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Square D QO330GFI - Ground Fault Breaker 30A 3-Pole

Square D
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Square D QO330GFI is a 30 Amp, 3-pole plug-in ground fault circuit interrupter from the QO Series, designed to provide Class A (5mA) ground fault and thermal magnetic protection for personnel and equipment. This molded case breaker operates at 120/240V with a 10kA interrupting rating at 240V, supporting wire sizes from 14 to 8 AWG copper or aluminum via pressure plate terminals. Measuring 4.1 in (105 mm) x 2.2 in (57 mm) x 2.9 in (74 mm) and weighing 1.36 lb, it features a compact plug-in construction for direct installation in QO load centers and NQ panelboards. The breaker is UL Listed and CSA certified, with a temperature rating of -13°F to 158°F (-25°C to 70°C) and a 100A/QO frame size. It is commonly used in industrial and commercial applications requiring ground fault protection on three-phase circuits.

Key Features & Specifications
  • Type: QO
  • Breaker Type: Ground Fault Circuit Interrupter (Class A - 5mA)
  • Current Rating: 30A
  • Voltage Rating: 120/240V
  • Poles: 3
  • Phase: 3
  • Frame Size: 100A/QO
  • Protection: Thermal Magnetic
  • Functions: Long Time and Instantaneous
  • AIC Rating: 10kA@240V
  • Connection: Plug-In
  • Terminal Connection: Pressure Plate
  • Wire Size: AWG 14, AWG 8 Copper, AWG 12, AWG 8 Aluminium
  • Min. Wire Size: 12 AWG (Al), 14 AWG (Cu)
  • Max. Wire Size: 8 AWG
  • Panel Type: QO Load Centers and NQ Panelboards
  • Dimensions: 4.1 in (105 mm) x 2.2 in (57 mm) x 2.9 in (74 mm) (Height x Width x Depth)
  • Weight: 1.36 lb
  • Temp Rating: -13–158 °F (-25–70 °C)
  • Standards: CSA, UL Listed
  • Certification: UL Listed
  • Country of Origin: Mexico


Product Identification
  • UPC: 785901218975
  • GTIN: 00785901218975