THQL2150ST1 - 50Amp Circuit Breaker

THQL2150ST1 - 50 Amp Circuit Breaker

The THQL2150ST1 is a 50-amp, 2-pole molded case circuit breaker designed to provide dependable overcurrent protection for your commercial, industrial, and residential electrical distribution systems. Part of the trusted THQL Q-Line family, this plug-on circuit breaker combines reliable circuit protection with the added functionality of a 120VAC shunt trip, allowing the breaker to be remotely tripped when connected to an external control circuit. Its compact design makes installation straightforward in compatible load centers and panelboards, while the 10kA interrupting capacity at 120/240VAC helps you safeguard electrical equipment from damaging fault currents. HACR-rated for heating, air conditioning, and refrigeration applications, the THQL2150ST1 is a versatile solution for systems that require both standard branch circuit protection and remote emergency shutdown capabilities.

Key Features and Benefits

• 50 Amp Continuous Protection: Designed to protect electrical circuits and connected equipment from overloads and short circuits.
• 2-Pole Configuration: Suitable for 120/240VAC applications requiring protection across two energized conductors.
• Integrated 120VAC Shunt Trip: Enables remote tripping for emergency shutdown systems, safety controls, and automated protection schemes.
• THQL Q-Line Design: Compatible with designated Q-Line load centers and panelboards for convenient installation.
• Plug-On Mounting: Simplifies installation and replacement while helping reduce downtime.
• 10kA Interrupting Capacity: Rated to safely interrupt fault currents up to 10,000 amperes at 120/240VAC.
• HACR Rated: Suitable for heating, air conditioning, and refrigeration equipment applications.
• Molded Case Construction: Built for dependable performance in demanding electrical environments.
  

Technical Specifications

• Part Number: THQL2150ST1
  
• Type: THQL
  
• Circuit Breaker Style: Molded Case Circuit Breaker
  
• Series: Q-Line
  
• Mounting Type: Plug-On
  
• Poles: 2
  
• Amperage Rating: 50 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 THQL2150ST1 is manufactured and tested to meet applicable industry standards for molded case circuit breakers.
• HACR Rating: Its HACR rating confirms suitability for heating, ventilation, air conditioning, and refrigeration equipment installations, provided they are approved by applicable electrical codes and project specifications. Always verify compliance requirements for your specific installation and local jurisdiction.
  

Where It Works Best

• The THQL2150ST1 is an excellent choice for electrical systems that require both overcurrent protection and remote trip functionality. Common applications include commercial buildings, industrial control panels, HVAC systems, refrigeration equipment, emergency shutdown systems, machinery disconnect circuits, and facility safety control installations. Its combination of branch-circuit protection and shunt-trip capability makes it especially valuable in environments where remote operation or emergency power isolation is required.