TJK426350WL - 350Amp Circuit Breaker

TJK426350WL - 350 Amp Circuit Breaker

The TJK426350WL molded case circuit breaker is designed for your dependable circuit protection in commercial and industrial electrical distribution systems requiring a 350 amp, 2-pole configuration. Built as part of the trusted TJK4 series, this breaker features a thermal magnetic trip unit with internal common trip functionality to help you protect connected equipment and conductors from overloads and short circuits. Its cable-in/cable-out lug-lug design simplifies installation in compatible switchboards, panelboards, and distribution equipment where secure line and load connections are essential.

Engineered for form, fit, and functional replacement applications, the TJK426350WL is HACR rated and suited for HVAC-related systems as well as a wide range of heavy-duty power distribution environments. With interrupting capacities rated up to 22kA at 600VAC, 30kA at 480VAC, and 42kA at 240VAC, this breaker is built to last in demanding operating conditions while maintaining compatibility with existing electrical infrastructure. Included line-side and load-side lugs provide added installation convenience and help reduce setup time in the field.

Key Features and Benefits

• 350 Amp Molded Case Circuit Breaker: Designed for commercial and industrial power distribution applications requiring dependable circuit protection.
• 2-Pole Configuration: Compatible with AC electrical systems requiring a 2-pole breaker design.
• Thermal Magnetic Trip Unit: Helps protect connected equipment and conductors from overloads and short circuits.
• Internal Common Trip Mechanism: Enhances coordinated circuit interruption during fault conditions.
• Q-Line Style Breaker: Suitable for legacy and existing electrical systems where compatibility is important.
• Cable-In/Cable-Out Lug-Lug Design: Simplifies installation and supports straightforward field wiring connections.
• HACR Rated: Suitable for heating, air conditioning, and refrigeration applications.
• Includes Line-Side and Load-Side Lugs: Provides added installation convenience and helps reduce setup time in the field.
• Built for Demanding Environments: Designed for long-term service in commercial and industrial applications.
  

Technical Specifications

• Part Number: TJK426350WL
  
• Type: TJK4
  
• Breaker Style: Molded Case Circuit Breaker
  
• Poles: 2
  
• Amperage: 350A
  
• Trip Unit: Thermal Magnetic
  
• Trip Function: Internal Common Trip
  
• Connection Type: Cable-in/Cable-out (Lug-Lug)
  
• A.I.C. Rating:
  • 22kA @ 600VAC
  • 30kA @ 480VAC
  • 42kA @ 240VAC
• HACR Rated: Yes
  
• Included Accessories: Line and Load-Side Lugs
  
• Dimensions:
  • Height: 10.13 in.
  • Width: 8.25 in.
  • Depth: 3.81 in.

Material Compliance and Certifications

• HACR Rated: Approved for HVAC and refrigeration system applications.
• Commercial and Industrial Use: Manufactured for use in commercial and industrial electrical distribution systems.
• Operational Standards: Designed to meet applicable molded case circuit breaker operational standards for compatibility and protection requirements.
• Thermal Magnetic Protection: Helps support the safe operation of connected electrical equipment through overload and short-circuit protection.
  

Where It Works Best

• The TJK426350WL circuit breaker is commonly used in commercial buildings, industrial facilities, manufacturing operations, HVAC equipment, distribution panels, and power management systems that require a 350-amp, 2-pole molded case circuit breaker. It is especially well-suited for maintenance, replacement, and retrofit projects where matching existing equipment specifications, dimensions, and interrupting ratings is important for continued system operation and compatibility.