QO320 - 20 Amp Circuit Breaker

QO320 - 20 Amp Circuit Breaker

When you need dependable circuit protection for a compatible QO electrical panel, the QO320 is a solid choice. This 20-amp, 3-pole plug-on circuit breaker is designed to help protect wiring and connected equipment from damage caused by overloads and short circuits. Rated for 240VAC with a 10kA interrupting capacity, it is commonly used in three-phase electrical systems found in residential, commercial, and light industrial applications.

The plug-on design makes installation straightforward in compatible QO load centers and panelboards, making it a practical option for replacing a worn breaker or completing a new installation. Matching the correct amperage, pole configuration, and breaker type is essential for safe operation, and the QO320 provides the specifications needed for a wide range of branch circuit applications.

Key Features and Benefits

• 20 Amp current rating
• Three-pole configuration for three-phase circuits
• Plug-on mounting for compatible QO panels
• 10kA interrupting rating at 240VAC
• Helps protect electrical circuits from overloads and short circuits
• Compact size fits compatible load centers and panelboards
• Suitable for residential, commercial, and light industrial electrical systems
  

Technical Specifications

• Part Number: QO320
  
• Type: QO
  
• Mounting Style: Plug-On
  
• Poles: 3
  
• Amperage: 20 Amps
  
• Voltage Rating: 240VAC
  
• Interrupting Capacity: 10kA @ 240VAC
  
• Dimensions:
  • Height: 3.0 in.
  • Width: 2.25 in.
  • Depth: 2.5 in.

Material Compliance and Certifications

• Built for use in compatible QO electrical distribution equipment.
• Designed to meet applicable industry standards for molded case circuit breakers.
• Installation should be performed in accordance with the National Electrical Code (NEC) and all applicable local electrical codes.
• Always verify compatibility with your panel before installation.
  

Where It Works Best

• The QO320 works well anywhere a compatible QO panel requires a 20-amp, 3-pole breaker. It's commonly used to protect three-phase branch circuits serving HVAC equipment, small motors, lighting systems, and other commercial or industrial electrical loads. It's also a practical replacement when an existing breaker with the same ratings needs to be changed.