QBHW2050S - 50 Amp Circuit Breaker

QBHW2050S - 50 Amp Circuit Breaker

The QBHW2050S is a 50-amp, 2-pole thermal magnetic circuit breaker with a bolt-on connection. It is rated 22kA at 120/240VAC and includes a 120V AC shunt trip device. That shunt trip is an important detail on this particular breaker. When connected to the proper control circuit, it allows the breaker to be tripped electrically from a remote location. The QBHW2050S is also HACR rated and has a 40°C rating. Its dimensions are 3.41 inches high, 3.0 inches wide, and 2.92 inches deep. If you're replacing a breaker already in service, take a minute to compare more than the amp rating. Check the complete part number, number of poles, voltage, A.I.C. rating, bolt-on style, shunt trip voltage, and dimensions. Breakers that look similar aren't necessarily interchangeable.

Key Features and Benefits

• 50-amp rating for equipment and circuits designed for a 50-amp breaker.
• 2-pole configuration for applications requiring two-pole protection.
• 22kA A.I.C. at 120/240VAC provides the specified interrupting capacity for this breaker.
• Thermal magnetic protection responds to overload and short-circuit conditions.
• Bolt-on design provides a secure connection in compatible equipment.
• 120V AC shunt trip allows electrical tripping through an appropriate remote control circuit.
• HACR rated for compatible heating, air-conditioning, and refrigeration applications where this rating is required.
• 40°C rating as specified for this model.

Technical Specifications

• Part Number: QBHW2050S
  
• Type: QBHW
  
• Amperage: 50A
  
• Poles: 2
  
• Voltage: 120/240VAC
  
• A.I.C. Rating: 22kA @ 120/240VAC
  
• Breaker Operation: Thermal Magnetic
  
• Mounting Style: Bolt-On
  
• Shunt Trip Device: 120V AC
  
• HACR Rated: Yes
  
• Temperature Rating: 40°C
  
• Dimensions:
  • Height: 3.41 in.
  • Width: 3.0 in.
  • Depth: 2.92 in.

Material Compliance and Certifications

• Available specifications identify the QBHW2050S as HACR rated and give it a 40°C rating. No other certification or material-compliance information was provided for this breaker. When a particular approval or certification is required for a job, verify the markings on the breaker and the applicable manufacturer documentation.

Where It Works Best

• The QBHW2050S circuit breaker is intended for compatible electrical equipment that requires a 50A, 2-pole, bolt-on QBHW breaker rated for 120/240VAC with a 22kA A.I.C. rating. The 120V AC shunt trip makes this model especially useful when the application calls for the breaker to be tripped by a separate electrical signal. Its HACR rating can also make it suitable for compatible heating, air-conditioning, and refrigeration equipment when the system specifies an HACR-rated breaker.
  For replacement work, the safest approach is to match the actual specifications rather than relying on appearance. Confirm QBHW2050S, 50 amps, two poles, 120/240VAC, 22kA A.I.C., bolt-on mounting, and the 120V AC shunt trip against the requirements of the equipment where the breaker will be installed.