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Square D QOB240GFI - GFCI Breaker 40A 2-Pole 120/240V

Square D
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Square D QOB240GFI is a molded case circuit breaker designed for providing ground fault protection in residential and light commercial electrical systems. This 40A, 2-pole breaker operates at 120/240VAC and features a 10kA interrupting rating at 240V, utilizing a thermal-magnetic trip mechanism with long-time and instantaneous (LI) functions for overload and short-circuit protection. Its compact, bolt-on design measures 105 mm H x 38 mm W x 74 mm D (4.1 in x 1.5 in x 2.9 in) and is constructed for installation in QO load centers and NQ panelboards with pressure plate terminals accepting copper wire from 14 to 6 AWG or aluminum from 12 to 4 AWG. The Class A Ground Fault Circuit Interrupter (GFCI) is rated to trip at 5mA of fault current and is certified to operate within a temperature range of -25°C to 70°C (-13°F to 158°F). It complies with UL and CSA standards, making it suitable for safeguarding branch circuits in environments requiring personnel protection from ground faults.

Key Features & Specifications
  • Type: Molded Case, Ground Fault Circuit Interrupter (GFCI), Class A (5mA trip), Thermal-Magnetic Protection
  • Voltage Rating: 120/240VAC
  • Current Rating: 40A
  • Frame Size: 100A/QO
  • Poles: 2
  • AIC Rating: 10kA @ 240V
  • Connection: Bolt-On, Pressure Plate Terminal
  • Phase: 1
  • Functions: LI (Long-Time and Instantaneous Trip)
  • Wire Size: 14-6 AWG Copper, 12-4 AWG Aluminum
  • Panel Type: QO Load Centers, NQ Panelboards
  • Standards: UL Listed, CSA
  • Temp Rating: -25°C to 70°C (-13°F to 158°F)
  • Dimensions: 105 mm H x 38 mm W x 74 mm D (4.1 in x 1.5 in x 2.9 in)
  • Weight: 1.036 lb
  • Country of Origin: Mexico


Product Identification
  • UPC: 785901362951
  • GTIN: 00785901362951