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Square D THQB2120GFI - GFCI Breaker 20A 2-Pole 120/240VAC

United Fuses
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Square D THQB2120GFI is a 2-pole, 120/240VAC ground fault circuit interrupter (GFCI) breaker designed to protect personnel and equipment from ground faults in residential and light commercial applications. It is rated for 20 amps of current and features a 10 kAIC interrupting capacity, ensuring reliable fault interruption. The breaker weighs 5.19 lb and is constructed with a compact frame for easy installation in Square D QO load centers. It complies with UL 943 and UL 489 standards for ground fault and branch circuit protection. This breaker is commonly used in wet or damp locations such as bathrooms, kitchens, and outdoor panels to prevent electrical shock hazards.

Key Features & Specifications
  • Type: Ground Fault Circuit Interrupter (GFCI) Breaker
  • Voltage Rating: 120/240V AC
  • Current Rating: 20 Amps
  • Dimensions: Compact frame size
  • Standards: UL 943, UL 489
  • Applications: Wet/damp locations, residential, light commercial
  • Weight: 5.19 lb
  • Poles: 2
  • Breaker Type: THQB
  • Frame Size: QO
  • Trip Type: Thermal-magnetic with GFCI
  • Connection: Plug-on
  • Frequency Rating: 60 Hz
  • Phase: 1
  • AIC Rating: 10 kAIC
  • Installation Type: Plug-in
  • Circuit Breaker Mounting Style: Plug-on
  • Terminal Connection: Lug
  • Wire Size: #14-8 AWG
  • Certification: UL Listed


Product Identification
  • UPC: 785901893123
  • GTIN: 00785901893123