TJJ426175 **Older Style** - 175Amp Circuit Breaker

TJJ426175 **Older Style** - 175 Amp Circuit Breaker

The TJJ426175 molded case circuit breaker is designed for dependable circuit protection in your commercial and industrial electrical distribution systems that require a 2-pole, 175-amp configuration. Built as part of the trusted Q-Line family, this bolt-on breaker features an older-style black-face design and a non-interchangeable thermal-magnetic trip unit with internal common trip functionality for coordinated protection across both poles. Its compact footprint and load-side lug configuration make it well-suited for maintenance replacements, retrofit applications, and existing panel installations where matching form and fit are important. Engineered for lasting service in demanding environments, the TJJ426175 delivers reliable overcurrent and short-circuit protection while supporting HVAC, power distribution, and motor-related applications thanks to its HACR rating.

Key Features and Benefits

• 175 amp, 2-pole molded case circuit breaker: Designed for commercial and industrial systems requiring dependable overcurrent protection.
• Older style black face configuration: Supports compatibility with existing installations and legacy electrical equipment.
• Q-Line bolt-on mounting design: Helps simplify installation in compatible panelboards and switchgear systems.
• Thermal magnetic trip unit: Protects against overloads and short circuits for reliable circuit interruption.
• Internal common trip mechanism: Disconnects both poles simultaneously during fault conditions for coordinated protection.
• Load-side lugs included: Allows secure conductor termination for dependable electrical connections.
• HACR rated: Suitable for heating, air conditioning, and refrigeration applications.
• Built for long-term use: Designed for dependable operation in electrical distribution and branch circuit protection systems.
• Retrofit and maintenance ready: Well-suited for legacy infrastructure and replacement applications where form and fit are important.
  

Technical Specifications

• Part Number: TJJ426175
  
• Type: TJJ
  
• Frame Style: Molded Case Circuit Breaker
  
• Trip Unit: Non-Interchangeable Thermal Magnetic
  
• Poles: 2
  
• Amperage Rating: 175 Amps
  
• Mounting Type: Bolt-On
  
• A.I.C. Rating:
  • 22k @ 600VAC
  • 30k @ 480VAC
  • 42k @ 240VAC
• Dimensions:
  • Height: 10.13 in.
  • Width: 8.25 in.
  • Depth: 3.81 in.
• Included: Load-Side Lugs
  
• Internal Trip: Common Trip
  
• HACR Rated: Yes
  

Material Compliance and Certifications

• HACR Rated: Approved for HVAC-related applications requiring molded case circuit protection.
• Commercial and Industrial Use: Manufactured for use in electrical distribution systems requiring dependable overcurrent protection.
• Electrical Distribution Standards: Designed to meet applicable standards associated with its class and configuration.
• Compatibility: Suitable for use in properly rated and compatible panelboard and switchgear systems.
  

Where It Works Best

• The TJJ426175 circuit breaker is commonly used in commercial buildings, manufacturing facilities, distribution equipment, and large HVAC systems where reliable 175 amp overcurrent protection is required. It is especially useful in retrofit and maintenance environments where an older-style black face breaker is needed to maintain compatibility with existing electrical equipment. This breaker is also a practical fit for branch circuit protection, motor loads, and power distribution systems operating at 240 VAC, 480 VAC, or 600 VAC.