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Square D QOU3401200 - Molded Case Breaker 40A 3-Pole

Square D
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Square Electric QOU3401200 is a 3-pole molded case circuit breaker from the QOU series designed for overcurrent protection in branch circuits. It is rated at 40A with a voltage rating of 120/240VAC and 48VDC, providing long time and instantaneous trip functions through thermal magnetic protection. The unit measures 4.05 in (102.87 mm) in height, 3 in (76.2 mm) in width, and 2.95 in (74.93 mm) in depth, weighing 1.56 lb, and features a feed-thru connection with slotted box lugs for wire sizes from AWG 14 to AWG 2 aluminum or copper. This breaker complies with RoHS, REACh, and HACR standards, and is certified under IEC, UL, and CSA for safety and performance. It is suitable for industrial applications such as HVAC systems and panel mounting in commercial environments.

Key Features & Specifications
  • Type: QOU
  • Current Rating: 40A
  • Voltage Rating: 120/240VAC, 48VDC
  • Poles: 3
  • Phase: 3
  • Interrupt Rating: 10kAIC at 120V
  • Protection: Thermal Magnetic
  • Trip Functions: Long Time and Instantaneous Trip
  • Connection: Feed-Thru
  • Wire Size: AWG 14 to AWG 2 aluminum/copper
  • Mounting Type: Panel Mount
  • 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
  • Standards: RoHS, REACh, HACR
  • Certifications: IEC, UL, CSA
  • Compatible Frames: QOU
  • Country of Origin: Mexico