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Square D QO350GFI - 3-Pole GFCI Breaker 50A 120/240V

Square D
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Square D QO350GFI is a three-pole, plug-in molded case circuit breaker designed to provide ground fault protection for 50A circuits in three-phase electrical systems. It operates at 120/240V AC with a 10kA interrupting rating and features a thermal-magnetic trip mechanism for combined overload and short-circuit protection. The compact unit measures 105 mm x 57 mm x 74 mm (HxWxD), weighs 1.4 lb, and is constructed for reliable operation in temperatures from -25°C to 70°C. It complies with CSA and UL standards and is specifically engineered for installation in QO load centers and NQ panelboards, making it suitable for commercial and light industrial applications requiring Class A (5mA) ground fault interruption.

Key Features & Specifications
  • Type: Three-pole, plug-in, molded case Ground Fault Circuit Interrupter (Class A - 5mA) with thermal-magnetic protection
  • Voltage Rating: 120/240V AC
  • Current Rating: 50A
  • Frame Size: 100A/QO
  • Interrupting Rating (AIC): 10kA @ 240V
  • Phase: 3
  • Connection: Plug-In
  • Terminal Connection: Lug
  • Wire Size: Minimum 12 AWG (Al) / 14 AWG (Cu); Maximum 4 AWG (Al) / 6 AWG (Cu)
  • Dimensions: 4.1 in (105 mm) H x 2.2 in (57 mm) W x 2.9 in (74 mm) D
  • Weight: 1.4 lb
  • Operating Temperature: -13°F to 158°F (-25°C to 70°C)
  • Standards & Certification: CSA, UL Listed
  • Panel Type: Compatible with QO Load Centers and NQ Panelboards
  • Protection Functions: Long Time and Instantaneous Trip
  • Manufacturer: Schneider Electric
  • Family: QO Series
  • Country of Origin: Mexico


Product Identification
  • UPC: 785901218999
  • GTIN: 00785901218999