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Square D QO120HM - 1-Pole Circuit Breaker 20A 120V (10kA AIC)

Square D
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Square D QO120HM is a single-pole, plug-in molded case circuit breaker designed for providing reliable overcurrent protection in residential and light commercial electrical systems. It features a 20A current rating and a 120V AC voltage rating, housed within a compact 76mm x 19mm x 74mm (HxWxD) frame that weighs 0.27 lb. The breaker utilizes a thermal-magnetic trip mechanism with high magnetic instantaneous trip for rapid response to short circuits, offering a 10kA interrupting capacity, and is constructed with pressure plate terminals compatible with 14-8 AWG copper or 12-8 AWG aluminum wire. It is CSA Certified and UL Listed for safety compliance, operating reliably in ambient temperatures from -25°C to 70°C, and is specifically engineered for installation in QO load centers and NQ panelboards.

Key Features & Specifications
  • Type: Single-pole, plug-in, molded case circuit breaker with thermal-magnetic (LI) protection
  • Voltage Rating: 120V AC
  • Current Rating: 20A
  • Dimensions: 76 mm H x 19 mm W x 74 mm D (3.0 in x 0.7 in x 2.9 in)
  • Standards: CSA Certified, UL Listed
  • Applications: Overcurrent protection in QO load centers and NQ panelboards for residential/light commercial use
  • Switch Type: Circuit Breaker
  • Configuration: Plug-In
  • Temp Rating: -25°C to 70°C (-13°F to 158°F)
  • Phase: 1
  • AIC Rating: 10kA @ 120V
  • Connection: Plug-In
  • Poles: 1
  • Protection: Thermal Magnetic
  • Functions: Long-Time and Instantaneous (LI) Trip
  • Frame Size: 100A/QO
  • Trip Type: High Magnetic
  • Panel Type: QO Load Centers and NQ Panelboards
  • Breaker Type: High Magnetic
  • Wire Size: AWG 14 to AWG 8 (Cu), AWG 12 to AWG 8 (Al)
  • Certification: UL Listed
  • Terminal Connection: Pressure plate
  • Family: QO Series
  • Item Subcategory: Molded Case
  • Country of Origin: Mexico


Product Identification
  • UPC: 785901400110
  • GTIN: 00785901400110