specifications
  • Type: Molded Case
  • Current Rating: 40A
  • Voltage Rating: 240V
  • Poles: 3
  • Interrupt Rating: 10kA at 240V
  • Protection: Thermal Magnetic
  • Functions: Long-Time and Instantaneous Trip
  • Connection: Bolt-On
  • Wire Size: AWG 14...AWG 2 aluminium/copper
  • Phase: 3
  • Temp Rating: -13–158 °F (-25–70 °C)
  • Dimensions: 4.05 in (102.87 mm) x 3 in (76.2 mm) x 2.95 in (74.93 mm) (Height x Width x Depth)
  • Weight: 1.56 lb
  • Country of Origin: Mexico


Product Identification
  • UPC: 078590151862
  • GTIN: 00785901518624