TJJ426350WL **Older Style** - 350Amp Circuit Breaker

TJJ426350WL **Older Style** - 350 Amp Circuit Breaker

The TJJ426350WL molded case circuit breaker is designed for dependable overcurrent protection in your commercial and industrial electrical distribution systems that require a direct replacement solution for existing equipment. Built with a classic older-style black-face configuration, this Type TJJ breaker features a 350-amp rating, 2-pole construction, and a thermal-magnetic trip unit with internal common trip functionality for consistent circuit interruption during overloads or short-circuit conditions. Its cable-in/cable-out lug-lug design simplifies installation in compatible switchboards and panel systems. At the same time, the included line- and load-side lugs help you to ensure secure conductor terminations. Engineered for long service life in demanding environments, this breaker is commonly used where maintaining compatibility with legacy electrical infrastructure is essential.

Key Features and Benefits

• 350 amp molded case circuit breaker for commercial and industrial power distribution: The Type TJJ configuration is designed for compatibility with existing electrical systems.
• Older style black face construction: Designed for matching legacy installations.
• 2-pole breaker design with internal common trip operation: The thermal magnetic trip unit protects against overloads and short circuits.
• Cable-in/cable-out (lug-lug) connection style: Supports straightforward field installation.
• Includes both line-side and load-side lugs: Helps ensure secure conductor terminations.
• HACR rated: Suitable for heating, air conditioning, and refrigeration applications.
• Built for long-lasting operation: Designed for demanding electrical environments.
• Non-interchangeable trip unit: Helps maintain factory-configured protection settings.
  

Technical Specifications

• Part Number: TJJ426350WL
  
• Type: TJJ
  
• Product Style: Older Style Black Face
  
• Poles: 2
  
• Amperage Rating: 350 Amps
  
• Trip Unit: Thermal Magnetic
  
• Trip Configuration: Internal Common Trip
  
• Connection Type: Cable-in/Cable-out (Lug-Lug)
  
• 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.
• Included Accessories: Line and Load-Side Lugs
  

Material Compliance and Certifications

• Commercial and Industrial Application: The TJJ426350WL circuit breaker is manufactured for use in applicable commercial and industrial electrical systems that require molded-case circuit protection.
• HACR Rated: Designed to meet the operational requirements of compatible legacy distribution equipment.
• Installation Guidance: Proper installation and application should always follow local electrical codes and equipment specifications.
  

Where It Works Best

• The TJJ426350WL is commonly used in commercial buildings, industrial facilities, motor control applications, HVAC and refrigeration systems, electrical distribution panels, switchboards, and legacy power systems requiring Type TJJ compatibility. Its form-fit-function design makes it particularly suitable for maintaining and servicing existing electrical infrastructure where matching breaker type, dimensions, and connection style is important.