QBHW3040HS - 40Amp Circuit Breaker

QBHW3040HS - 40Amp Circuit Breaker

The QBHW3040HS is a 3-pole, 40-amp QBHW thermal-magnetic circuit breaker designed to provide dependable overcurrent and short-circuit protection for your commercial and industrial electrical distribution systems. Featuring a bolt-on mounting design, this breaker helps you create a secure electrical connection while minimizing the possibility of movement caused by vibration. The integrated 120V AC shunt trip device allows the breaker to be remotely tripped when connected to an external control circuit, making it an excellent choice for emergency shutdown systems, fire safety applications, and automated building controls. Built for operation in 40°C ambient environments and carrying an HACR rating, the QBHW3040HS is well suited for protecting HVAC equipment, panelboards, lighting systems, and a wide range of branch circuits. With a 22kA interrupting rating at 240VAC, it delivers reliable fault protection in demanding electrical installations while helping you maintain system safety and uptime.

Key Features and Benefits

• 40-amp current rating for dependable branch-circuit protection.
• 3-pole configuration for three-phase electrical systems.
• Bolt-on mounting provides a secure, stable installation.
• Thermal magnetic trip mechanism responds to both overloads and short circuits.
• Factory-installed 120V AC shunt trip enables remote breaker operation.
• 22kA A.I.C. rating at 240VAC for high fault current interruption capability.
• HACR rated for use with heating, air conditioning, and refrigeration equipment.
• Designed for operation in 40°C ambient temperatures.
• Compact design fits compatible QBHW panelboards and electrical equipment.
  

Technical Specifications

• Part Number: QBHW3040HS
  
• Type: QBHW
  
• Poles: 3
  
• Amperage: 40 Amps
  
• Voltage Rating: 240VAC
  
• Interrupting Rating (A.I.C.): 22kA @ 240VAC
  
• Trip Unit: Thermal Magnetic
  
• Mounting Style: Bolt-On
  
• Shunt Trip: 120V AC
  
• HACR Rated: Yes
  
• Ambient Temperature Rating: 40°C
  
• Dimensions:
  • Height: 3.41 in.
  • Width: 4.00 in.
  • Depth: 2.92 in.

Material Compliance and Certifications

• The QBHW3040HS is designed for use in compatible electrical distribution systems and is HACR-rated, making it suitable for heating, air conditioning, and refrigeration applications. It is designed to meet applicable industry performance standards for thermal magnetic circuit protection and should always be installed and maintained in accordance with local electrical codes and the equipment manufacturer's specifications.
  

Where It Works Best

• The QBHW3040HS is an excellent choice for commercial, industrial, and institutional facilities that require dependable circuit protection along with remote trip functionality. Its integrated 120V AC shunt trip makes it particularly well-suited for emergency power disconnect systems, fire alarm interfaces, access control systems, building automation, HVAC equipment, motor loads, lighting distribution, and panelboards where remote operation enhances safety and operational control. Its combination of bolt-on installation, thermal magnetic protection, and high interrupting capacity makes it a dependable solution for demanding electrical environments.