TJK436175WL **Older Style** - 175Amp Circuit Breaker

TJK436175WL **Older Style** - 175 Amp Circuit Breaker

The TJK436175WL molded case circuit breaker is designed for your dependable circuit protection in commercial and industrial electrical distribution systems where maintaining compatibility with existing equipment is essential. Built as part of the trusted Q-Line family, this 175 amp, 3-pole circuit breaker features a thermal magnetic trip unit with an internal common trip, helping to protect your electrical systems from overloads and short circuits while supporting safe power distribution across connected equipment. Its cable-in/cable-out lug-lug configuration includes both line-side and load-side lugs for straightforward installation in compatible switchboards, panelboards, and distribution equipment.

This breaker’s older style black face design makes it especially useful for matching and replacing existing installed units in legacy electrical systems where form and fit matter. With interrupting ratings of 22k @ 600VAC, 30k @ 480VAC, and 42k @ 240VAC, the TJK436175WL is suited for a wide range of industrial and commercial applications requiring reliable branch and feeder protection. The non-interchangeable trip unit helps maintain consistent protection settings, while the HACR rating supports use in heating, air conditioning, and refrigeration applications. Built to last and engineered for long-term serviceability, this breaker remains a practical solution for maintaining existing power systems without requiring major equipment modifications.

Key Features and Benefits

• 175 Amp molded case circuit breaker: Designed for commercial and industrial power distribution.
• 3-pole configuration: Supports three-phase electrical systems.
• Older style black face: Useful for compatibility with existing legacy equipment.
• Q-Line design: Supports form, fit, and functional replacement applications.
• Thermal magnetic trip unit: Provides overload and short-circuit protection.
• Internal common trip mechanism: Enhances coordinated circuit interruption.
• Cable-in/cable-out lug-lug connection: Simplifies installation.
• Includes line-side and load-side lugs: Supports straightforward integration into compatible systems.
• HACR rated: Suitable for heating, air conditioning, and refrigeration applications.
• Built for long-term durability: Designed for demanding electrical environments.
  

Technical Specifications

• Part Number: TJK436175WL
  
• Type: TJK4
  
• Frame Style: Older Style Black Face
  
• Poles: 3
  
• Amperes: 175A
  
• Voltage / A.I.C. Rating:
  • 22k @ 600VAC
  • 30k @ 480VAC
  • 42k @ 240VAC
• Trip Unit: Non-Interchangeable Thermal Magnetic
  
• Trip Configuration: Internal Common Trip
  
• Connection Type: Cable-in/Cable-out (Lug-Lug)
  
• Included Accessories: Line and Load-Side Lugs
  
• HACR Rated: Yes
  
• Dimensions:
  • Height: 10.13 in
  • Width: 8.25 in
  • Depth: 3.81 in

Material Compliance and Certifications

• HACR Rated: Suitable for HVAC-related applications.
• Commercial and Industrial Use: Manufactured for use in commercial and industrial electrical distribution systems.
• Applicable Standards: Designed to meet applicable molded case circuit breaker standards for installed electrical equipment.
• Overcurrent Protection: Suitable for applications requiring properly rated overcurrent protection and equipment compatibility.
  

Where It Works Best

• The TJK436175WL is commonly used in commercial buildings, industrial facilities, manufacturing equipment, distribution panels and switchboards, HVAC systems and refrigeration equipment, existing electrical infrastructure requiring compatible replacement breakers, and three-phase power distribution applications requiring 175 amp protection. Its older style configuration makes it particularly useful when maintaining or servicing existing systems where matching dimensions, mounting style, and connection layout are important for continued operation.