THHQB1120GF - 20Amp Circuit Breaker

THHQB1120GF - 20 Amp Circuit Breaker

The THHQB1120GF is a 20-amp20-amp, 1-pole ground-fault circuit interrupter (GFCI) circuit breaker designed to provide dependable overcurrent protection while helping you to protect people and equipment from electrical hazards caused by ground faults. As part of the THHQB-GF Q-Line family, this bolt-on circuit breaker combines reliable circuit protection with integrated ground fault interruption, making it an excellent choice for applications where enhanced electrical safety is essential.

Built for use in compatible Q-Line panelboards, the THHQB1120GF features a 22kA interrupting capacity at 120VAC, enabling it to handle high fault-current conditions while maintaining circuit integrity. Its compact footprint helps you to simplify installation in electrical distribution systems where space is at a premium. In addition, the breaker is HACR-rated, making it suitable for heating, air conditioning, and refrigeration equipment applications that require dependable branch-circuit protection. Whether you use it in commercial facilities, industrial environments, or specialized electrical systems, this breaker delivers an added layer of protection against potentially dangerous ground fault conditions.

Key Features and Benefits

• Integrated Ground Fault Circuit Interruption (GFCI) Protection: Integrated Ground Fault Circuit Interruption (GFCI) protection.
• 20 Amp Current Rating: 20 Amp current rating for branch circuit applications.
• 1-Pole Design: 1-pole design for 120VAC systems.
• 22kA A.I.C. Rating: 22kA A.I.C. rating at 120VAC for high fault-current protection.
• Bolt-On Mounting: Bolt-on mounting provides a secure connection within compatible panelboards.
• Q-Line Family: Part of the trusted THHQB-GF Q-Line breaker family.
• HACR Rated: HACR rated for use with heating, air conditioning, and refrigeration equipment.
• Ground Fault Protection: Helps reduce the risk of electrical shock caused by ground faults.
• Compact Design: Compact design supports efficient use of panel space.
  

Technical Specifications

• Part Number: THHQB1120GF
  
• Type: THHQB-GF
  
• Poles: 1
  
• Amperage Rating: 20A
  
• Voltage Rating: 120VAC
  
• Interrupting Capacity (A.I.C.): 22kA @ 120VAC
  
• Mounting Style: Bolt-On
  
• Series: Q-Line
  
• Protection Type: Ground Fault Circuit Interruption (GFCI)
  
• HACR Rated: Yes
  
• Dimensions:
  • Height: 3.5 in.
  • Width: 1.0 in.
  • Depth: 2.81 in.

Material Compliance and Certifications

• HACR Rated: HACR Rated for approved HVAC and refrigeration applications.
• Industry Standards: Manufactured to meet applicable industry standards for molded case circuit breakers and ground fault protection devices.
• Compatible Equipment: Designed for installation in compatible Q-Line electrical distribution equipment.
• Protection Performance: Engineered to provide both overcurrent protection and ground fault interruption in accordance with applicable electrical system requirements.
  

Where It Works Best

• The THHQB1120GF is well-suited for electrical systems requiring both branch-circuit and ground-fault protection. Common applications include commercial buildings, office facilities, retail environments, light industrial installations, HVAC equipment circuits, maintenance areas, utility rooms, and other locations where personnel safety and ground fault protection are important considerations. Its bolt-on construction and high interrupting rating make it a practical choice for demanding electrical distribution environments where dependable performance is critical.