QOB370 - 70A Circuit Breaker

QOB370 - 70A Circuit Breaker

If you're replacing a worn breaker or servicing an existing electrical panel, the QOB370 is a dependable choice for protecting three-phase circuits. This 70-amp, 3-pole bolt-on circuit breaker is designed for compatible Type QOB panelboards and helps protect electrical systems against overloads and short circuits. Its 10 kA interrupting rating at 240 VAC makes it well-suited for many commercial and industrial applications where reliable circuit protection is essential.

The bolt-on design provides a secure connection to the panel, which many electricians prefer for installations that may experience vibration or frequent use. Whether it's protecting HVAC equipment, motors, lighting, or other three-phase loads, the QOB370 is made to do one job well—help keep your electrical system operating safely while protecting connected equipment from unexpected electrical faults. Its compact size also makes it easier to fit into compatible panelboards without taking up unnecessary space.

Key Features and Benefits

• 70 Amp Current Rating: 70 Amp current rating.
• Three-Pole Configuration: Three-pole configuration for three-phase electrical systems.
• Bolt-On Mounting: Bolt-on mounting for a secure installation.
• 10kA Interrupting Rating: 10kA interrupting rating at 240VAC.
• Type QOB Compatibility: Compatible with Type QOB panelboards.
• Circuit Protection: Helps protect circuits from overloads and short circuits.
• Compact Design: Compact design for straightforward installation in compatible equipment.
  

Technical Specifications

• Part Number: QOB370
  
• Type: QOB
  
• Mounting Style: Bolt-On
  
• Poles: 3
  
• Amperes: 70
  
• A.I.C. Rating: 10kA
  
• Voltage: 240VAC
  
• Dimensions:
  • Height: 3.5 in.
  • Width: 2.25 in.
  • Depth: 2.5 in.

Material Compliance and Certifications

• Installation Standards: The QOB370 is manufactured for use in electrical distribution systems and is intended for installation in compatible equipment. It should be installed in accordance with the National Electrical Code (NEC), applicable local electrical codes, and the manufacturer's installation instructions.
• Compatibility Guidance: Using the correct breaker for your panel helps ensure safe operation and dependable performance.
  

Where It Works Best

• The QOB370 is commonly used in applications such as:
  • Commercial buildings
  • Industrial facilities
  • Manufacturing equipment
  • HVAC systems
  • Motor control circuits
  • Distribution panelboards
  • OEM equipment
  • Retail and institutional electrical systems
  When dependable three-phase circuit protection is needed, the QOB370 70 Amp Bolt-On Circuit Breaker is a practical solution for keeping compatible electrical systems protected and operating as intended.