THQB2120 - 20A Circuit Breaker

THQB2120 - 20A Circuit Breaker

The THQB2120 is a 20-amp, 2-pole molded-case circuit breaker designed for dependable branch-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 provides secure panelboard mounting while helping protect electrical equipment and wiring from overloads and short circuits. Rated for 120/240VAC applications with a 10kA interrupting capacity, the THQB2120 is engineered to deliver consistent performance in demanding environments where reliable circuit protection is essential. Its compact footprint allows for efficient installation in compatible panelboards without sacrificing protection. The breaker is also HACR rated, making it suitable for heating, air conditioning, and refrigeration equipment applications where dependable overcurrent protection is required. Whether you use it in new installations, maintenance projects, or electrical system upgrades, the THQB2120 offers a practical solution for maintaining electrical system safety and operational continuity.

Key Features and Benefits

• 20 Amp current rating: for branch circuit protection
• 2-pole configuration: for 120/240VAC electrical systems
• 10kA interrupting capacity (A.I.C.): for fault current protection
• THQB series design: for compatibility with designated Q-Line panelboards
• Bolt-on mounting: provides a secure and stable installation
• HACR rated: for heating, air conditioning, and refrigeration equipment applications
• Molded case construction: is designed for long-term durability and reliable operation
• Protects conductors, equipment, and loads: from overloads and short circuits
• Compact design: supports efficient use of panel space

Technical Specifications

• Part Number: THQB2120
• Type: THQB
• Circuit Breaker Style: Molded Case Circuit Breaker
• Series: Q-Line
• Mounting Type: Bolt-On
• Poles: 2
• Amperage Rating: 20 Amps
• Voltage Rating: 120/240VAC
• Interrupting Capacity: 10kA
• HACR Rated: Yes
• Height: 3.5 in.
• Width: 2.0 in.
• Depth: 2.81 in.

Material Compliance and Certifications

• Industry Standards: The THQB2120 is manufactured and tested to meet applicable industry standards for molded case circuit breakers. Its HACR rating confirms suitability for approved heating, ventilation, air conditioning, and refrigeration applications. Compliance and certification requirements should always be verified against the specific installation, equipment, and local electrical code requirements.

Where It Works Best

• Commercial buildings and office facilities
• Industrial control and power distribution systems
• Residential electrical service and subpanel installations
• HVAC and refrigeration equipment circuits
• Facility maintenance and electrical retrofit projects
• Equipment protection within compatible Q-Line panelboards
• For electrical systems requiring a 20-amp, 2-pole bolt-on circuit breaker, the THQB2120 provides dependable overcurrent protection, secure installation, and trusted performance across a variety of applications.