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Square D QOB120GFI - GFCI Breaker 20A 1-Pole (10kA AIC)

Square D
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Square D QOB120GFI is a single-pole, bolt-on molded case circuit breaker designed to provide Class A ground fault protection (5mA trip) and thermal-magnetic overcurrent protection for 120/240VAC branch circuits. It features a 20A current rating and a 10kA interrupting capacity at 120V, housed within a compact 100A/QO frame measuring 105 mm H x 19 mm W x 74 mm D and weighing 0.52 lb. The breaker is constructed for bolt-on connection to QO load centers and NQ panelboards, utilizing a pressure plate terminal suitable for copper or aluminum conductors from 14 to 8 AWG, and operates reliably across a temperature range of -25°C to 70°C. It complies with CSA and UL standards, ensuring safe integration into residential and light commercial electrical systems for personnel protection against ground faults.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, Ground Fault Circuit Interrupter (Class A - 5mA), Thermal Magnetic Protection
  • Voltage Rating: 120/240VAC
  • Current Rating: 20A
  • Dimensions: 4.1 in (105 mm) H x 0.7 in (19 mm) W x 2.9 in (74 mm) D
  • Weight: 0.52 lb
  • Standards: CSA, UL Listed
  • Applications: Branch circuit protection in QO Load Centers and NQ Panelboards
  • Switch Type: Circuit Breaker
  • Configuration: Bolt-On
  • Temp Rating: -25°C to 70°C (-13°F to 158°F)
  • Phase: 1
  • AIC rating: 10kA@120V
  • Connection: Bolt-On
  • Poles: 1
  • Protection: Thermal Magnetic, Ground Fault
  • Functions: LI - Long-Time and Instantaneous
  • Frame Size: 100A/QO
  • Panel Type: QO Load Centers and NQ Panelboards
  • Breaker Type: Ground Fault Circuit Interrupter (Class A - 5mA)
  • MCM Size: Min. Wire Size 14 AWG, Max. Wire Size 8 AWG
  • Terminal Connection: Pressure Plate
  • Wire Size: AWG 14 to AWG 8, Copper or Aluminum
  • Certification: UL Listed
  • Family: QOB Series
  • Country of Origin: Mexico


Product Identification
  • UPC: 78590136871
  • GTIN: 00785901368717