THQL32020ST1 - 20Amp Circuit Breaker

THQL32020ST1 - 20 Amp Circuit Breaker

When your electrical system requires dependable circuit protection along with remote tripping capability, the THQL32020ST1 delivers both in a compact, easy-to-install package. This 20 amp, 3-pole molded case circuit breaker is part of the widely used Q-Line THQL series, making it a trusted solution for commercial, industrial, and HVAC applications where safety and operational control are equally important.

What sets this breaker apart is its built-in 120VAC shunt trip, allowing the breaker to be remotely tripped from an external control signal. This feature is especially valuable in emergency shutdown systems, fire safety applications, machinery controls, and facilities where quick remote disconnect capability is required. Combined with dependable overload and short-circuit protection, the THQL32020ST1 helps safeguard both personnel and equipment while supporting modern electrical control strategies.

The plug-on design helps simplify installation and maintenance, while the breaker's 10kA interrupting capacity at 240VAC provides confidence in demanding environments. Its HACR rating also makes it suitable for heating, air conditioning, and refrigeration systems, making it a versatile choice across a wide range of electrical projects.

Key Features and Benefits

• 20 amp current rating: For reliable branch circuit protection.
• 3-pole configuration: Designed for three-phase electrical systems.
• Integrated 120VAC shunt trip: Enables remote breaker operation and emergency shutdown functions.
• Part of the proven Q-Line THQL series: Trusted for a wide range of electrical applications.
• Plug-on mounting design: Helps reduce installation time.
• 10kA interrupting rating at 240VAC: For effective fault protection.
• HACR rated: For heating, air conditioning, and refrigeration applications.
• Molded case construction: Built for long-term electrical performance.
• Ideal for systems requiring both circuit protection and remote disconnect capability.

Technical Specifications

• Part Number: THQL32020ST1
• Type: THQL
• Series: Q-Line
• Current Rating: 20 Amps
• Poles: 3
• Voltage Rating: 240 VAC
• Interrupting Capacity: 10kA @ 240VAC
• Shunt Trip Voltage: 120 VAC
• Mounting Style: Plug-On
• Construction: Molded Case Circuit Breaker
• HACR Rated: Yes
• Dimensions:
  • Height: 3.31 in
  • Width: 4.00 in
  • Depth: 2.81 in

Material Compliance and Certifications

• Application Compliance: The THQL32020ST1 is manufactured for use in electrical distribution systems that require reliable overcurrent protection and remote tripping functionality.
• HACR Rated: The breaker is HACR rated, making it suitable for approved HVAC and refrigeration applications.
• Installation Requirements: As with any electrical component, installation should be performed in accordance with applicable electrical codes, equipment specifications, and local regulations.

Where It Works Best

• The THQL32020ST1 is an excellent fit for applications where electrical protection and remote shutdown capability are both essential, including commercial buildings and office facilities, industrial manufacturing equipment, HVAC and refrigeration systems, motor control and machinery panels, emergency power disconnect systems, fire and life safety control circuits, three-phase power distribution equipment, and electrical panelboards and load centers using compatible Q-Line components.
• Whether you're protecting critical equipment, supporting a safety shutdown system, or upgrading an existing electrical installation, the THQL32020ST1 offers a practical combination of circuit protection, control, and reliability.