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Square D QOU120 - Molded Case Circuit Breaker 20A 1-Pole

Square D
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Square D QOU120 is a molded case circuit breaker designed for providing reliable overcurrent protection in single-phase electrical systems. It features a 20A current rating and a 120/240V voltage rating, housed within a compact unit measuring 102.87 mm H x 19.05 mm W x 74.93 mm D and weighing 0.37 lb. The breaker utilizes a thermal-magnetic trip mechanism for both long-time and instantaneous (LI) protection, is constructed with a 100A frame, and operates reliably within a temperature range of -25 to 70 °C. It complies with key industry standards including CSA, IEC, and UL, and is commonly applied in panels for air conditioning, refrigeration equipment, and heating systems.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, Standard, Thermal-Magnetic Protection
  • Voltage Rating: 120/240V AC
  • Current Rating: 20A
  • Dimensions: 4.05 in (102.87 mm) H x 0.75 in (19.05 mm) W x 2.95 in (74.93 mm) D
  • Weight: 0.37 lb
  • Standards: CSA, IEC, UL Listed
  • Applications: Air Conditioning, Refrigeration Equipment, Heating Panels
  • Switch Type: Circuit Breaker
  • Configuration: Unit Mount
  • Temp Rating: -25 to 70 °C (-13 to 158 °F)
  • Phase: 1
  • AIC Rating: 10kA @ 120V
  • Connection: Slotted Box Lug (Reversible Line and Load)
  • Poles: 1
  • Protection: Thermal Magnetic
  • Functions: Long-Time and Instantaneous (LI)
  • Frame Size: 100A/QOU
  • Breaker Type: Standard
  • Wire Size: AWG 14 to AWG 2 (Aluminium/Copper)
  • Certification: IEC, UL Listed
  • Family: QOU Series
  • Country of Origin: Mexico


Product Identification
  • UPC: 785901418535
  • GTIN: 00785901418535