QBHW3045H - 45Amp Circuit Breaker

QBHW3045H - 45Amp Circuit Breaker

The QBHW3045H is a 3-pole, 45 amp bolt-on thermal magnetic circuit breaker engineered to provide dependable overcurrent and short-circuit protection in commercial and industrial electrical distribution systems. Designed as a QBHW series Quicklag HACR-rated breaker, this unit features a 22kA interrupting capacity at 240VAC, making it well-suited for applications where higher fault current protection is required. Its bolt-on mounting design helps create a secure electrical connection while supporting long-term system reliability. Built for operation in 40°C ambient environments, the QBHW3045H combines consistent performance with the durability professionals expect when maintaining or upgrading electrical panels. Whether you're replacing an existing breaker or completing a new installation, this thermal magnetic circuit breaker helps safeguard connected equipment while supporting safe, efficient power distribution.

Key Features and Benefits

• 45-amp current rating provides reliable overcurrent protection for medium-capacity electrical circuits.
• 3-Pole  configuration designed to protect three-phase electrical systems with coordinated circuit interruption.
• Bolt-On Mounting delivers a secure installation that helps minimize movement and maintain dependable electrical contact.
• The Thermal Magnetic Trip Mechanism offers protection against both prolonged overloads and instantaneous short circuits, enhancing system safety.
• 22kA Interrupting Rating at 240VAC suitable for applications requiring increased fault current protection.
• Quicklag (QBHW) Design engineered for compatibility with panels designed for QBHW bolt-on circuit breakers.
• HACR rated and approved for use in heating, air conditioning, and refrigeration equipment where applicable.
• 40°C ambient rating, designed to perform reliably in elevated ambient-temperature environments commonly found in electrical equipment rooms.
  

Technical Specifications

• Part Number: QBHW3045H
  
• Type: QBHW
  
• Circuit Breaker Style: Bolt-On Thermal Magnetic
  
• Poles: 3
  
• Current Rating: 45 Amps
  
• Voltage Rating: 240 VAC
  
• Interrupting Capacity: 22kA @ 240VAC
  
• 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

• The QBHW3045H is designed for use in electrical distribution systems requiring dependable overcurrent protection and is HACR-rated for qualifying heating, ventilation, air conditioning, and refrigeration applications. Its thermal magnetic trip technology provides responsive protection against overloads and short circuits, helping support electrical system safety and equipment longevity. Install and use this circuit breaker in accordance with applicable electrical codes, equipment manufacturer recommendations, and local regulations.
  

Where It Works Best

• The QBHW3045H is an excellent choice for commercial, industrial, and institutional electrical systems where reliable three-phase circuit protection is essential. It is commonly used in panelboards and distribution equipment serving HVAC systems, mechanical equipment, lighting circuits, motors, pumps, compressors, and other branch circuits requiring a 45 amp, 3-pole bolt-on circuit breaker with a 22kA interrupting rating at 240VAC. Its secure bolt-on design and HACR rating make it especially well-suited for facilities where dependable performance and consistent electrical protection are critical to daily operations.