THHQB1120 - 20Amp Circuit Breaker

THHQB1120 - 20 Amp Circuit Breaker

The THHQB1120 is a dependable 20-amp, 1-pole molded-case circuit breaker designed for use in your Q-Line panelboard systems where reliable branch-circuit protection is essential. Built with a bolt-on mounting design, this breaker provides a secure connection that helps you reduce the possibility of loose electrical connections in commercial, industrial, and institutional applications. Rated for 120VAC operation with an impressive 22kA interrupting capacity, the THHQB1120 is engineered to help protect electrical systems and connected equipment from overloads and short circuits. Its compact footprint makes installation efficient while maintaining the performance and durability expected in demanding electrical environments. Additionally, this breaker is HACR rated, making it suitable for heating, air conditioning, and refrigeration equipment applications where dependable circuit protection is critical.

Key Features and Benefits

• 20 Amp Current Rating: 20 Amp current rating for branch circuit protection.
• Single-Pole Configuration: Single-pole configuration for 120VAC applications.
• High Interrupting Capacity: High 22kA interrupting capacity (A.I.C.) for enhanced fault protection.
• Bolt-On Design: Bolt-on design provides a secure, stable installation.
• Q-Line Compatibility: Compatible with Q-Line panelboard systems.
• Molded Case Construction: Molded case construction designed for long-term reliability.
• HACR Rated: HACR rated for heating, air conditioning, and refrigeration equipment.
• Compact Dimensions: Compact dimensions help simplify panel installation and maintenance.
• Circuit Protection: Protects electrical circuits from overloads and short-circuit conditions.
  

Technical Specifications

• Part Number: THHQB1120
  
• Type: THHQB
  
• Circuit Breaker Style: Molded Case Circuit Breaker
  
• Mounting: Bolt-On
  
• Poles: 1
  
• Amperage Rating: 20 Amps
  
• Voltage Rating: 120 VAC
  
• Interrupting Capacity: 22kA @ 120VAC
  
• HACR Rated: Yes
  
• Product Line: Q-Line
  
• Dimensions:
  • Height: 3.5 in.
  • Width: 1.0 in.
  • Depth: 2.81 in.

Material Compliance and Certifications

• Industry Standards: The THHQB1120 is manufactured to meet applicable industry standards for molded-case circuit breakers and is HACR-rated for use with heating, ventilation, air conditioning, and refrigeration equipment.
• Installation Requirements: Proper installation should always be performed in accordance with local electrical codes and the equipment manufacturer's specifications.
  

Where It Works Best

• The THHQB1120 is well-suited for commercial buildings, industrial facilities, institutional properties, and electrical distribution systems utilizing compatible Q-Line panelboards. Its bolt-on configuration and high interrupting rating make it an excellent choice for protecting branch circuits serving lighting, receptacles, HVAC equipment, control systems, and other critical electrical loads that require dependable overcurrent protection.