TJ226125 - 125Amp Circuit Breaker

TJ226125 - 125 Amp Circuit Breaker

The TJ226125 circuit breaker is a 2-pole, 125-amp thermal-magnetic circuit breaker designed for dependable protection in your commercial and industrial electrical distribution systems. Built on the trusted TJ-frame platform, this breaker features a non-interchangeable trip unit. It is rated for operation in 40°C environments, making it well-suited for demanding applications where consistent circuit protection matters. With a 14k A.I.C. rating at 480 VAC, the TJ226125 helps you to protect equipment and electrical systems from overloads and short circuits while maintaining compatibility with legacy installations. Load-side terminals are included for added installation convenience, helping reduce downtime during replacement or maintenance projects. Built to last and engineered for compatibility with form, fit, and function, this breaker is a practical solution for maintaining older power distribution systems without unnecessary modifications.

Key Features and Benefits

• 125 Amp Current Rating: Designed for reliable circuit protection in commercial and industrial applications.
• 2-Pole Configuration: Suitable for systems requiring dual-pole protection and disconnect capability.
• Thermal-Magnetic Trip Mechanism: Provides protection against both overloads and short-circuit conditions.
• 14k A.I.C. Rating at 480VAC: Helps safely interrupt fault currents in higher-voltage environments.
• TJ-Frame Design: Compatible with existing TJ-frame installations and legacy electrical systems.
• Non-Interchangeable Trip Unit: Factory-configured trip settings help maintain consistent protection characteristics.
• 40°C Rated: Intended for operation in elevated ambient temperature environments commonly found in electrical rooms and industrial facilities.
• Includes Load-Side Terminals: Simplifies installation and replacement tasks.
  

Technical Specifications

• Part Number: TJ226125
  
• Frame Type: TJ-Frame
  
• Circuit Breaker Type: Thermal-Magnetic
  
• Poles: 2
  
• Amperes: 125A
  
• Voltage Rating: 480VAC
  
• A.I.C. Rating: 14kA @ 480VAC
  
• Trip Unit: Non-Interchangeable
  
• Temperature Rating: 40°C
  
• Included Accessories: Load-Side Terminals
  
• Dimensions:
  • Height: 10.13 in.
  • Width: 8.25 in.
  • Depth: 4.0 in.

Material Compliance and Certifications

• Industry Standards: The TJ226125 circuit breaker is designed for use in electrical distribution applications that require dependable overcurrent protection and compatibility with established system designs.
• Application Compliance: Components are engineered to meet applicable industry standards associated with molded case circuit breakers and are intended for use in properly configured commercial and industrial electrical equipment.
• Installation Guidance: Always confirm installation requirements, system compatibility, and compliance with local electrical code before use.
  

Where It Works Best

• The TJ226125 is commonly used in commercial buildings, industrial facilities, manufacturing environments, and electrical distribution systems where TJ-frame breakers are already installed. It is especially useful for maintenance teams, electrical contractors, and facility managers seeking a direct replacement breaker that matches existing system requirements without major equipment modifications. Its 125A rating and 480VAC capability make it a suitable choice for motor control applications, panelboards, distribution equipment, and branch circuit protection in legacy power systems.