THQB32030ST1 - 30Amp Circuit Breaker

THQB32030ST1 - 30 Amp Circuit Breaker

The THQB32030ST1 is a 30-amp, 3-pole bolt-on circuit breaker equipped with a 120VAC shunt trip for your applications that require remote tripping capability. As part of the THQB Q-Line series, it is commonly used in commercial and industrial electrical systems where three-phase circuit protection and controlled shutdown functions are needed.

This breaker provides overcurrent protection while also allowing the circuit to be opened remotely through an external control signal. That makes it a practical choice for emergency stop systems, safety interlocks, building automation controls, and other installations where power may need to be disconnected without manually operating the breaker.

Rated 10kA at 240VAC, the THQB32030ST1 is suitable for a variety of distribution and equipment protection applications. The bolt-on mounting configuration provides a secure connection within compatible panelboards, and its HACR rating allows use in heating, ventilation, air conditioning, and refrigeration systems.

Key Features and Benefits

• 30-amp current rating
• 3-pole configuration for three-phase circuits
• Factory-installed 120VAC shunt trip
• Bolt-on mounting design
• 10kA interrupting rating at 240VAC
• HACR rated
• Part of the THQB Q-Line circuit breaker family
• Molded case construction

Technical Specifications

• Part Number: THQB32030ST1
  
• Type: THQB
  
• Poles: 3
  
• Amperage: 30A
  
• Voltage Rating: 240VAC
  
• Interrupting Rating: 10kA @ 240VAC
  
• Shunt Trip Voltage: 120VAC
  
• Mounting: Bolt-On
  
• Construction: Molded Case Circuit Breaker
  
• HACR Rated: Yes
  
• Dimensions:
  • Height: 3.5 in.
  • Width: 4.0 in.
  • Depth: 2.81 in.

Material Compliance and Certifications

• HACR rated for HVAC and refrigeration applications
• Manufactured for use in compatible electrical distribution equipment
• Molded case circuit breaker construction

Where It Works Best

• The THQB32030ST1 is often found in commercial facilities, manufacturing plants, schools, office buildings, and other locations that use three-phase power systems. The built-in shunt trip makes it particularly useful where remote shutdown capability is required, including safety systems, equipment controls, and building management applications.