TJK436125WL - 125Amp Circuit Breaker

TJK436125WL - 125 Amp Circuit Breaker

The TJK436125WL molded case circuit breaker is designed for your commercial and industrial power distribution systems that require dependable circuit protection in higher-voltage applications. Built as part of the trusted TJK4 Q-Line series, this 3-pole breaker features a fixed thermal magnetic trip unit with internal common trip functionality to help protect electrical systems from overloads and short circuits. Its cable-in/cable-out lug-lug configuration simplifies installation in compatible switchboards, panelboards, and distribution equipment where reliable fit and function are essential.

Rated at 125 amps, the TJK436125WL offers interrupting capacities of 22 kA at 600 VAC, 30 kA at 480 VAC, and 42 kA at 240 VAC, making it suitable for a wide range of commercial and industrial applications. The included line- and load-side lugs help you streamline field installation while maintaining secure conductor termination. With HACR rating compatibility and durable molded case construction, this breaker is built to last in demanding environments where consistent protection is essential.

Key Features and Benefits

• 125A Molded Case Circuit Breaker: Designed for commercial and industrial electrical systems requiring dependable circuit protection.
• 3-Pole Configuration: Suitable for multi-phase power distribution applications.
• TJK4 Q-Line Design: Features a cable-in/cable-out (lug-lug) connection configuration for compatibility with existing equipment layouts.
• Thermal Magnetic Trip Unit: Protects against overloads and short circuits through fixed non-interchangeable trip functionality.
• Internal Common Trip Mechanism: Disconnects all poles simultaneously during fault conditions for improved system protection.
• Installation Convenience: Includes both line-side and load-side lugs to simplify field installation and conductor termination.
• HACR Rated: Approved for use in heating, air conditioning, and refrigeration applications.
• Compact Molded Case Construction: Supports dependable operation in space-conscious electrical equipment layouts.
• Form, Fit, and Function Compatibility: Designed for use in existing systems requiring matching electrical infrastructure components.
  

Technical Specifications

• Part Number: TJK436125WL
  
• Type: TJK4
  
• Frame Series: Q-Line
  
• Current Rating: 125 Amps
  
• Poles: 3
  
• Trip Unit: Non-Interchangeable Thermal Magnetic
  
• Interrupting Rating:
  • 22kA @ 600VAC
  • 30kA @ 480VAC
  • 42kA @ 240VAC
• Connection Type: Cable-In/Cable-Out (Lug-Lug)
  
• Trip Style: Internal Common Trip
  
• Dimensions:
  • Height: 10.13 in.
  • Width: 8.25 in.
  • Depth: 3.81 in.
• Included Accessories: Line and Load-Side Lugs
  
• HACR Rated: Yes
  

Material Compliance and Certifications

• Commercial and Industrial Applications: Manufactured for use in commercial and industrial electrical distribution systems.
• HACR Compatibility: Rated for compatible HVAC and refrigeration applications.
• Molded Case Construction: Intended for use in properly configured and code-compliant installations.
• Industry Standards: Designed to meet applicable industry standards for circuit protection equipment based on original manufacturer specifications.
  

Where It Works Best

• The TJK436125WL is commonly used in commercial buildings, manufacturing facilities, HVAC systems, distribution panels, and industrial power systems that require a 125A, 3-pole molded-case circuit breaker. Its lug-lug configuration and Q-Line compatibility make it a practical choice for maintenance projects, equipment replacements, and applications where matching existing electrical infrastructure is important.