QOB340VH - 40 Amp Circuit Breaker

QOB340VH - 40 Amp Circuit Breaker

When dependable circuit protection matters, the QOB340VH delivers the performance that electricians, contractors, and maintenance professionals rely on. This 3-pole, 40-amp bolt-on thermal magnetic circuit breaker is designed to help protect electrical systems from overloads and short circuits while keeping power distribution operating safely and efficiently. With a 22kA interrupting rating at 240VAC, it's well-suited for installations where higher fault-current protection is required. Its bolt-on design provides a secure fit within compatible panelboards, helping create a stable electrical connection that stands up to the demands of busy commercial and industrial environments.

Whether you're replacing a worn breaker during routine maintenance or upgrading an existing electrical system, the QOB340VH offers the dependable protection needed for three-phase circuits serving HVAC equipment, motors, lighting, and other essential electrical loads. Its thermal magnetic trip mechanism responds to both prolonged overloads and sudden fault conditions, helping protect valuable equipment while minimizing the risk of unnecessary downtime. Compact in size yet built for demanding applications, this breaker is a practical choice for professionals who value long-term reliability and consistent performance.

Key Features and Benefits

• 40 Amp Current Rating: 40 Amp current rating for dependable branch circuit protection.
• 3-Pole Design: 3-pole design ideal for three-phase electrical distribution systems.
• Bolt-On Mounting: Bolt-on mounting creates a secure mechanical and electrical connection.
• Thermal Magnetic Protection: Thermal magnetic trip technology helps guard against both overloads and short circuits.
• 22kA Interrupting Capacity: 22kA interrupting capacity at 240VAC supports applications with higher available fault currents.
• Compact Dimensions: Compact dimensions make efficient use of available panel space.
• Dependable Performance: Built for dependable performance in demanding commercial and industrial environments.
• Equipment Protection: Helps protect connected equipment while supporting reliable system operation.
  

Technical Specifications

• Part Number: QOB340VH
  
• Type: QOB-VH
  
• Circuit Breaker Type: Thermal Magnetic
  
• Mounting Style: Bolt-On
  
• Number of Poles: 3
  
• Amperage: 40 Amps
  
• Interrupting Rating: 22kA @ 240VAC
  
• Dimensions:
  • Height: 3.5 in.
  • Width: 2.25 in.
  • Depth: 2.5 in.

Material Compliance and Certifications

• Industry Standards: The QOB340VH is manufactured to meet applicable industry standards for molded case circuit breakers. For safe operation and optimal performance, installation should be completed in accordance with the National Electrical Code (NEC), local electrical codes, and the equipment manufacturer's recommendations.
• Installation Guidance: Always verify compatibility with your electrical panel and application before installation.
  

Where It Works Best

• The QOB340VH is a great fit for a variety of demanding electrical applications, including:
  • Commercial office buildings
  • Industrial facilities and manufacturing plants
  • Schools, hospitals, and institutional buildings
  • Retail and mixed-use developments
  • HVAC systems
  • Motor branch circuits
  • Three-phase lighting and power distribution
  • Electrical panelboards requiring bolt-on circuit breakers
  From routine maintenance projects to new electrical installations, the QOB340VH 40 Amp 3-Pole Bolt-On Thermal Magnetic Circuit Breaker offers the dependable overcurrent protection professionals count on. Its combination of secure bolt-on installation, thermal magnetic protection, and high interrupting capacity makes it a trusted solution for keeping electrical systems operating safely and efficiently.