QBHW2045 - 45 Amp Circuit Breaker

QBHW2045 - 45 Amp Circuit Breaker

The QBHW2045 circuit breaker is a 45-amp, 2-pole bolt-on thermal magnetic circuit breaker designed for dependable circuit protection in compatible electrical distribution equipment. Part of the QBHW / Quicklag family, this breaker carries a 22kA I.A.C. rating at 120/240VAC and is HACR-rated, making it well-suited to applications where the specified electrical system calls for these ratings and characteristics. Its thermal-magnetic trip mechanism protects against both sustained overload conditions and short circuits, while the bolt-on configuration ensures a secure connection in compatible equipment. Rated at 40°C, the QBHW2045 combines a 45-amp rating with a compact 3.41-inch height, 2.0-inch width, and 2.92-inch depth. Whether you're replacing a breaker with matching specifications or selecting circuit protection for compatible equipment, the QBHW2045 gives electricians, maintenance teams, and facility professionals a practical solution backed by clearly defined electrical ratings.

Key Features and Benefits

• Provides circuit protection for applications requiring a 45A breaker.
• Designed for compatible two-pole electrical circuits and distribution equipment.
• Offers a 22,000-amp interrupting capacity at the specified 120/240VAC rating.
• Responds to sustained overloads and high-current short-circuit conditions through thermal and magnetic trip functions.
• Creates a secure mechanical and electrical connection when installed in compatible equipment.
• Identified as a Type QBHW breaker for straightforward specification matching.
• Suitable for applications requiring an HACR-rated circuit breaker when all other system requirements are met.
• Specified for a 40°C temperature rating.
• Measures just 3.41 inches high by 2.0 inches wide by 2.92 inches deep.

Technical Specifications

• Part Number: QBHW2045
  
• Type: QBHW
  
• Breaker Type: Bolt-On Thermal Magnetic Circuit Breaker
  
• Poles: 2
  
• Amperage: 45A
  
• A.I.C. Rating: 22kA
  
• Voltage Rating: 120/240VAC
  
• Temperature Rating: 40°C
  
• HACR Rated: Yes
  
• Dimensions:
  • Height: 3.41 in.
  • Width: 2.0 in.
  • Depth: 2.92 in.

Material Compliance and Certifications

• The available specifications identify the QBHW2045 as HACR rated and specify a 40°C rating. No additional material-compliance designations or third-party certifications have been provided for this particular breaker. For applications requiring specific regulatory, environmental, listing, or material-compliance documentation, those requirements should be confirmed against the product label and applicable manufacturer documentation before installation.

Where It Works Best

• The QBHW2045 45A 2-pole circuit breaker is best suited for compatible electrical distribution equipment requiring a Type QBHW bolt-on breaker with a 45-amp, 2-pole configuration and 22kA interrupting rating at 120/240VAC. Its HACR rating can also make it appropriate for qualifying heating, air-conditioning, and refrigeration applications where an HACR-rated breaker with these electrical specifications is required. It can be a practical choice for electrical maintenance, equipment servicing, facility electrical systems, and replacement applications where the existing equipment specifications call for the QBHW2045 or an approved equivalent. Always verify breaker type, voltage, amperage, pole count, interrupting rating, mounting configuration, and equipment compatibility before installation.