QOU270 - 70 Amp Circuit Breaker

QOU270 - 70 Amp Circuit Breaker

When your electrical installation calls for a higher-amperage breaker with flexible mounting options, the Square D QOU270 70 Amp 2-Pole Circuit Breaker is a practical choice. Manufactured by Schneider Electric, this QOU series miniature molded case circuit breaker provides overcurrent protection for compatible residential and commercial electrical systems. With a 70-amp rating, 10kA AC interrupting capacity, and unit-mount design, it fits applications where a conventional plug-on breaker isn't the right solution. Whether you're assembling a custom electrical enclosure or replacing an existing QOU270, its compact construction helps make efficient use of available space.

Key Features and Benefits

• 70-Amp, Two-Pole Design: Provides overcurrent protection for compatible 70A circuits requiring a two-pole breaker.
• Thermal-Magnetic Protection: Responds to overloads and short circuits, helping protect wiring and connected electrical equipment from excessive current.
• VisiTrip Indicator: Provides a clear visual indication when the breaker trips, simplifying circuit identification and troubleshooting.
• Flexible Mounting Options: Supports DIN rail, surface, and flush mounting with the appropriate mounting accessories.
• Copper and Aluminum Connections: Slotted box lugs on the line and load sides accept approved copper or aluminum conductors ranging from 12 AWG to 2/0 AWG.
• AC and DC Operational Voltage Ratings: Rated for 120V AC, 120/240V AC, and 48V DC operation, subject to the applicable electrical ratings and installation requirements.

Technical Specifications

• Manufacturer: Schneider Electric
  
• Brand: Square D
  
• Catalog Number: QOU270
  
• Product Series: QOU
  
• Product Type: Miniature molded case circuit breaker
  
• Circuit Breaker Type: Standard
  
• Rated Current: 70 Amps
  
• Number of Poles: 2
  
• Trip Mechanism: Thermal-magnetic
  
• Trip Indicator: VisiTrip
  
• 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
  
• Mounting Options: DIN rail, surface, or flush mounting with appropriate hardware
  
• Line Connection: Slotted box lugs
  
• Load Connection: Slotted box lugs
  
• Compatible Conductors: Copper and aluminum
  
• Wire Size Range: 12 AWG to 2/0 AWG
  
• Terminal Tightening Torque: 45 lbf-in (5.08 N·m) for 14 AWG to 2 AWG conductors, as specified by the manufacturer
  
• Height: 4.45 inches (113.03 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)
  
• Country of Origin: Mexico
  

Material Compliance and Certifications

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

Where It Works Best

• Residential Electrical Equipment
  
• Commercial Electrical Installations
  
• 70-Amp Two-Pole AC Circuits
  
• Electrical Control Panels
  
• Custom Electrical Enclosures
  
• DIN Rail-Mounted Assemblies
  
• Surface-Mounted Electrical Assemblies
  
• Flush-Mounted Electrical Assemblies
  
• Heating and Air Conditioning Equipment
  
• Refrigeration Equipment
  
• Electrical Equipment Maintenance
  
• Existing Square D QOU270 Replacements