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Square D QOB220CAFI - GFCI Breaker 20A 2-Pole (120/240VAC)

Square D
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Square D QOB220CAFI is a 2-pole molded case circuit breaker from the QOB Series, engineered for ground fault protection in residential and commercial electrical systems. This unit operates at 120/240VAC with a 20A current rating and features a bolt-on connection for secure installation in QOB load centers and panelboards. The breaker measures 4.8 in (121 mm) in height, 1.5 in (38 mm) in width, and 2.9 in (74 mm) in depth, weighing 0.95 lb, with a pressure plate terminal connection accommodating copper and aluminum conductors. It complies with CSA and UL standards, holding UL certification, and provides a 10kA interrupting rating at 120V for reliable overcurrent and ground fault interruption. Typical applications include branch circuit protection in industrial and commercial environments requiring GFCI functionality with a 5mA trip sensitivity.

Key Features & Specifications
  • Type: QOB
  • Manufacturer: Square D
  • Item Subcategory: Molded Case
  • Family: QOB Series
  • Country of Origin: Mexico
  • Dimensions: 4.8 in (121 mm) x 1.5 in (38 mm) x 2.9 in (74 mm) (Height x Width x Depth)
  • Weight: 0.95 lb
  • Terminal Connection: Pressure Plate
  • Voltage Rating: 120/240VAC
  • Poles: 2
  • Connection: Bolt-On
  • Standards: CSA, UL Listed
  • Certification: UL Listed
  • AIC rating: 10kA@120V
  • Phase: 1
  • Amperage: 20A
  • Protection Type: GFCI (5mA Trip Sensitivity)
  • Trip Unit: Thermal Magnetic
  • Wire Size: AWG 14-8 Cu, AWG 12-8 Al


Part Number: QOB220CAFI