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Square D QOB125GFI - GFCI Breaker 25A 1-Pole (10kA AIC)

Square D
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Square D QOB125GFI is a molded case circuit breaker designed for providing ground fault protection in residential and light commercial electrical systems. It operates as a 25A, single-pole, Class A Ground Fault Circuit Interrupter (GFCI) with a 5mA trip threshold, rated for 120/240VAC systems and featuring a 10kA interrupting capacity at 120V. The breaker is constructed with a compact, bolt-on design measuring 105 mm H x 19 mm W x 74 mm D and utilizes a thermal-magnetic trip mechanism for combined overload and short-circuit protection. It is certified to UL and CSA standards for safety and compatibility, and is engineered for installation in QO load centers and NQ panelboards. Typical applications include protecting branch circuits in environments where enhanced personnel protection from ground faults is required, such as kitchens, bathrooms, and outdoor outlets.

Key Features & Specifications
  • Type: Molded Case, Ground Fault Circuit Interrupter (Class A - 5mA), Thermal Magnetic Protection
  • Voltage Rating: 120/240VAC
  • Current Rating: 25A
  • Dimensions: 105 mm H x 19 mm W x 74 mm D (4.1 in x 0.7 in x 2.9 in)
  • Weight: 0.563 lb
  • Standards: UL Listed, CSA
  • Applications: Branch circuit protection in QO Load Centers and NQ Panelboards
  • Phase: 1
  • Poles: 1
  • AIC Rating: 10kA @ 120V
  • Connection: Bolt-On
  • Terminal Connection: Pressure Plate
  • Frame Size: 100A/QO
  • Wire Size: AWG 14 to AWG 8, Copper/Aluminum
  • MCM Size: Min. 14 AWG, Max. 8 AWG
  • Temp Rating: -25°C to 70°C (-13°F to 158°F)
  • Functions: Long Time and Instantaneous Trip
  • Protection: Thermal Magnetic
  • Panel Type: QO Load Centers and NQ Panelboards
  • Breaker Type: Ground Fault Circuit Interrupter
  • Certification: UL Listed


Product Identification
  • UPC: 785901368724
  • GTIN: 00785901368724