THQB2140 - 40A Circuit Breaker

THQB2140 - 40A Circuit Breaker

The THQB2140 circuit breaker is a 40-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 family, this bolt-on breaker offers secure panelboard installation and consistent performance in applications requiring reliable branch circuit protection. With a 10kA interrupting capacity at 120/240VAC, the THQB2140 helps you to safeguard electrical equipment while supporting the safe operation of connected loads.

Built for demanding environments, the THQB2140 features a compact design that maximizes panel space without sacrificing performance. Its HACR rating makes it suitable for use with heating, air conditioning, and refrigeration equipment, while the bolt-on mounting configuration helps you to ensure a stable electrical connection. Whether used in panelboards, lighting systems, HVAC equipment, or power distribution applications, this circuit breaker delivers the protection and durability professionals expect.

Key Features and Benefits

• 40 Amp Current Rating: 40 Amp current rating for dependable circuit protection.
• 2-Pole Configuration: 2-pole configuration for 120/240VAC electrical systems.
• THQB Q-Line Design: THQB Q-Line design for compatibility with designated panelboard applications.
• Bolt-On Mounting Style: Bolt-on mounting style provides a secure and reliable installation.
• 10kA Interrupting Capacity: 10kA interrupting capacity (AIC) at 120/240VAC.
• HACR Rated: HACR rated for heating, air conditioning, and refrigeration applications.
• Molded Case Construction: Molded case construction is designed for long service life.
• Compact Footprint: Compact footprint helps optimize available panel space.
• Versatile Applications: Suitable for commercial, industrial, and residential electrical systems.
  

Technical Specifications

• Part Number: THQB2140
  
• Type: THQB
  
• Circuit Breaker Style: Molded Case Circuit Breaker
  
• Product Line: Q-Line
  
• Mounting Type: Bolt-On
  
• Poles: 2
  
• Amperage Rating: 40 Amps
  
• Voltage Rating: 120/240VAC
  
• Interrupting Capacity (AIC): 10kA
  
• HACR Rated: Yes
  
• Dimensions:
  • Height: 3.5 in.
  • Width: 2.0 in.
  • Depth: 2.81 in.

Material Compliance and Certifications

• Industry Standards: The THQB2140 is manufactured as a molded case circuit breaker designed to meet applicable industry standards for circuit protection and electrical safety.
• HACR Rating: Its HACR rating supports use in approved heating, air conditioning, and refrigeration applications.
• Installation Requirements: Always verify installation requirements and local electrical code compliance before use.
  

Where It Works Best

• The THQB2140 is well-suited for branch circuit protection in commercial buildings, industrial facilities, residential electrical systems, HVAC equipment, lighting panels, distribution panelboards, and general power distribution applications. Its bolt-on design and Q-Line compatibility make it an excellent choice where secure breaker mounting and dependable overcurrent protection are essential.