QOU150 - 50 Amp Circuit Breaker

QOU150 - 50 Amp Circuit Breaker

Finding the right circuit breaker shouldn't be complicated. You need one that matches your equipment, handles the required amperage, and fits where it's supposed to. The Schneider Electric Square D QOU150 50 Amp Circuit Breaker checks those boxes for electrical systems designed to use QOU breakers.

Whether you're replacing an existing QOU150 or working on a new installation, this breaker offers a practical combination of 50-amp circuit protection, thermal-magnetic operation, and flexible mounting options. Nothing overly complicated—just the features you need when the electrical specifications have to be right.

Key Features and Benefits

• 50-Amp Circuit Protection: Designed for electrical circuits that require a 50-amp, single-pole breaker. It helps protect properly sized wiring and equipment from overloads and short circuits.
• Thermal-Magnetic Trip Mechanism: The thermal element responds to prolonged overloads, while the magnetic element reacts to short-circuit conditions. Both work together to interrupt excessive current.
• Single-Pole Configuration: A straightforward option for compatible circuits that call for one-pole overcurrent protection.
• AC and DC Voltage Ratings: The breaker is rated for operation at 120VAC, 120/240VAC, and 48VDC. DC applications require separate verification of the applicable interrupting rating.
• Copper and Aluminum Wire Compatibility: Slotted box lugs on both ends accommodate the manufacturer's specified range of copper and aluminum conductors.

Technical Specifications

• Manufacturer: Schneider Electric
  
• Brand: Square D
  
• Catalog Number: QOU150
  
• Product Series: QOU
  
• Product Type: Miniature molded case circuit breaker
  
• Circuit Breaker Type: Standard
  
• Rated Current: 50 Amps
  
• Number of Poles: 1
  
• Trip Mechanism: Thermal-magnetic
  
• Rated Operational Voltage: 120VAC, 120/240VAC, 48VDC
  
• Interrupting Rating at 120VAC: 10kA
  
• Interrupting Rating at 120/240VAC: 10kA
  
• Application Classification: HACR rated
  
• Mounting Mode: Unit mount
  
• Mounting Options: DIN rail, surface, or flush mounting with appropriate accessories
  
• Line-Side Connection: Slotted box lug
  
• Load-Side Connection: Slotted box lug
  
• Compatible Conductor Materials: Copper and aluminum
  
• Manufacturer-Listed 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: 0.75 inches (19.05 mm)
  
• Depth: 2.95 inches (74.93 mm)
  
• Manufacturer-Stated Warranty: 18 months
  

Material Compliance and Certifications

When you're choosing electrical protection equipment, safety certifications are just as important as the amp rating. Schneider Electric identifies the QOU150 with the following certifications and classifications:

• UL Listed
• CSA Certified
• IEC Certification Information
• HACR Rated
• UL and CSA Product Verification

Where It Works Best

• Residential Electrical Equipment
  
• Commercial Electrical Installations
  
• Heating and Air Conditioning Equipment
  
• Refrigeration Systems
  
• Electrical Control Panels
  
• Equipment Enclosures
  
• DIN Rail-Mounted Electrical Assemblies
  
• Surface-Mounted Electrical Installations
  
• Flush-Mounted Electrical Installations
  
• Compatible 50-Amp AC Circuits
  
• Compatible 48VDC Applications
  
• Electrical Equipment Maintenance
  
• Existing QOU150 Breaker Replacements
  
• Space-Constrained Electrical Assemblies