THQB2150 - 50A Circuit Breaker

THQB2150 - 50A Circuit Breaker

The THQB2150 is a 50-amp, 2-pole bolt-on molded case circuit breaker designed for dependable circuit protection in your commercial, industrial, and residential electrical distribution systems. As part of the trusted THQB Q-Line series, this breaker provides reliable overcurrent and short-circuit protection for 120/240VAC applications while helping you to maintain system safety and uptime. Its bolt-on mounting design creates a secure connection to compatible panelboards, making it a practical choice for installations where vibration resistance and long-term stability are important. With a 10kA interrupting rating, HACR certification, and a compact footprint, the THQB2150 delivers the performance electricians and facility professionals expect when protecting branch circuits, HVAC equipment, lighting systems, and other electrical loads.

Key Features and Benefits

• 50 Amp Rating: Ideal for protecting higher-capacity branch circuits and electrical equipment.
• 2-Pole Configuration: Designed for use on 120/240VAC systems requiring protection across two poles.
• Bolt-On Mounting Design: Helps provide a secure mechanical and electrical connection within compatible panelboards.
• 10kA Interrupting Capacity: Rated to safely interrupt fault currents up to 10,000 amperes at 120/240VAC.
• THQB Q-Line Series: Engineered for compatibility with designated Q-Line panelboard applications.
• HACR Rated: Suitable for heating, air conditioning, and refrigeration equipment applications where HACR-rated protection is specified.
• Molded Case Construction: Built for dependable performance and long service life in demanding electrical environments.
• Space-Efficient Design: Compact dimensions help maximize panel space while maintaining reliable protection.
  

Technical Specifications

• Part Number: THQB2150
  
• Type: THQB
  
• Circuit Breaker Style: Molded Case Circuit Breaker
  
• Series: Q-Line
  
• Mounting Type: Bolt-On
  
• Poles: 2
  
• Amperage Rating: 50 Amps
  
• Voltage Rating: 120/240VAC
  
• Interrupting Rating: 10kA @ 120/240VAC
  
• HACR Rated: Yes
  
• Dimensions:
  • Height: 3.5 in.
  • Width: 2.0 in.
  • Depth: 2.81 in.

Material Compliance and Certifications

• HACR Rated: The THQB2150 is manufactured as a molded case circuit breaker for use in electrical distribution systems requiring dependable overcurrent protection. It is HACR-rated, making it suitable for applications involving heating, air conditioning, and refrigeration equipment where HACR-rated circuit protection is required.
• Installation Compliance: Always verify compatibility with the intended panelboard and installation requirements, and ensure all work complies with applicable local, state, and national electrical codes.
  

Where It Works Best

• Commercial buildings and office facilities
• Industrial control panels and equipment distribution
• HVAC and refrigeration systems
• Retail and institutional electrical systems
• Lighting and power distribution circuits
• Residential applications requiring a 50-amp, 2-pole breaker
• Replacement and maintenance projects involving compatible Q-Line panelboards
• When dependable circuit protection and secure bolt-on installation are essential, the THQB2150 provides a practical solution for maintaining safe and efficient electrical system operation.