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Square D QOU320 - 3-Pole Circuit Breaker 20A 240V

Square D
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Square D QOU320 is a molded case circuit breaker designed for providing reliable overcurrent and short-circuit protection in three-phase industrial electrical systems. It features a 20A current rating and a 240V AC voltage rating, housed within a compact 100A frame with dimensions of 102.87 mm H x 57.15 mm W x 74.93 mm D and a weight of 1.101 lb. The breaker is constructed with a thermal-magnetic trip unit for long-time and instantaneous protection, utilizes a bolt-on connection with reversible slotted box lug terminals, and complies with CSA, IEC, and UL standards. It is typically applied in panels for air conditioning, refrigeration equipment, and heating systems, offering a 10kA interrupting capacity at 240V and accepting wire sizes from 14 AWG to 2 AWG for aluminum or copper conductors.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, Standard, Thermal-Magnetic Protection
  • Voltage Rating: 240V AC
  • Current Rating: 20A
  • Dimensions: 102.87 mm H x 57.15 mm W x 74.93 mm D (4.05 in x 2.25 in x 2.95 in)
  • Standards: CSA, IEC, UL Listed
  • Applications: Air Conditioning, Refrigeration Equipment, Heating Panels
  • Switch Type: Circuit Breaker
  • Configuration: Bolt-On
  • Phase: 3
  • Poles: 3
  • Connection: Bolt-On
  • Protection: Thermal Magnetic
  • Functions: Long Time and Instantaneous Trip
  • Frame Size: 100A/QOU
  • Breaker Type: Standard
  • AIC rating: 10kA@240V
  • Terminal Connection: Slotted Box Lug (Reversible Line and Load)
  • Wire Size: AWG 14 to AWG 2 (Aluminium/Copper)
  • MCM Size: Min. Wire Size 14 AWG, Max. Wire Size 2 AWG
  • Certification: IEC, UL listed
  • Weight: 1.101 lb


Product Identification
  • UPC: 785901418894
  • GTIN: 00785901418894