TJD422400WL - 400Amp Circuit Breaker

TJD422400WL - 400 Amp Circuit Breaker

The TJD422400WL molded case circuit breaker is designed for dependable circuit protection in your commercial and industrial electrical distribution systems that require a 400-amp, 2-pole Configuration. Built as part of the trusted Q-Line series, this breaker features an internal common trip mechanism that helps you to disconnect both poles simultaneously during overloads or short circuits, supporting safer operation and equipment protection. Its cable-in/cable-out lug-lug design includes both line-side and load-side lugs for straightforward installation in compatible switchboards, panelboards, and distribution equipment. With a 22kA interrupting capacity at 240VAC and an HACR rating, the TJD422400WL is well-suited for demanding HVAC applications, motor loads, and heavy-duty electrical systems where consistent protection is essential. Built to last and engineered for proper form, fit, and function, this breaker remains a practical solution for maintaining existing electrical infrastructure and legacy systems.

Key Features and Benefits

• 400 Amp Continuous Current Rating: For large commercial and industrial electrical loads.
• 2-Pole Configuration: Designed for 240VAC applications.
• 22kA A.I.C. Rating at 240VAC: Helps protect against high fault current conditions.
• Q-Line Series Compatibility: For use in compatible existing electrical systems.
• Cable-In/Cable-Out (Lug-Lug) Design: Simplifies field wiring connections.
• Internal Common Trip Mechanism: Disconnects both poles simultaneously during fault conditions.
• Includes Line and Load-Side Lugs: For installation convenience.
• HACR Rated: For heating, air conditioning, and refrigeration applications.
• Molded Case Construction: Designed for long-term durability in demanding environments.
  

Technical Specifications

• Part Number: TJD422400WL
  
• Type: TJD
  
• Product Category: Molded Case Circuit Breaker
  
• Poles: 2
  
• Amperage: 400A
  
• Voltage Rating: 240VAC
  
• A.I.C. Rating: 22kA @ 240VAC
  
• Trip Type: Internal Common Trip
  
• Series: Q-Line
  
• Connection Type: Cable-In/Cable-Out (Lug-Lug)
  
• Included Accessories: Line and Load-Side Lugs
  
• HACR Rated: Yes
  
• Dimensions:
  • Height: 10.13 in
  • Width: 8.25 in
  • Depth: 3.81 in

Material Compliance and Certifications

• Industry Standards: The TJD422400WL circuit breaker is manufactured for use in commercial and industrial electrical distribution systems. It is designed to meet applicable industry standards for molded case circuit breakers and HVAC applications.
• HACR Rating: The HACR rating supports use in heating, ventilation, air conditioning, and refrigeration equipment where compliant overcurrent protection is required.
• Installation Compatibility: Always verify compatibility and local code requirements before installation.
  

Where It Works Best

• The TJD422400WL is commonly used in commercial buildings and tenant spaces, industrial power distribution systems, HVAC equipment and refrigeration systems, manufacturing facilities, mechanical rooms and utility areas, existing Q-Line electrical distribution equipment, and replacement applications requiring compatible form, fit, and function. Its combination of high amperage capacity, lug-lug connectivity, and common trip protection makes it a solid choice for maintaining and servicing established electrical systems that depend on reliable overcurrent protection.