TJJ436350 - 350Amp Circuit Breaker

TJJ436350 - 350 Amp Circuit Breaker

The TJJ436350 molded case circuit breaker is designed for your commercial and industrial electrical distribution systems that require dependable overcurrent and short-circuit protection in higher-amperage applications. Built as part of the trusted Q-Line series, this 3-pole, 350-amp circuit breaker features a thermal magnetic trip unit with internal common trip, helping you to protect connected equipment and branch circuits from overloads and fault conditions. Its bolt-on mounting design supports secure installation in compatible panelboards and switchgear systems, while the included load-side lugs simplify conductor termination during maintenance or replacement projects.

Engineered for form, fit, and functional compatibility in existing electrical systems, the Type TJJ breaker is commonly used in facilities where maintaining system continuity and matching existing equipment specifications matter most. The breaker is also HACR rated, making it suitable for heating, air conditioning, and refrigeration applications. With interrupting ratings up to 22kA at 600VAC, this breaker is built to handle demanding electrical environments while meeting the requirements of many legacy and ongoing power distribution setups.

Key Features and Benefits

• 350 Amp Current Rating: For high-capacity commercial and industrial power distribution.
• 3-Pole Configuration: Designed for three-phase electrical systems.
• Thermal Magnetic Trip Unit: Helps protect against overloads and short circuits.
• Internal Common Trip Mechanism: Disconnects all poles simultaneously during fault conditions.
• Bolt-On Mounting Design: Supports stable installation in compatible assemblies.
• Q-Line Series Compatibility: Helps match existing electrical infrastructure.
• HACR Rated: Suitable for use in heating, ventilation, air conditioning, and refrigeration systems.
• Includes Load-Side Lugs: Assists with wiring and installation efficiency.
• Built for Long-Term Service: Designed for demanding operating environments.
  

Technical Specifications

• Part Number: TJJ436350
  
• Manufacturer Series: Q-Line
  
• Type: TJJ
  
• Product Type: Molded Case Circuit Breaker
  
• Poles: 3
  
• Amperage Rating: 350A
  
• Trip Unit: Thermal Magnetic
  
• Trip Style: Internal Common Trip
  
• Mounting Style: Bolt-On
  
• HACR Rated: Yes
  
• Included Accessories: Load-Side Lugs
  
• A.I.C. Rating @ 240VAC: 42kA
  
• A.I.C. Rating @ 480VAC: 30kA
  
• A.I.C. Rating @ 600VAC: 22kA
  
• Dimensions:
  • Height: 10.13 in.
  • Width: 8.25 in.
  • Depth: 3.81 in.

Material Compliance and Certifications

• HACR Rated: The TJJ436350 circuit breaker is manufactured for use in electrical distribution systems requiring properly rated overcurrent protection equipment. Its HACR rating supports applications involving HVAC and refrigeration equipment that require compliant circuit protection.
• Installation Compliance: As with all molded-case circuit breakers, installation should be performed in accordance with applicable electrical codes, manufacturer guidelines, and system requirements.
  

Where It Works Best

• The TJJ436350 is well-suited for commercial buildings and office facilities, industrial manufacturing environments, mechanical and HVAC equipment distribution, motor control and power distribution systems, existing Q-Line panelboards and switchgear setups, and maintenance, repair, and replacement projects requiring matching breaker specifications. Its combination of high amperage capacity, bolt-on installation, and thermal magnetic protection makes it a practical choice for facilities maintaining established electrical infrastructure while ensuring dependable circuit protection.