TJK426125WL **Older Style** - 125Amp Circuit Breaker

TJK426125WL **Older Style** - 125 Amp Circuit Breaker

The TJK426125WL molded case circuit breaker is designed for your dependable protection in commercial and industrial electrical distribution systems where maintaining compatibility with existing equipment is essential. Built as part of the TJK4 Q-Line series, this 2-pole, 125-amp breaker features an older-style black face configuration and includes both line-side and load-side lugs for cable-in/cable-out installations. Its thermal magnetic trip unit provides reliable overcurrent and short-circuit protection, while the internal common trip mechanism helps ensure both poles disconnect simultaneously during fault conditions. Built to last and well-suited for demanding environments, this breaker is commonly used in switchboards, panelboards, and distribution equipment requiring high interrupting capacity and consistent operation.

Key Features and Benefits

• 125 Amp, 2-Pole Molded Case Circuit Breaker: Designed for dependable protection in commercial and industrial electrical distribution systems.
• Older Style Black Face Configuration: Provides compatibility with existing systems requiring legacy form, fit, and function.
• Type TJK4 Design: Built for commercial and industrial power distribution applications requiring reliable performance.
• Cable-in/Cable-out (Lug-Lug) Connection Style: Simplifies installation and includes both line-side and load-side lugs.
• Thermal Magnetic Trip Unit: Helps protect against overloads and short circuits for dependable circuit interruption.
• Internal Common Trip Mechanism: Disconnects both poles simultaneously during fault conditions for added protection.
• HACR Rated: Suitable for heating, air conditioning, and refrigeration applications.
• Built for Long-Term Service: Designed for demanding electrical environments and ongoing operation in commercial and industrial systems.
  

Technical Specifications

• Part Number: TJK426125WL
  
• Type: TJK4
  
• Poles: 2
  
• Amperage: 125A
  
• Voltage / A.I.C. Ratings:
  • 22k A.I.C. @ 600VAC
  • 30k A.I.C. @ 480VAC
  • 42k A.I.C. @ 240VAC
• Trip Unit: Thermal Magnetic, Non-Interchangeable
  
• Connection Type: Lug-Lug (Cable-in/Cable-out)
  
• Dimensions:
  • Height: 10.13 in.
  • Width: 8.25 in.
  • Depth: 3.81 in.
• Series: Q-Line
  
• Mounting Style: Molded Case Circuit Breaker
  
• Additional Features: Internal Common Trip, Includes Line and Load-Side Lugs, HACR Rated
  

Material Compliance and Certifications

• Industry Standards: The TJK426125WL circuit breaker is manufactured for use in commercial and industrial electrical distribution systems and is designed to meet applicable industry standards for molded case circuit breakers.
• HACR Rating: The HACR rating makes it suitable for HVAC applications that require approved circuit protection. Always confirm installation requirements and local electrical code compliance before use.
  

Where It Works Best

• The TJK426125WL is commonly used in commercial buildings, industrial facilities, HVAC equipment systems, electrical distribution panels, switchboards and panelboards, manufacturing environments, and existing legacy power systems requiring compatible replacement breakers. Its combination of high interrupting capacity, thermal magnetic protection, and lug-lug configuration makes it a practical solution for maintaining and servicing established electrical infrastructure.