QBHW2040 - 40 Amp Circuit Breaker

QBHW2040 - 40 Amp Circuit Breaker

If you're looking for a QBHW2040 circuit breaker, getting the specifications right matters. This 40-amp, 2-pole breaker is a Type QBHW Quicklag model with a bolt-on connection and thermal magnetic protection. It's rated for 120/240VAC with a 22 kAIC interrupting rating, giving you the electrical characteristics needed for a range of compatible commercial and industrial applications. The thermal magnetic design protects against both overload and short-circuit conditions, while the bolt-on configuration provides a secure connection in equipment designed for this breaker type. The QBHW2040 is also HACR rated, so it can be used in properly specified heating, air-conditioning, and refrigeration applications. With a 40°C rating and compact dimensions of 3.41 inches high by 2 inches wide by 2.92 inches deep, it's a practical choice when your equipment calls for these specific QBHW ratings. Before installation, it's always worth checking the part number, amperage, voltage, poles, AIC rating, and mounting style against the requirements of your existing equipment.

Key Features and Benefits

• 40 amp, 2-pole design for compatible two-pole circuit applications.
• Rated for 120/240VAC operation.
• 22 kAIC rating provides the specified fault-current interrupting capacity.
• Thermal magnetic protection responds to overloads as well as short-circuit conditions.
• Bolt-on mounting provides a secure connection in compatible electrical equipment.
• HACR rated for properly specified heating, air-conditioning, and refrigeration applications.
• 40°C rated for its specified operating conditions.
• Compact size makes it easy to match against existing equipment where space and breaker configuration matter.

Technical Specifications

• Part Number: QBHW2040
  
• Type: QBHW
  
• Breaker Type: Quicklag Thermal Magnetic
  
• Amperage: 40A
  
• Number of Poles: 2
  
• Voltage: 120/240VAC
  
• AIC Rating: 22 kAIC
  
• Connection: Bolt-On
  
• HACR Rated: Yes
  
• Temperature Rating: 40°C
  
• Dimensions:
  • Height: 3.41 in.
  • Width: 2.00 in.
  • Depth: 2.92 in.

Material Compliance and Certifications

• The QBHW2040 is UL Listed and CSA Certified and is also identified as HACR rated. These certifications and ratings are important when you're matching a breaker to an existing electrical application.
• Breaker compatibility shouldn't be determined by appearance alone. Check the electrical ratings and equipment requirements before installation, and follow applicable electrical codes and manufacturer guidelines.

Where It Works Best

• The QBHW2040 40 amp 2-pole circuit breaker works best in compatible electrical distribution applications that specifically require a Type QBHW bolt-on breaker. It's well suited to commercial and industrial electrical systems, as well as qualifying HVAC and refrigeration applications where its HACR rating is required.
  
  This breaker is especially relevant when you need the combination of 40 amps, two poles, 120/240VAC, a 22 kAIC interrupting rating, and thermal magnetic protection. Rather than choosing a breaker simply because it has the same amperage or looks similar, compare the complete specifications. Matching the breaker type, voltage, poles, interrupting rating, and connection style helps ensure the QBHW2040 is appropriate for the equipment you're working with.