QOU370 - 70 Amp Circuit Breaker

QOU370 - 70 Amp Circuit Breaker

When your electrical system calls for a 70-amp, three-pole breaker, getting the specifications right is essential. The Square D QOU370 70 Amp 3-Pole Circuit Breaker delivers dependable overcurrent protection in a compact design suited for residential and commercial electrical applications. Manufactured by Schneider Electric, this QOU-series miniature molded case circuit breaker features thermal-magnetic protection and a 10kA interrupting rating at 120V AC, 120/240V AC, and 240V AC. It also includes Square D's VisiTrip indicator, making it easier to spot a tripped breaker when troubleshooting electrical equipment.

Key Features and Benefits

• 70-Amp, Three-Pole Protection: Designed for compatible electrical circuits requiring a 70A, three-pole breaker.
• VisiTrip Indicator: Provides a visible indication when the breaker trips, simplifying troubleshooting.
• Flexible Mounting Options: Supports DIN rail, surface, or flush mounting with suitable hardware.
• Copper and Aluminum Compatibility: Line and load lugs accept conductors ranging from 12 AWG to 2/0 AWG.

Technical Specifications

• Manufacturer: Schneider Electric
  
• Brand: Square D
  
• Catalog Number: QOU370
  
• Product Series: QOU
  
• Product Type: Miniature Molded Case Circuit Breaker
  
• Circuit Breaker Type: Standard
  
• Protection Type: Thermal-Magnetic
  
• Rated Current: 70 Amps
  
• Number of Poles: 3
  
• Rated AC Operational Voltage: 120V AC / 120/240V AC / 240V AC
  
• Rated DC Operational Voltage: 60V DC
  
• AC Interrupting Rating: 10kA at 120V AC, 120/240V AC, and 240V AC
  
• Trip Indication: VisiTrip
  
• Mounting Mode: Unit Mount
  
• Mounting Options: DIN Rail, Surface, or Flush Mounting with Appropriate Hardware
  
• Line-Side Connection: Slotted Box Lugs
  
• Load-Side Connection: Slotted Box Lugs
  
• Compatible Conductor Materials: Copper and Aluminum
  
• Conductor Size Range: 12 AWG to 2/0 AWG
  
• Specified Terminal Tightening Torque: 45 lbf-in (5.08 N·m) for 14–2 AWG Conductors
  
• Height: 4.05 inches (102.87 mm)
  
• Width: 2.25 inches (57.15 mm)
  
• Depth: 2.95 inches (74.93 mm)
  
• HACR Rated: Yes
  
• Product Certifications: UL Listed, CSA, IEC
  
• Country of Origin: Mexico
  
• Manufacturer Warranty: 18 Months
  

Material Compliance and Certifications

• UL Listed: Identified as UL Listed in Schneider Electric's product specifications.
• CSA: Manufacturer-listed certification for the QOU370.
• IEC: Included among the manufacturer's product certifications.
• HACR Rated: Suitable for appropriately rated heating, air conditioning, and refrigeration applications.
• Conductor Compatibility: Accepts copper and aluminum conductors from 12 AWG through 2/0 AWG.

Where It Works Best

• Residential Electrical Systems
  
• Commercial Electrical Installations
  
• Compatible 70-Amp Three-Pole Circuits
  
• Custom Electrical Enclosures
  
• DIN Rail-Mounted Electrical Assemblies
  
• Surface- and Flush-Mounted Breaker Installations
  
• Heating and Air Conditioning Equipment
  
• Refrigeration Equipment
  
• Electrical Maintenance and Repairs