QO340VH - 40Amp Circuit Breaker

QO340VH - 40Amp Circuit Breaker

When you need dependable circuit protection for a three-phase electrical system, the QO340VH is built to get the job done. This 40 amp, 3-pole plug-on circuit breaker is designed to help protect electrical circuits from overloads and short circuits while providing a 22kA interrupting rating at 240VAC for applications where higher fault current capacity is required. Its plug-on design makes installation into compatible equipment straightforward, making it a practical choice whether you're replacing an existing breaker or completing a new electrical project. The compact size also helps conserve valuable panel space without sacrificing performance. From commercial buildings to industrial facilities and larger residential installations, the QO340VH is a reliable solution for protecting equipment and keeping electrical systems operating safely.

Key Features and Benefits

• 40-amp current rating for branch-circuit protection.
• Three-pole design for compatible three-phase electrical systems.
• 22kA interrupting capacity at 240VAC for applications where higher fault current capacity is required.
• Plug-on construction for fast installation in compatible panels.
• Compact dimensions help maximize available panel space.
• Helps reduce the risk of equipment damage caused by overloads and short circuits.
• Suitable for both replacement and new installation projects.
  

Technical Specifications

• Part Number: QO340VH
  
• Type: QO-VH
  
• Style: Plug-On Circuit Breaker
  
• Poles: 3
  
• Current Rating: 40 Amps
  
• Voltage: 240VAC
  
• Interrupting Rating: 22kA @ 240VAC
  
• Dimensions:
  • Height: 3.5 in.
  • Width: 2.25 in.
  • Depth: 2.5 in.

Material Compliance and Certifications

• Incompatible with electrical distribution equipment.
• Designed to meet applicable industry requirements for molded case circuit breakers.
• Installation should follow the National Electrical Code (NEC), local electrical codes, and manufacturer recommendations. Always confirm panel compatibility before installation.
  

Where It Works Best

• The QO340VH is a good fit for commercial, industrial, and residential electrical systems that require a 3-pole, 40 amp circuit breaker with a 22kA interrupting rating at 240VAC. It's commonly used to protect HVAC equipment, pumps, lighting circuits, machinery, distribution panels, and other three-phase branch circuits where dependable overcurrent protection is essential.