THQL2140ST1 - 40Amp Circuit Breaker

THQL2140ST1 - 40 Amp Circuit Breaker

The THQL2140ST1 is a 40-amp40-Amp, 2-pole molded-case circuit breaker designed to provide dependable overcurrent protection for your residential, commercial, and light industrial electrical systems. As part of the trusted THQL Q-Line family, this plug-on circuit breaker offers straightforward installation and consistent performance in compatible load centers and panelboards. Featuring a factory-installed 120VAC shunt trip, the THQL2140ST1 allows remote tripping of the breaker via an external control signal, making it an excellent choice for emergency shutdown systems, safety interlocks, and applications requiring remote disconnect.

Built to protect electrical circuits operating at 120/240VAC, this breaker combines reliable circuit protection with the convenience of remote operation. Its compact design helps you to maximize panel space while maintaining the performance and durability expected in demanding electrical environments. Additionally, its HACR rating makes it suitable for use in heating, air conditioning, and refrigeration applications where dependable circuit protection is essential.

Key Features and Benefits

• 40 Amp continuous current rating: For reliable branch circuit protection.
• 2-pole configuration: Designed for 120/240VAC electrical systems.
• Factory-installed 120VAC shunt trip: Enables remote breaker operation and emergency shutdown functionality.
• Q-Line plug-on design: Allows quick, efficient installation in compatible panelboards.
• Molded case construction: Helps protect internal components and supports long-term performance.
• 10kA interrupting capacity at 120/240VAC: Provides dependable fault current protection.
• HACR rated: For heating, air conditioning, and refrigeration equipment applications.
• Compact footprint: Helps conserve valuable panel space.
• Suitable for commercial, industrial, and residential electrical distribution systems.

Technical Specifications

• Part Number: THQL2140ST1
• Type: THQL
• Circuit Breaker Style: Molded Case Circuit Breaker
• Mounting Type: Plug-On
• Poles: 2
• Amperage Rating: 40 Amps
• Voltage Rating: 120/240VAC
• Interrupting Rating (A.I.C.): 10kA @ 120/240VAC
• Shunt Trip Voltage: 120VAC
• HACR Rated: Yes
• Dimensions:
  • Height: 3.31 in.
  • Width: 3.00 in.
  • Depth: 2.81 in.

Material Compliance and Certifications

• Industry Standards: The THQL2140ST1 is manufactured to meet applicable industry standards for molded case circuit breakers and electrical distribution equipment.
• HACR Rating: Its HACR rating supports use in HVAC and refrigeration applications, while its construction aligns with recognized electrical safety and performance requirements for installation in compatible electrical systems.
• Installation Notice: Always verify local code requirements and equipment compatibility before installation.

Where It Works Best

• The THQL2140ST1 is well-suited for electrical systems that require both standard overcurrent protection and remote tripping capability. Common applications include commercial buildings, industrial control panels, manufacturing facilities, emergency power shutdown systems, HVAC equipment, refrigeration systems, safety interlock circuits, and other installations where a remotely activated disconnect function is required. Its combination of dependable protection, plug-on convenience, and integrated shunt trip functionality makes it an excellent choice for projects that demand enhanced operational control and safety.