QBHW3040H - 40Amp Circuit Breaker

QBHW3040H - 40Amp Circuit Breaker

The QBHW3040H is a 3-pole, 40-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 applications requiring a 22kA interrupting rating at 240VAC, this breaker helps you protect electrical equipment and branch circuits while supporting safe, reliable system operation. Its bolt-on mounting design creates a secure connection to compatible panelboards, making it well-suited for installations where stability and long-term performance are essential. Rated for operation in 40°C ambient environments and featuring Quicklag construction with an HACR rating, the QBHW3040H is an excellent choice for protecting HVAC equipment, motors, lighting, and other demanding electrical loads. The thermal magnetic trip mechanism delivers responsive protection against both prolonged overload conditions and instantaneous short circuits, helping you reduce the risk of equipment damage and unnecessary downtime.

Key Features and Benefits

• 40 Amp Current Rating for protecting medium-capacity branch circuits and electrical equipment.
• 3-Pole Configuration designed for three-phase electrical distribution systems.
• Bolt-On Mounting provides a secure installation that helps maintain reliable electrical connections.
• Thermal Magnetic Trip Unit delivers dependable protection against overloads and short circuits.
• 22 kA interrupting capacity at 240 VAC helps safeguard electrical systems during high-fault-current events.
• Quicklag Design supports consistent performance in compatible electrical systems.
• HACR Rated for applications involving heating, air conditioning, and refrigeration equipment.
• 40°C Ambient Rating allows reliable operation in standard commercial and industrial environments.
  

Technical Specifications

• Part Number: QBHW3040H
  
• Type: QBHW
  
• Poles: 3
  
• Amperage: 40A
  
• Voltage Rating: 240VAC
  
• Interrupting Capacity (A.I.C.): 22kA @ 240VAC
  
• Trip Type: Thermal Magnetic
  
• Mounting Style: Bolt-On
  
• HACR Rated: Yes
  
• Ambient Temperature Rating: 40°C
  
• Dimensions:
  • Height: 3.41 in.
  • Width: 3.00 in.
  • Depth: 2.92 in.

Material Compliance and Certifications

• Thermal magnetic circuit breaker construction designed for dependable overcurrent protection.
• HACR rated for compatible heating, air conditioning, and refrigeration applications.
• Manufactured for use in compatible electrical distribution equipment and installed according to applicable electrical codes and manufacturer requirements.
• Installation should be performed by a qualified electrician to help ensure proper fit, performance, and code compliance.
  

Where It Works Best

• The QBHW3040H is well-suited for a variety of commercial, industrial, and institutional electrical systems requiring reliable three-phase circuit protection. It is commonly used in panelboards serving HVAC equipment, air conditioning systems, refrigeration units, motor loads, lighting circuits, machinery, and general power distribution. Its combination of a 40A rating, 22kA interrupting capacity, bolt-on installation, and HACR certification makes it an excellent option for applications where dependable circuit protection and consistent electrical performance are essential.