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Square D QOX320 - Miniature Circuit Breaker 20A 3-Pole

United Fuses
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Square D QOX320 is a 3-pole miniature circuit breaker designed for overcurrent protection in commercial and industrial electrical systems. It operates at 120/240VAC with a 20A amperage rating and a 10kA interrupting capacity, utilizing a thermal magnetic trip unit for overload and short-circuit protection. The unit features a plug-in mounting design with a toggle actuator and pressure plate connections, weighing 5.19 lb. It is certified to UL and CSA standards and is HACR rated for HVAC equipment. Typical applications include use in QO load centers, NQ and NQOD panelboards, and OEM bases.

Key Features & Specifications
  • Type: Miniature Circuit Breaker
  • Amperage: 20A
  • Voltage: 120/240VAC, 48VDC
  • Poles: 3
  • Mounting Type: Plug-In
  • Interrupt Rating: 10kA at 120/240VAC
  • Series/Frame: QO
  • Trip Unit: Thermal Magnetic
  • Certifications: UL, CSA, HACR
  • Wire Size: 14 to 8 AWG
  • Temperature Rating: 40°C (104°F)
  • Actuator Type: Toggle
  • Connection Type: Pressure Plate
  • Weight: 5.19 lb