TJK426175 **Older Style** - 175Amp Circuit Breaker

TJK426175 **Older Style** - 175 Amp Circuit Breaker

The TJK426175 molded case circuit breaker is designed for your dependable protection in commercial and industrial electrical distribution systems where maintaining compatibility with existing equipment matters. Built as part of the trusted Q-Line series, this 2-pole, 175-amp breaker features an older style black face configuration and a non-interchangeable thermal magnetic trip unit with internal common trip functionality. Its bolt-on mounting design helps you provide a secure installation in compatible panelboards and switchgear applications, while the included load-side lugs support straightforward field connection. Engineered for long-term service in demanding environments, the TJK426175 is commonly used in facilities that require consistent overcurrent and short-circuit protection without changing existing system layouts or configurations. HACR rating further supports use in heating, air conditioning, and refrigeration equipment applications where code-compliant protection is required.

Key Features and Benefits

• 175 Amp Molded Case Circuit Breaker: Designed for commercial and industrial power distribution systems.
• Older Style Black Face Configuration: Supports compatibility with legacy electrical equipment.
• 2-Pole Design: Suitable for protecting 240VAC, 480VAC, and 600VAC circuits.
• Thermal Magnetic Trip Unit: Provides both overload and short-circuit protection.
• Internal Common Trip Mechanism: Disconnects both poles simultaneously during fault conditions.
• Bolt-On Mounting Style: Helps ensure a stable and secure connection.
• Included Load-Side Lugs: Supports convenient installation and conductor termination.
• HACR Rated: Suitable for heating, air conditioning, and refrigeration applications.
• Q-Line Series Construction: Built for long service life in demanding operating conditions.
• Form, Fit, and Functional Replacement: Designed for existing compatible systems.
  

Technical Specifications

• Part Number: TJK426175
  
• Type: TJK4
  
• Product Style: Older Style Black Face
  
• Poles: 2
  
• Amperage: 175 Amps
  
• Voltage Rating: 240VAC / 480VAC / 600VAC
  
• Interrupting Rating:
  • 42kA @ 240VAC
  • 30kA @ 480VAC
  • 22kA @ 600VAC
• Trip Unit: Thermal Magnetic
  
• Trip Style: Non-Interchangeable with Internal Common Trip
  
• Mounting Style: Bolt-On
  
• Series: Q-Line
  
• HACR Rated: Yes
  
• Included Accessories: Load-Side Lugs
  
• Dimensions:
  • Height: 10.13 in.
  • Width: 8.25 in.
  • Depth: 3.81 in.

Material Compliance and Certifications

• HACR Rated: Approved for HVAC and refrigeration system applications.
• Industry Standards: Manufactured to meet applicable molded case circuit breaker industry standards for overcurrent protection.
• Commercial and Industrial Use: Designed for use in properly rated commercial and industrial electrical systems.
• Compatible Configurations: Suitable for installations requiring compatible Q-Line bolt-on breaker configurations.
  

Where It Works Best

• The TJK426175 circuit breaker is commonly installed in commercial buildings, industrial facilities, manufacturing environments, distribution equipment, and HVAC-related systems requiring dependable overcurrent protection. It is especially well-suited for maintaining existing electrical infrastructure where compatibility with older Q-Line equipment and older-style black-face breaker configurations is important. This breaker is often used in panelboards, switchboards, and power distribution systems operating at 240VAC, 480VAC, or 600VAC.