QOU250 - 50 Amp Circuit Breaker

QOU250 - 50 Amp Circuit Breaker

Some electrical installations need more flexibility than a standard load center can offer. Whether you're working with a custom electrical enclosure, maintaining commercial equipment, or replacing an existing breaker, the Square D QOU250 50 Amp 2-Pole Circuit Breaker provides reliable overcurrent protection in a compact, unit-mounted design.

Manufactured by Schneider Electric, the QOU250 is a 50-amp, two-pole miniature molded-case circuit breaker for residential and commercial applications. It protects compatible circuits against overloads and short circuits and has a 10kA interrupting rating at 120/240V AC. Its unit-mount construction also suits electrical assemblies where a conventional plug-on breaker isn't the right fit.

Key Features and Benefits

• 50-Amp, Two-Pole Design: Provides overcurrent protection for compatible electrical circuits requiring a 50A, two-pole breaker.
• Overload and Short-Circuit Protection: Helps protect electrical wiring and connected equipment from excessive current and fault conditions.
• Flexible Mounting: Unit-mount construction supports installation in compatible electrical enclosures and assemblies using the appropriate mounting accessories.
• Copper or Aluminum Connections: Slotted box lugs on the line and load sides accommodate approved conductors from 14 AWG through 2 AWG.
• AC and DC Operational Voltage Ratings: Rated for 120V AC, 120/240V AC, and 48V DC operation, subject to application requirements.

Technical Specifications

• Manufacturer: Schneider Electric
  
• Brand: Square D
  
• Catalog Number: QOU250
  
• Product Series: QOU
  
• Product Type: Miniature molded case circuit breaker
  
• Circuit Breaker Type: Standard
  
• Rated Current: 50 Amps
  
• Number of Poles: 2
  
• Protection Type: Overcurrent and short-circuit protection
  
• Rated AC Voltage: 120V AC / 120/240V AC
  
• Rated DC Voltage: 48V DC
  
• AC Interrupting Rating: 10kA at 120V AC and 120/240V AC
  
• Mounting Type: Unit mount
  
• Electrical Connection: Slotted box lugs, line and load sides
  
• Compatible Conductors: Copper and aluminum
  
• Wire Size Range: 14 AWG to 2 AWG
  
• Terminal Tightening Torque: 45 lbf-in (5.08 N·m)
  
• Height: 4.05 inches (102.87 mm)
  
• Width: 1.50 inches (38.1 mm)
  
• Depth: 2.95 inches (74.93 mm)
  
• HACR Rated: Yes
  
• Product Certifications: UL Listed, CSA, IEC (as identified in manufacturer specifications)
  

Material Compliance and Certifications

Electrical protection starts with choosing equipment that meets the installation requirements. Schneider Electric identifies the Square D QOU250 with the following certifications and material compatibility information:

• UL Listed
• CSA Certification
• IEC Certification Information
• HACR Rated
• Copper and Aluminum Conductor Compatibility

Where It Works Best

• Residential Electrical Equipment
  
• Commercial Electrical Installations
  
• 50-Amp Two-Pole AC Circuits
  
• Electrical Control Panels
  
• Custom Equipment Enclosures
  
• Unit-Mounted Electrical Assemblies
  
• Electrical Equipment Protection
  
• Heating and Air Conditioning Equipment
  
• Refrigeration Equipment
  
• AC Electrical Switching Applications
  
• Compatible DC Electrical Systems
  
• Electrical Equipment Maintenance
  
• Existing Square D QOU250 Replacements