TJD432400 - 400Amp Circuit Breaker

TJD432400 - 400 Amp Circuit Breaker

The TJD432400 molded case circuit breaker is designed for dependable circuit protection in your commercial and industrial electrical distribution systems that require a 400-amp, 3-pole configuration. Built as part of the Q-Line family, this Type TJD breaker features an internal common trip mechanism that helps you disconnect all poles simultaneously during overloads or short circuits, supporting safer system operation and equipment protection. Its bolt-on mounting design provides a secure installation in compatible panelboards and switchgear. At the same time, the included load-side lugs help you to simplify conductor termination during maintenance or replacement projects.

With a 22kA interrupting rating at 240VAC, the TJD432400 is well-suited for facilities operating demanding electrical loads such as HVAC systems, motor control applications, manufacturing equipment, and commercial distribution panels. The breaker is also HACR-rated, making it appropriate for heating, air conditioning, and refrigeration applications that require dependable overcurrent protection. Designed for long service life and consistent operation, this molded case circuit breaker offers the form, fit, and function needed for maintaining existing electrical systems and infrastructure.

Key Features and Benefits

• 400 Amp Current Rating: For medium-to-large commercial and industrial electrical systems.
• 3-Pole Configuration: Supports three-phase power distribution applications.
• 22kA Interrupting Capacity at 240VAC: Helps protect equipment during fault conditions.
• Bolt-On Mounting Design: Provides secure installation in compatible equipment.
• Internal Common Trip Mechanism: Disconnects all poles simultaneously during overloads or short circuits.
• HACR Rated: For HVAC and refrigeration-related applications.
• Includes Load-Side Lugs: For convenient field installation and conductor connection.
• Built for Lasting Service: In demanding electrical environments.
  

Technical Specifications

• Part Number: TJD432400
  
• Type: TJD
  
• Product Family: Q-Line
  
• Poles: 3
  
• Amperage: 400A
  
• Voltage Rating: 240VAC
  
• A.I.C. Rating: 22kA @ 240VAC
  
• Mounting Style: 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: For heating, air conditioning, and refrigeration applications.
• Manufactured for Use: In compatible commercial and industrial electrical distribution systems.
• Molded Case Construction: Designed for durable operational performance.
• Suitable for Applications: Requiring properly rated overcurrent protection equipment.
  

Where It Works Best

• The TJD432400 circuit breaker is commonly used in commercial buildings and office facilities, industrial power distribution systems, HVAC and refrigeration equipment circuits, manufacturing and processing facilities, motor control and branch circuit protection, electrical panelboards and switchgear assemblies, and maintenance and replacement projects involving compatible legacy systems.