TJK426350WL **Older Style** - 350Amp Circuit Breaker

TJK426350WL **Older Style** - 350 Amp Circuit Breaker

The TJK426350WL molded case circuit breaker is designed for your dependable protection in commercial and industrial electrical distribution systems requiring a 350 amp, 2-pole configuration. Built as part of the GE TJK4 Q-Line series, this breaker features an older style black face and is commonly used in existing power distribution equipment where matching form, fit, and function is important. Its thermal magnetic trip unit provides protection against overloads and short circuits, while the internal common trip mechanism helps you to ensure both poles operate together during fault conditions. Designed with cable-in/cable-out lug connections and including both line-side and load-side lugs, the TJK426350WL offers straightforward installation in compatible legacy systems and switchgear applications. With HACR rating capability and strong interrupting performance at multiple voltage classes, this breaker is well suited for demanding electrical environments where long-term durability and consistent operation matter.

Key Features and Benefits

• 350 amp molded case circuit breaker: Designed for commercial and industrial power distribution.
• 2-pole configuration: Features internal common trip protection.
• Older style black face: Provides compatibility with existing equipment layouts.
• GE Q-Line Type TJK4 breaker design: Built for dependable performance in compatible systems.
• Thermal magnetic trip unit: Helps protect against overloads and short circuits.
• Non-interchangeable trip unit construction: Supports proper breaker configuration.
• Cable-in/cable-out (lug-lug) connection style: Simplifies field installation.
• Includes line-side and load-side lugs: Supports straightforward wiring connections.
• HACR rated: Suitable for heating, air conditioning, and refrigeration applications.
• Built for long service life: Designed for properly maintained electrical systems.
  

Technical Specifications

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

Material Compliance and Certifications

• HACR Rated: Suitable for HVAC and refrigeration system applications.
• Construction Standards: Designed to meet applicable molded case circuit breaker construction and protection standards for its class.
• Thermal Magnetic Protection: Supports safe operation in properly configured electrical distribution equipment.
• Application Compatibility: Suitable for use in compatible panelboards, switchboards, and industrial distribution systems.
  

Where It Works Best

• The TJK426350WL circuit breaker is commonly installed in commercial buildings, industrial facilities, manufacturing plants, and large electrical distribution systems that require a 350 amp, 2-pole breaker with high interrupting capacity. It is especially useful when maintaining or servicing existing GE Q-Line equipment where an older style black face breaker is needed for proper compatibility and appearance. Typical applications include HVAC equipment, motor distribution systems, feeder circuits, and heavy-duty electrical infrastructure requiring dependable circuit protection.