THQB1120GF - 20Amp Circuit Breaker

THQB1120GF - 20 Amp Circuit Breaker

The THQB1120GF is a 1-pole, 20-amp ground fault circuit interrupter (GFCI) circuit breaker designed for you to use in compatible Q-Line bolt-on panelboards. Built to provide both circuit protection and ground fault protection in a single device, this breaker helps detect ground fault conditions and interrupts power when necessary to support electrical safety requirements. With a 10kA interrupting capacity at 120VAC, the THQB1120GF is suited for branch circuit applications where ground fault protection is required.

As part of the THQB series, this breaker features a bolt-on mounting design that provides a secure connection within approved panelboard systems. The unit is also HACR rated, making it suitable for heating, air conditioning, and refrigeration equipment applications where permitted. Designed for dependable operation and long service life, the THQB1120GF is commonly used in commercial, industrial, and institutional electrical distribution systems that require a compatible Q-Line ground fault protection solution.

Key Features and Benefits

• 20-amp current rating: For branch circuit protection.
• Single-pole design: For 120VAC applications.
• Integrated Ground Fault Circuit Interruption (GFCI) protection: Built into the breaker assembly.
• Bolt-on mounting configuration: For compatible Q-Line panelboards.
• 10kA interrupting capacity: Rated at 120VAC.
• HACR rated: For approved HVAC and refrigeration applications.
• Ground fault detection: Helps protect electrical systems by detecting ground fault conditions.
• Compact design: Simplifies installation in designated panelboard spaces.
• Built for durability: Designed for long-term durability and dependable operation.
• Compatibility focused: Designed for form, fit, and functional compatibility within applicable legacy and existing electrical systems.
  

Technical Specifications

• Part Number: THQB1120GF
  
• Type: THQB
  
• Poles: 1
  
• Amperage: 20A
  
• Voltage Rating: 120VAC
  
• Interrupting Capacity (A.I.C.): 10kA @ 120VAC
  
• Protection Type: Ground Fault Circuit Interruption (GFCI)
  
• Mounting Style: Bolt-On
  
• Product Line: Q-Line
  
• HACR Rated: Yes
  
• Dimensions:
  • Height: 3.5 in.
  • Width: 1.0 in.
  • Depth: 2.81 in.

Material Compliance and Certifications

• HACR Rated: HACR Rated.
• Industry Standards: Manufactured and tested to applicable industry standards for the product category.
• Equipment Compatibility: Designed for use in compatible Q-Line electrical distribution equipment.
• Integrated Protection: Ground fault protection functionality is integrated within the circuit breaker assembly.
  

Where It Works Best

• The THQB1120GF is well-suited for electrical systems requiring both overcurrent protection and ground fault protection in a single device. Typical applications include commercial buildings, industrial facilities, educational institutions, healthcare facilities, office buildings, HVAC and refrigeration equipment circuits, branch circuits requiring GFCI protection, and compatible Q-Line panelboard installations. When installed in approved equipment and according to applicable electrical codes, the THQB1120GF provides a practical solution for maintaining protection and compatibility within existing electrical distribution systems.