THQB32100ST1 - 100Amp Circuit Breaker

THQB32100ST1 - 100 Amp Circuit Breaker

The THQB32100ST1 is a 100-amp, 3-pole bolt-on molded case circuit breaker designed for dependable circuit protection in your commercial, industrial, and institutional electrical distribution systems. As part of the trusted THQB Q-Line series, this breaker combines reliable overcurrent protection with the added functionality of a 120VAC shunt trip, allowing remote tripping capability when integrated with emergency shutdown systems, fire alarm controls, or other safety circuits. Its bolt-on mounting design helps you provide a secure connection within compatible panelboards, while the compact footprint makes it well-suited for applications where space efficiency is important.

Built to handle demanding electrical environments, the THQB32100ST1 features a 10kA interrupting rating at 240VAC and is HACR rated, making it suitable for a wide range of HVAC and power distribution applications. Whether you're protecting branch circuits, equipment feeders, or critical electrical infrastructure, this circuit breaker delivers dependable performance while helping maintain system safety and uptime.

Key Features and Benefits

• 100 Amp Current Rating: For protection of higher-capacity electrical circuits.
• 3-Pole Configuration: Is designed for three-phase electrical systems.
• 120VAC Shunt Trip: Enables remote circuit breaker tripping for enhanced safety and control.
• Bolt-On Mounting Design: Helps ensure a secure installation within compatible panelboards.
• 10kA Interrupting Capacity at 240VAC: Assists in protecting equipment during fault conditions.
• HACR Rated: For use in heating, air conditioning, and refrigeration applications.
• Q-Line Series Construction: Is designed for reliable performance in commercial and industrial environments.
• Molded Case Design: Provides durable protection and long service life.
  

Technical Specifications

• Part Number: THQB32100ST1
  
• Type: THQB
  
• Circuit Breaker Style: Molded Case Circuit Breaker
  
• Mounting Method: Bolt-On
  
• Poles: 3
  
• Amperage Rating: 100 Amps
  
• Voltage Rating: 240VAC
  
• Interrupting Rating (A.I.C.): 10kA @ 240VAC
  
• Shunt Trip Voltage: 120VAC
  
• Series: Q-Line
  
• HACR Rated: Yes
  
• Dimensions:
  • Height: 3.5 in.
  • Width: 4.0 in.
  • Depth: 2.81 in.

Material Compliance and Certifications

• Industry Standards: The THQB32100ST1 is manufactured to meet applicable industry standards for molded case circuit breakers and is designed for use in electrical distribution systems requiring reliable overcurrent protection.
• HACR Rating: The breaker carries an HACR rating, supporting its use in HVAC-related applications.
• Installation Verification: Users should verify local code requirements and equipment compatibility prior to installation.
  

Where It Works Best

• The THQB32100ST1 is an excellent choice for a variety of commercial and industrial electrical systems requiring both overcurrent protection and remote tripping capability. Common applications include commercial buildings and office facilities, industrial control panels and machinery, manufacturing and processing facilities, HVAC equipment and refrigeration systems, emergency shutdown and life-safety systems, electrical distribution panelboards, and equipment feeder and branch circuit protection. Its combination of a 100-amp rating, three-pole protection, bolt-on installation, and integrated 120VAC shunt trip functionality makes it particularly valuable in systems where safety, control, and dependable circuit protection are essential.