THQL32040ST1 - 40Amp Circuit Breaker

THQL32040ST1 - 40 Amp Circuit Breaker

The THQL32040ST1 is a 40 amp, 3-pole molded case circuit breaker designed for your dependable circuit protection in commercial, industrial, and light commercial electrical distribution systems. Part of the trusted THQL Q-Line family, this plug-on circuit breaker combines efficient overcurrent protection with the added functionality of an integrated 120VAC shunt trip, allowing remote tripping capability when connected to an external control signal. Its compact design helps you to simplify installation while providing reliable performance in panelboards and load centers requiring three-phase protection.

Built to meet the demands of modern electrical systems, the THQL32040ST1 helps safeguard conductors and equipment from damage caused by overloads and short circuits. The inclusion of a factory-installed shunt trip makes it an excellent choice for applications where emergency shutdown, remote disconnect, fire safety integration, or automated control systems are required. With a 10kA interrupting rating at 240VAC and HACR certification, this breaker is suitable for a wide range of HVAC and power distribution applications.

Key Features and Benefits

• 40 Amp Rating: Provides reliable overcurrent protection for branch circuits and connected equipment.
• 3-Pole Configuration: Designed for three-phase electrical systems requiring simultaneous interruption of all phases.
• 120VAC Shunt Trip: Enables remote tripping and emergency shutdown capabilities through an external control circuit.
• THQL Q-Line Design: Compatible with designated Q-Line panelboards and load centers.
• Plug-On Installation: Helps reduce installation time and simplifies maintenance procedures.
• 10kA Interrupting Capacity: Rated to safely interrupt fault currents up to 10,000 amperes at 240VAC.
• HACR Rated: Suitable for heating, air conditioning, and refrigeration equipment applications.
• Molded Case Construction: Provides dependable protection and long service life in demanding environments.
  

Technical Specifications

• Part Number: THQL32040ST1
  
• Type: THQL
  
• Circuit Breaker Style: Molded Case Circuit Breaker
  
• Mounting Style: Plug-On
  
• Poles: 3
  
• Amperage Rating: 40 Amps
  
• Voltage Rating: 240VAC
  
• Interrupting Rating: 10kA @ 240VAC
  
• Shunt Trip Voltage: 120VAC
  
• HACR Rated: Yes
  
• Product Line: Q-Line
  
• Dimensions:
  • Height: 3.31 in.
  • Width: 4.00 in.
  • Depth: 2.81 in.

Material Compliance and Certifications

• HACR Rated: For use with heating, air conditioning, and refrigeration equipment.
• Industry Standards: Manufactured to meet applicable industry standards for molded case circuit breakers.
• Installation Compatibility: Designed for installation in compatible electrical distribution equipment and panel systems.
• Safety and Reliability: Engineered for safe and reliable overcurrent protection when installed according to applicable electrical codes and manufacturer requirements.
  

Where It Works Best

• The THQL32040ST1 is well-suited for commercial buildings, industrial facilities, mechanical systems, HVAC equipment, control panels, and electrical distribution applications that require both circuit protection and remote tripping functionality. Its integrated 120VAC shunt trip makes it particularly useful in emergency power disconnect systems, fire alarm interfaces, safety shutdown circuits, and automated building management systems where immediate remote breaker operation is essential.