TJK426150 **Older Style** - 150Amp Circuit Breaker

TJK426150 **Older Style** - 150 Amp Circuit Breaker

The TJK426150 molded case circuit breaker is a dependable solution for your commercial and industrial electrical distribution systems that require a 2-pole, 150-amp breaker with proven thermal-magnetic protection. Built as part of the Type TJK4 Q-Line series, this bolt-on circuit breaker features an older-style black-face configuration commonly used in existing panel and switchgear applications where maintaining proper fit and compatibility is essential. Its internal common trip mechanism helps you to protect connected equipment by disconnecting both poles simultaneously during overloads or short circuits.

Engineered for demanding electrical environments, the TJK426150 features a non-interchangeable thermal magnetic trip unit and is HACR-rated for heating, air conditioning, and refrigeration applications. With interrupting capacities rated up to 42k A.I.C. at 240VAC, this breaker is well-suited for facilities operating across a variety of voltage systems. The included load-side lugs simplify installation, while the molded case construction is built to last in everyday operating conditions. Whether installed in manufacturing facilities, commercial buildings, or legacy power distribution systems, this breaker provides the form, fit, and function needed for reliable circuit protection.

Key Features and Benefits

• 150 Amp, 2-Pole Configuration: Designed for branch and feeder circuit protection in commercial and industrial power systems.
• Type TJK4 Q-Line Breaker: Compatible with designated Q-Line panelboards and electrical distribution equipment.
• Older Style Black Face Design: Helps maintain consistency and compatibility in existing installations and legacy systems.
• Thermal Magnetic Trip Unit: Provides protection against both overloads and short-circuit conditions.
• Internal Common Trip Mechanism: Simultaneously disconnects both poles during fault conditions for added system protection.
• Bolt-On Mounting Style: Supports secure installation in approved electrical assemblies.
• HACR Rated: Suitable for heating, air conditioning, and refrigeration equipment applications.
• Includes Load-Side Lugs: Allows for easier conductor termination during installation.
• Built to Last: Molded case construction is designed for long-term use in demanding electrical environments.
  

Technical Specifications

• Part Number: TJK426150
  
• Type: TJK4
  
• Product Style: Older Style Black Face
  
• Circuit Breaker Type: Molded Case Circuit Breaker
  
• Mounting Style: Bolt-On
  
• Poles: 2
  
• Amperage: 150 Amps
  
• Trip Unit: Non-Interchangeable Thermal Magnetic
  
• Trip Function: Internal Common Trip
  
• A.I.C. Rating:
  • 22k @ 600VAC
  • 30k @ 480VAC
  • 42k @ 240VAC
• HACR Rated: Yes
  
• Included Accessories: Load-Side Lugs
  
• Height: 10.13 in.
  
• Width: 8.25 in.
  
• Depth: 3.81 in.
  

Material Compliance and Certifications

• HACR Rated for HVAC-related applications: Manufactured for use in commercial and industrial electrical distribution systems.
• Molded Case Construction: Molded case construction is designed for durability and consistent operation.
• Industry Standards: Designed to meet applicable industry standards for circuit protection equipment based on original manufacturer specifications.
  

Where It Works Best

• The TJK426150 circuit breaker is commonly used in commercial buildings, industrial facilities, mechanical equipment rooms, HVAC distribution systems, manufacturing operations, existing Q-Line panelboard installations, and legacy electrical distribution equipment requiring compatible replacement components. Its combination of bolt-on mounting, thermal magnetic protection, and an older-style black-face configuration makes it especially useful where maintaining compatibility with existing electrical infrastructure is important.