QB40 - 40 Amp Circuit Breaker

QB40 - 40 Amp Circuit Breaker

The QB40 40 Amp Circuit Breaker is built for professionals who need dependable electrical protection without complications. Designed to help safeguard branch circuits from overloads and short circuits, this single-pole breaker delivers steady performance in demanding commercial and industrial environments. It’s a solid choice for electricians, maintenance teams, and facility managers who value consistent operation, straightforward installation, and confidence that their electrical systems are properly protected. With a proven design and durable construction, the QB40 fits seamlessly into existing bolt-on breaker panels, making it a practical solution for upgrades, repairs, and routine maintenance.

Key Features and Benefits

• Dependable Circuit Protection: Rated at 40 amps, this breaker helps protect electrical systems from overloads and short circuits, reducing the risk of damage and unexpected downtime.
• Built for Daily Use: Made to handle tough working conditions, the QB40 is designed to stand up to frequent operation in commercial and industrial settings.
• Simple Single-Pole Design: The one-pole configuration allows for quicker installation and easy integration into compatible panels.
• Consistent Performance: Designed to meet recognized industry expectations, providing confidence that your system remains safe and compliant.

Technical Specifications

• Frame Type: QB
  
• Number of Poles: 1 (Single-Pole)
  
• Amperage Rating: 40 Amp
  
• Interrupting Capacity: 10 kA at 120 VAC
  
• Mounting Style: Bolt-On
  
• Dimensions:
  • Width: 0.75 in
  • Length: 4.81 in
  • Depth: 2.50 in
• Weight: 1.75 lbs
  

Material Compliance and Certifications

• The QB40 circuit breaker is manufactured using quality materials selected to meet established electrical safety and performance standards.
• It is designed to comply with applicable industry regulations, supporting code-compliant installations and helping maintain safe operating conditions in electrical systems.

Where It Works Best

• This circuit breaker is well suited for commercial buildings, industrial facilities, warehouses, and maintenance operations where reliable branch circuit protection is required.
• It’s especially useful when servicing or upgrading existing electrical panels that use bolt-on breakers, allowing you to maintain system integrity without major modifications.