THQB32045 - 45Amp Circuit Breaker

THQB32045 - 45 Amp Circuit Breaker

The THQB32045 is a 45-amp, 3-pole bolt-on circuit breaker used to protect your electrical systems from overloads and short circuits. Part of the Q-Line family, this molded case breaker is commonly installed in commercial and industrial panelboards where three-phase power distribution is required.

With a 10kA interrupting rating at 240VAC, the THQB32045 is built to handle fault conditions while helping you to protect connected equipment and wiring. Its bolt-on design creates a secure connection to the panel, making it a practical choice for applications where stability and long-term reliability matter. The breaker is also HACR rated, making it suitable for use with heating, air conditioning, and refrigeration equipment.

Whether you're maintaining an existing electrical distribution system or replacing a breaker in compatible equipment, the THQB32045 delivers the circuit protection needed for a wide range of commercial and industrial applications.

Key Features and Benefits

• 45 amp current rating: 45 amp current rating.
• 3-pole configuration: 3-pole configuration for three-phase systems.
• Bolt-on mounting: Bolt-on mounting for a secure panel connection.
• Interrupting Capacity: 10kA interrupting capacity at 240VAC.
• HACR Rated: HACR rated for HVAC and refrigeration applications.
• Molded Case Construction: Molded case construction.
• Q-Line Compatibility: Compatible with Q-Line panelboard systems.

Technical Specifications

• Part Number: THQB32045
• Type: THQB
• Series: Q-Line
• Amperage: 45A
• Poles: 3
• Voltage Rating: 240VAC
• Interrupting Rating: 10kA @ 240VAC
• Mounting Style: Bolt-On
• Construction: Molded Case Circuit Breaker
• HACR Rated: Yes
• Dimensions:
  • Height: 3.5 in.
  • Width: 3.0 in.
  • Depth: 2.81 in.

Material Compliance and Certifications

• HACR Rated: HACR Rated.
• Industry Standards: Manufactured to applicable industry standards for molded case circuit breakers.
• Installation Compatibility: Suitable for installation in compatible electrical distribution equipment.

Where It Works Best

• The THQB32045 is commonly used in commercial buildings, industrial facilities, HVAC equipment, motor loads, and three-phase power distribution systems that require a 45-amp bolt-on circuit breaker. It is a good fit for panelboard applications where dependable overcurrent protection and secure mounting are required.