QOB370VH - 70A Circuit Breaker

QOB370VH - 70A Circuit Breaker

The QOB370VH is a 3-pole, 70-amp bolt-on thermal magnetic circuit breaker designed to provide dependable overcurrent and short-circuit protection for your commercial and industrial electrical distribution systems. Built for use in compatible bolt-on panelboards and load centers, this breaker combines secure mechanical installation with consistent electrical performance. Its 22kA interrupting rating at 240VAC makes it well-suited for applications where higher available fault current requires enhanced protection. The thermal-magnetic trip mechanism responds to both prolonged overload conditions and sudden short circuits, helping you safeguard electrical equipment and support system reliability. Whether you're replacing an existing breaker or maintaining electrical infrastructure, the QOB370VH delivers the dependable protection professionals expect in demanding environments.

Key Features and Benefits

• 70 Amp Current Rating: 70 Amp current rating for medium- to high-capacity branch circuit protection.
• Three-Pole Configuration: Three-pole configuration designed for three-phase electrical systems.
• Bolt-On Mounting: Bolt-on mounting provides a secure connection that helps minimize movement and vibration in commercial and industrial installations.
• Thermal Magnetic Protection: Thermal magnetic trip technology protects against both sustained overloads and instantaneous short circuits.
• 22kA Interrupting Capacity: 22 kA interrupting capacity at 240 VAC supports applications with higher available fault current.
• Type QOB-VH Compatibility: Type QOB-VH circuit breaker is designed for use in compatible electrical distribution equipment.
• Compact Footprint: Compact footprint helps simplify installation and replacement in compatible panelboards.
  

Technical Specifications

• Part Number: QOB370VH
  
• Type: QOB-VH
  
• Circuit Breaker Type: Thermal Magnetic
  
• Mounting Style: Bolt-On
  
• Poles: 3
  
• Amperes: 70A
  
• Interrupting Rating: 22kA @ 240VAC
  
• Voltage Rating: 240VAC
  
• Dimensions:
  • Height: 3.5 in.
  • Width: 2.25 in.
  • Depth: 2.5 in.

Material Compliance and Certifications

• Industry Standards: The QOB370VH is manufactured for use in electrical power distribution systems and is designed to meet applicable industry standards for molded-case circuit breakers.
• Installation Guidance: Proper installation should always follow applicable National Electrical Code (NEC) requirements, local electrical codes, and the equipment manufacturer's installation guidelines. Verify compatibility with your panelboard or load center before installation to ensure safe and reliable operation.
  

Where It Works Best

• The QOB370VH is well-suited for a wide range of commercial, industrial, and institutional electrical systems that require reliable three-phase circuit protection. Common applications include:
  • Commercial buildings and office facilities
  • Industrial manufacturing equipment
  • Distribution panels and panelboards
  • Mechanical and HVAC systems
  • Pumps, motors, and other three-phase loads
  • Electrical maintenance, repair, and retrofit projects
  Its combination of a 70-amp rating, three-pole design, bolt-on installation, and 22kA @ 240VAC interrupting capacity makes the QOB370VH an excellent choice for protecting electrical circuits in demanding environments where dependable overcurrent protection is essential.