TJD422350 **Older Style** 350A Circuit Breaker

TJD422350 **Older Style** 350A Circuit Breaker

The TJD422350 Older Style Black Face molded case circuit breaker is designed for dependable circuit protection in your commercial and industrial electrical distribution systems that require a 2-pole, 350-amp configuration. Built as part of the trusted Q-Line family, this Type TJD breaker features an internal common trip mechanism that helps you to protect connected equipment and circuits from overloads and short circuits. Its bolt-on mounting design allows for secure installation in compatible panelboards and switchgear applications, making it a practical form, fit, and functional replacement for existing systems already utilizing this breaker style.

This HACR-rated circuit breaker is commonly used in HVAC-related installations, manufacturing facilities, distribution equipment, and other high-current applications where maintaining continuity with existing electrical infrastructure is important. The included load-side lugs help simplify installation while supporting solid conductor connections. With its older style black face design, this breaker is especially well suited for maintaining compatibility in legacy electrical systems where matching equipment specifications and physical configuration matter. Built to last and engineered for consistent operation, the TJD422350 remains a dependable solution for maintaining electrical protection in demanding environments.

Key Features and Benefits

• 350 Amp Capacity: Designed for high-current commercial and industrial applications.
• 2-Pole Configuration: Designed for compatible 240VAC systems.
• 22kA A.I.C. Rating at 240VAC: Helps provide protection during fault conditions.
• Bolt-On Mounting Design: Supports secure and stable installation.
• Internal Common Trip Mechanism: Disconnects both poles simultaneously during overload or short circuit events.
• HACR Rated: Suitable for heating, air conditioning, and refrigeration applications.
• Q-Line Compatible: Designed for use in existing compatible distribution equipment.
• Includes Load-Side Lugs: Helps simplify installation and conductor termination.
• Older Style Black Face Design: Helps maintain compatibility with legacy systems and existing equipment layouts.
  

Technical Specifications

• Part Number: TJD422350
  
• Style: Older Style Black Face
  
• Manufacturer Series: Q-Line
  
• Breaker Type: Molded Case Circuit Breaker
  
• Type: TJD
  
• Poles: 2
  
• Amperes: 350A
  
• Voltage Rating: 240VAC
  
• A.I.C. Rating: 22kA @ 240VAC
  
• Mounting Type: Bolt-On
  
• Trip Type: Internal Common Trip
  
• HACR Rated: Yes
  
• Included Accessories: Load-Side Lugs
  
• Dimensions:
  • Height: 10.13 in
  • Width: 8.25 in
  • Depth: 3.81 in

Material Compliance and Certifications

• HACR Rated: Approved for applicable HVAC system installations.
• Commercial and Industrial Use: Manufactured for use in compatible commercial and industrial electrical distribution systems.
• Operational Standards: Designed to meet applicable molded case circuit breaker construction and operational standards for its class and rating.
  

Where It Works Best

• The TJD422350 circuit breaker is well suited for commercial panelboards and distribution systems, industrial power distribution equipment, HVAC and refrigeration system disconnect protection, manufacturing facilities and processing equipment, electrical systems requiring a compatible Q-Line Type TJD breaker, and maintenance and replacement projects involving older style black face breaker configurations. Its combination of high amperage capacity, bolt-on installation, and compatibility with existing systems makes it a practical choice for maintaining and servicing established electrical infrastructure.