TJK426125 - 125Amp Circuit Breaker

TJK426125 - 125 Amp Circuit Breaker

The GE TJK426125 molded-case circuit breaker is a dependable solution for your commercial and industrial electrical distribution systems that require reliable overcurrent protection in legacy and existing installations. Built as part of the trusted Q-Line series, this 2-pole, 125-amp breaker features a thermal magnetic trip unit with internal common trip, helping you to protect electrical equipment and branch circuits from overloads and short circuits. Its bolt-on mounting design supports secure installation in compatible panelboards and switchgear applications, while the included load-side lugs help simplify field wiring. Engineered for long service life and consistent operation, the TJK426125 is commonly used in facilities where maintaining compatibility with existing electrical infrastructure is essential. With HACR rating capabilities and strong interrupting performance across multiple voltage systems, this breaker is well-suited for demanding commercial HVAC and power distribution environments.

Key Features and Benefits

• 125 Amp Capacity: Designed for reliable circuit protection in commercial and industrial power distribution systems.
• 2-Pole Configuration: Ideal for applications requiring dual-pole protection in compatible electrical systems.
• Thermal Magnetic Trip Unit: Combines thermal overload protection with magnetic short-circuit protection for dependable operation.
• Internal Common Trip Design: Helps ensure both poles trip simultaneously during fault conditions.
• Q-Line Bolt-On Mounting: Supports secure installation in designated GE panelboards and switchgear assemblies.
• HACR Rated: Suitable for HVAC-related applications requiring HACR-compliant circuit protection.
• High Interrupting Ratings: Rated for:
  • 22k A.I.C. @ 600VAC
  • 30k A.I.C. @ 480VAC
  • 42k A.I.C. @ 240VAC
• Includes Load-Side Lugs: Allows for convenient conductor termination during installation.
• Built to Last: Manufactured for long-term use in demanding electrical environments.
  

Technical Specifications

• Manufacturer Series: GE Q-Line
  
• Part Number: TJK426125
  
• Type: TJK4
  
• Circuit Breaker Type: Molded Case Circuit Breaker
  
• Mounting Style: Bolt-On
  
• Poles: 2
  
• Amperage Rating: 125 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
  
• Dimensions:
  • Height: 10.13 in.
  • Width: 8.25 in.
  • Depth: 3.81 in.

Material Compliance and Certifications

• Industry Standards: The GE TJK426125 circuit breaker is manufactured for use in commercial and industrial electrical systems where compliance with applicable electrical standards and safe overcurrent protection is required.
• HACR Rated: HACR rating makes it suitable for heating, air conditioning, and refrigeration equipment applications. Proper installation should always follow NEC requirements and local electrical codes.
  

Where It Works Best

• The TJK426125 is commonly used in commercial buildings, industrial facilities, manufacturing plants, HVAC distribution systems, electrical distribution panels, existing GE Q-Line panelboards and switchgear, and maintenance and replacement projects requiring compatible bolt-on molded case breakers. Its form, fit, and functional compatibility make it a practical choice for maintaining and servicing established electrical systems without unnecessary modifications.