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Square D QOB350GFI - 3-Pole GFCI Breaker (50A, 10kA AIC)

Square D
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Square D QOB350GFI is a three-pole molded case circuit breaker designed to provide ground fault protection and overcurrent interruption for three-phase electrical systems. It operates at a 50A current rating with a voltage rating of 120/240VAC and features a 100A/QO frame size with a 10kA interrupting capacity at 240V. The breaker is constructed with a compact bolt-on connection and pressure plate terminals, measuring 105 mm H x 57 mm W x 74 mm D (4.1 in x 2.2 in x 2.9 in) and weighing 1.4 lb, and it is rated for operation from -25°C to 70°C (-13°F to 158°F). This unit is UL Listed and CSA certified, ensuring compliance with North American safety standards for use in QO load centers and NQ panelboards within commercial and light industrial applications.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, Ground Fault Circuit Interrupter (Class A - 5mA), QOB Series
  • Voltage Rating: 120/240VAC
  • Current Rating: 50A
  • Dimensions: 105 mm H x 57 mm W x 74 mm D (4.1 in x 2.2 in x 2.9 in)
  • Weight: 1.4 lb
  • Standards: UL Listed, CSA
  • Applications: Commercial and light industrial three-phase power distribution
  • Switch Type: Circuit Breaker
  • Configuration: Bolt-On
  • Temp Rating: -25°C to 70°C (-13°F to 158°F)
  • Phase: 3
  • Amperage: 50A
  • AIC rating: 10kA@240V
  • Connection: Bolt-On
  • Poles: 3
  • Protection: Ground Fault, Overcurrent
  • Functions: LI - Long-Time and Instantaneous
  • Frame Size: 100A/QO
  • Panel Type: QO Load Centers and NQ Panelboards
  • Breaker Type: Ground Fault Circuit Interrupter (GFCI)
  • MCM Size: Min. Wire Size 12 AWG (Al), 14 AWG (Cu); Max. Wire Size 4 AWG (Al), 6 AWG (Cu)
  • Terminal Connection: Pressure Plate
  • Wire Size: AWG 12 to AWG 4, Aluminum; AWG 14 to AWG 6, Copper
  • Certification: UL Listed
  • Frequency Rating: 50/60 Hz
  • Phase Connection: 3-Phase
  • Compatible Frames: QO Series
  • Installation Type: Panel Mount
  • Country of Origin: Mexico


Product Identification
  • UPC: 785901690184
  • GTIN: 00785901690184