THQB2145 - 45A Circuit Breaker

THQB2145 - 45A Circuit Breaker

The THQB2145 is a 45-amp, 2-pole molded case circuit breaker designed to provide dependable overcurrent and short-circuit protection in your commercial, industrial, and residential electrical distribution systems. As part of the trusted THQB Q-Line series, this bolt-on circuit breaker offers a secure panelboard connection that helps maintain electrical system stability while minimizing downtime caused by overloads or fault conditions. Featuring a 10kA interrupting capacity at 120/240VAC, the THQB2145 is built for applications that demand reliable circuit protection and consistent performance. Its compact design allows for efficient installation in compatible panelboards, making it a practical choice for both new construction projects and maintenance upgrades. Whether you're protecting branch circuits, HVAC equipment, lighting systems, or general power distribution, the THQB2145 delivers the safety and performance professionals expect from a high-quality molded case circuit breaker. Its HACR rating further supports use in heating, air conditioning, and refrigeration applications where dependable circuit protection is essential.

Key Features and Benefits

• 45 amp current rating: For medium-capacity electrical circuits.
• 2-pole configuration: For 120/240VAC applications.
• 10kA interrupting capacity: For effective fault current protection.
• Bolt-on mounting design: Provides a secure and stable connection.
• Part of the THQB Q-Line family: For compatibility with designated panelboards.
• HACR rated: For heating, air conditioning, and refrigeration equipment applications.
• Molded case construction: Helps protect internal components and enhances durability.
• Compact footprint: Simplifies installation and panel space management.
• Designed to help reduce the risk of equipment damage: Caused by overloads and short circuits.
  

Technical Specifications

• Part Number: THQB2145
  
• Type: THQB
  
• Circuit Breaker Style: Molded Case Circuit Breaker
  
• Mounting Type: Bolt-On
  
• Poles: 2
  
• Amperage Rating: 45 Amps
  
• Voltage Rating: 120/240VAC
  
• Interrupting Capacity: 10kA
  
• HACR Rated: Yes
  
• Product Series: Q-Line
  
• Dimensions:
  • Height: 3.5 in.
  • Width: 2.0 in.
  • Depth: 2.81 in.

Material Compliance and Certifications

• HACR Rated: The THQB2145 is manufactured as a molded case circuit breaker intended for use in electrical distribution systems requiring reliable overcurrent protection. The breaker is HACR rated, supporting applications involving heating, ventilation, air conditioning, and refrigeration equipment.
• Installation Requirements: Users should verify all applicable code requirements, installation standards, and system compatibility before installation.
  

Where It Works Best

• Commercial buildings and office facilities
• Industrial control panels and equipment protection
• HVAC and refrigeration systems
• Retail stores and light commercial environments
• Residential service and distribution panel upgrades
• Lighting and branch circuit protection
• General-purpose power distribution systems requiring a 45-amp, 2-pole breaker
• With its bolt-on design, HACR rating, and dependable fault protection capabilities, the THQB2145 is a strong choice for maintaining safe and efficient operation across a wide range of electrical systems.