QO350 - 50 Amp Circuit Breaker

QO350 - 50 Amp Circuit Breaker

The QO350 Plug-On Circuit Breaker is a 3-pole, 50-amp circuit breaker designed to provide dependable overcurrent and short-circuit protection for compatible electrical distribution systems. Built for use in 240VAC applications with a 10kA interrupting rating (A.I.C.), this Type QO plug-on breaker helps protect branch circuits and connected equipment from damage caused by overloads and fault conditions. Its plug-on design allows for efficient installation into compatible load centers and panelboards, making it a practical choice for electrical maintenance, repairs, upgrades, and new installations. Whether you're servicing a commercial facility, industrial workspace, or demanding residential application, the QO350 delivers the reliable circuit protection professionals expect while helping keep electrical systems operating safely and efficiently.

Key Features and Benefits

• 50 Amp current rating: For protecting higher-capacity branch circuits.
• 3-pole configuration: Designed for three-phase electrical systems.
• Type QO design: For compatibility with designated QO load centers and panelboards.
• Plug-on installation: Simplifies panel installation and replacement.
• 10kA A.I.C. rating at 240VAC: Provides dependable interruption of available fault current within its rating.
• Helps protect wiring and connected equipment: From overloads and short circuits.
• Compact footprint: Makes it well-suited for space-conscious electrical panels.
  

Technical Specifications

• Part Number: QO350
  
• Type: QO
  
• Mounting Style: Plug-On
  
• Poles: 3
  
• Amperes: 50A
  
• Voltage Rating: 240VAC
  
• A.I.C. Rating: 10kA @ 240VAC
  
• Dimensions:
  • Height: 3.0 in.
  • Width: 2.25 in.
  • Depth: 2.5 in.

Material Compliance and Certifications

• Manufactured for use: In compatible electrical distribution systems.
• Industry Standards: Designed to meet applicable industry performance standards for its product class.
• Installation Requirements: Installation should be performed in accordance with the National Electrical Code (NEC) and all applicable local electrical codes. Always verify compatibility with your specific panelboard or load center before installation.
  

Where It Works Best

• The QO350 3-pole 50-amp circuit breaker is well suited for protecting three-phase branch circuits in commercial, industrial, and residential electrical systems that use compatible Type QO load centers or panelboards. It is commonly used for motors, HVAC equipment, distribution circuits, and other applications requiring dependable 50A overcurrent protection at 240VAC. Its plug-on design also makes it an excellent option for routine panel maintenance, equipment replacements, and electrical system upgrades where compatibility with a Type QO panel is required.