TJK426150WL **Older Style** - 150Amp Circuit Breaker

TJK426150WL **Older Style** - 150 Amp Circuit Breaker

The TJK426150WL molded case circuit breaker is designed for your dependable protection in commercial and industrial electrical distribution systems that require a 150-amp, 2-pole breaker with high interrupting capacity. Built as part of the trusted Q-Line family, this older-style black-face breaker features a thermal magnetic trip unit with internal common trip functionality to help you protect connected equipment and conductors from overloads and short circuits.

Configured in a cable-in/cable-out (lug-lug) design, the TJK426150WL includes both line-side and load-side lugs, making installation and replacement work more straightforward in compatible switchboards, panelboards, and distribution equipment. Its non-interchangeable trip unit helps maintain consistent protection settings while supporting applications that require fixed trip characteristics.

With interrupting ratings of 22k A.I.C. at 600VAC, 30k A.I.C. at 480VAC, and 42k A.I.C. at 240VAC, this breaker is suited for facilities that demand reliable overcurrent protection across a range of voltage systems. The HACR rating also makes it appropriate for heating, air conditioning, and refrigeration equipment applications. Built to last and designed for compatibility with existing electrical systems, the TJK426150WL remains a practical solution for maintenance teams, contractors, and facility managers seeking a replacement that delivers the right form, fit, and function.

Key Features and Benefits

• 150 Amp molded case circuit breaker: Designed for dependable overcurrent protection in commercial and industrial electrical distribution systems.
• 2-pole configuration: Suitable for multi-phase electrical systems requiring reliable circuit interruption.
• Older style black face design: Helps maintain compatibility with existing electrical equipment and legacy systems.
• Q-Line series construction: Built as part of the trusted Q-Line family for dependable operation.
• Thermal magnetic trip unit: Provides protection against overloads and short-circuit conditions.
• Internal common trip mechanism: Helps ensure coordinated tripping functionality during fault conditions.
• Non-interchangeable trip unit configuration: Supports applications requiring fixed trip characteristics and consistent protection settings.
• Cable-in/cable-out lug-lug connection style: Simplifies installation and replacement in compatible switchboards, panelboards, and distribution equipment.
• Includes line-side and load-side lugs: Provides the required connection points for straightforward installation.
• HACR rated: Appropriate for heating, air conditioning, and refrigeration equipment applications.
• Compact footprint: Suitable for use in commercial and industrial installations where space considerations are important.
• Designed for dependable long-term service: Built for compatibility and continued use in legacy power distribution systems.
  

Technical Specifications

• Part Number: TJK426150WL
  
• Type: TJK4
  
• Product Category: Molded Case Circuit Breaker
  
• Poles: 2
  
• Amperes: 150A
  
• Voltage / A.I.C. Rating:
  • 22k @ 600VAC
  • 30k @ 480VAC
  • 42k @ 240VAC
• Trip Unit: Thermal Magnetic
  
• Trip Style: 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.
• Face Style: Older Style Black Face
  

Material Compliance and Certifications

• HACR Rated: Approved for use in heating, air conditioning, and refrigeration equipment applications.
• Commercial and Industrial Applications: Designed for use in commercial and industrial electrical distribution systems.
• Thermal Magnetic Protection: Designed to respond to overload and short-circuit conditions for dependable overcurrent protection.
• Compatibility: Manufactured for compatibility with applicable molded case circuit breaker installations and assemblies.
  

Where It Works Best

• The TJK426150WL is commonly used in commercial buildings, industrial facilities, HVAC and refrigeration systems, distribution panels and switchboards, manufacturing environments, electrical maintenance and retrofit projects, and existing Q-Line compatible systems requiring matching breaker configurations. Its older-style black-face configuration and fixed-trip design make it especially useful when maintaining or replacing breakers in established electrical systems where exact compatibility is critical.