QOB145 - 45 Amp Circuit Breaker

QOB145 - 45 Amp Circuit Breaker

The Schneider Electric QOB145 Miniature Circuit Breaker is built to deliver dependable protection for your electrical circuits. Part of the well-known QO series, it’s a go-to choice for electricians and contractors who want something that installs easily and performs without issues. Rated for 45 amps and 120/240 VAC, this breaker can handle heavier residential and light commercial loads while keeping your system safe from overloads and short circuits. Designed with a bolt-on, single-pole setup, the QOB145 fits securely in panelboards and load centers without hassle. It uses a thermal-magnetic trip mechanism that responds quickly to potential faults, and the VisiTrip indicator makes it easy to see when the breaker has been triggered—no guesswork needed. Whether you’re replacing a worn-out breaker or setting up a new system, this model is a solid choice that balances safety, efficiency, and straightforward installation.

Key Features and Benefits

• Handles 45 amps at 120/240 VAC: Making it suitable for a range of home and small business applications.
• 10kA interrupting capacity: Offers strong protection against higher fault currents.
• Thermal-magnetic trip system: For effective overload and short circuit protection.
• Bolt-on installation: Ensures a tight, secure fit in your electrical panel.
• VisiTrip indicator: Lets you know immediately if a breaker has tripped.
  

Technical Specifications

• Series: QO
  
• Current Rating: 45 Amps
  
• Voltage: 120/240 VAC
  
• Mounting: Bolt-on
  
• Poles: 1
  
• Interrupt Rating: 10 kA
  
• Electrical Connection: Box lugs
  
• Wire Size: AWG 8 to AWG 2 (copper or aluminum)
  
• Dimensions:
  • Height: 3.1 inches
  • Width: 0.7 inches
  • Depth: 2.9 inches
• Weight: 0.311 lb
  

Material Compliance and Certifications

• Green Premium™ Program: Meets modern safety and environmental standards.
• Compliance: RoHS and REACh guidelines, no toxic heavy metals or mercury, halogen-free materials.
• Certifications: UL Listed (File E84967) and CSA Certified (Master Contract 153555).
  

Suitability

• Perfect for residential panels, small offices, and light commercial setups, the Schneider Electric QOB145 is a practical upgrade or replacement breaker. Electricians appreciate its dependable performance, and building owners trust it to keep electrical systems protected and running smoothly.