TJD422400 **Older Style** 400A Circuit Breaker

TJD422400 **Older Style** 400A Circuit Breaker

The TJD422400 Older Style Black Face molded case circuit breaker is designed for your dependable circuit protection in commercial and industrial electrical distribution systems. Built as part of the trusted Q-Line family, this 2-pole, 400-amp breaker provides internal common trip protection. It is configured for bolt-on installation, making it well-suited for existing panelboard and switchgear applications that require a compatible replacement component. Its HACR rating supports use in heating, air conditioning, and refrigeration equipment, while the included load-side lugs help you to simplify installation and field connections. Designed for long-term service environments, this breaker delivers the form, fit, and function needed for maintaining legacy electrical systems operating at up to 240VAC with a 22k A.I.C. interrupting rating.

Key Features and Benefits

• 400-amp Molded Case Circuit Breaker: Designed for commercial and industrial power distribution.
• 2-Pole Configuration: Includes an internal common trip for coordinated circuit interruption.
• Older Style Black Face Design: Compatible with select existing Q-Line systems.
• Bolt-On Mounting: Helps provide secure installation in compatible electrical equipment.
• HACR Rated: Suitable for applications involving HVAC and refrigeration systems.
• Includes Load-Side Lugs: Helps simplify field wiring connections.
• Built for Lasting Service: Designed for demanding electrical environments.
• Equipment Protection: Helps protect connected equipment from overloads and short circuits.
• Maintenance and Retrofit Applications: Suitable for projects requiring matching specifications and configuration.
  

Technical Specifications

• Part Number: TJD422400
  
• Product Type: Molded Case Circuit Breaker
  
• Series / Type: TJD
  
• Face Style: Older Style Black Face
  
• Mounting Type: Bolt-On
  
• Poles: 2
  
• Amperage Rating: 400 Amps
  
• Voltage Rating: 240VAC
  
• A.I.C. Rating: 22k @ 240VAC
  
• 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: Suitable for heating, air conditioning, and refrigeration applications.
• Industry Standards: Manufactured for use in accordance with applicable molded case circuit breaker standards.
• Compatible Equipment Use: Intended for use in properly rated and compatible electrical distribution equipment.
• Commercial and Industrial Protection: Designed to meet industry expectations for commercial and industrial electrical protection components.
  

Where It Works Best

• The TJD422400 circuit breaker is commonly used in commercial buildings, industrial facilities, manufacturing operations, HVAC systems, and electrical distribution equipment that require a 2-pole, 400-amp breaker with bolt-on mounting. It is especially useful in maintenance and retrofit applications where matching the existing breaker style, dimensions, and electrical ratings is important for system compatibility.