QBHW2040S - 40 Amp Circuit Breaker

QBHW2040S - 40 Amp Circuit Breaker

When you're replacing a circuit breaker, getting the details right matters. The QBHW2040S circuit breaker is a 40-amp, 2-pole, bolt-on thermal magnetic breaker designed for compatible electrical distribution equipment. It carries a 22k AIC rating at 120/240VAC and includes a 120V AC shunt trip device, giving you the ability to remotely trip the breaker when used as part of an appropriately designed control or safety system. It's also Quicklag HACR rated, making it suitable for compatible heating, air-conditioning, and refrigeration applications. Measuring 3.41 inches high, 3.00 inches wide, and 2.92 inches deep, the QBHW2040S packs its circuit-protection capabilities into a compact footprint. Whether you're replacing an existing breaker or matching components for a maintenance project, this is one of those parts where the exact specifications count. Check the QBHW type, 40A rating, two-pole configuration, 120/240VAC rating, 22kA interrupting capacity, bolt-on connection, and 120V AC shunt trip against your equipment requirements before installation.

Key Features and Benefits

• 40-amp, 2-pole protection designed for applications requiring a 40A, two-pole circuit breaker.
• 22kA interrupting rating 22k AIC at 120/240VAC for the specified application.
• Thermal-magnetic operation provides a thermal response to overload conditions and a magnetic response to high-current fault conditions.
• 120V AC shunt trip, need remote-tripping capability? The integrated shunt trip allows the breaker to be electrically tripped when connected to a properly designed 120V AC control circuit.
• Bolt-on connection creates a secure connection in compatible electrical distribution equipment.
• Quicklag HACR-rated, suitable for compatible heating, air-conditioning, and refrigeration applications requiring an HACR-rated breaker.
• Specified with a 40°C temperature rating.
• At only 3.41" H × 3.00" W × 2.92" D, its dimensions are easy to compare against an existing breaker or equipment specification.

Technical Specifications

• Part Number: QBHW2040S
  
• Type: QBHW
  
• Breaker Type: Bolt-On Thermal Magnetic
  
• Amperage: 40A
  
• Poles: 2
  
• Voltage: 120/240VAC
  
• AIC Rating: 22kA @ 120/240VAC
  
• Shunt Trip: 120V AC
  
• HACR Rating: Quicklag HACR Rated
  
• Temperature Rating: 40°C
  
• Dimensions:
  • Height: 3.41 in.
  • Width: 3.00 in.
  • Depth: 2.92 in.

Material Compliance and Certifications

• The supplied product specifications identify the QBHW2040S as Quicklag HACR rated and specify a 40°C rating. Additional certifications or material-compliance declarations, including specific UL, RoHS, or REACH information, were not included in the provided specifications. Rather than make assumptions about safety or compliance credentials, those requirements should be verified against applicable manufacturer documentation and the requirements of the installation.

Where It Works Best

• The QBHW2040S 40 Amp circuit breaker is a strong fit when the job calls for a 2-pole QBHW bolt-on thermal magnetic breaker with a 120V AC shunt trip. It can be particularly useful in compatible commercial, industrial, HVAC, refrigeration, and electrical distribution applications where remote breaker tripping is part of the system design.