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Square D QO120DFC - Dual Function Circuit Breaker 20A 120V

Square D
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Square D QO120DFC is a 20-ampere, single-pole, 120-volt AC miniature circuit breaker from Schneider Electric's QO series, designed to deliver dual arc fault and ground fault protection in a single unit. This plug-in breaker provides 10kA interrupting capacity at 120VAC and accepts minimum 14 AWG copper or aluminum wire, with a compact footprint that facilitates faster installation and includes time-saving diagnostics. The unit measures 4.8 in (121 mm) in height, 0.7 in (19 mm) in width, and 2.9 in (74 mm) in depth, weighing 0.594 lb, and is constructed for residential applications. It is UL Listed and ANSI certified, meeting national safety standards for electrical protection. Typical applications include branch circuit protection in residential load centers where both arc fault and ground fault protection are required.

Key Features & Specifications
  • Manufacturer: Schneider Electric
  • Amperage: 20A
  • Voltage: 120VAC
  • Poles: 1
  • Series: QO
  • Mounting: Plug-in
  • Interrupt Rating: 10kA at 120VAC
  • Protection Type: Dual Function (CAFCI and GFCI Class A)
  • Wire Size: 14 AWG (Cu/Al) minimum
  • Dimensions: 4.8 in (121 mm) x 0.7 in (19 mm) x 2.9 in (74 mm) (Height x Width x Depth)
  • Weight: 0.594 lb
  • Country of Origin: Mexico
  • Certifications: UL Listed, ANSI Certified


Product Identification
  • UPC: 78590140168
  • GTIN: 00785901401681