TJD432300 - 300Amp Circuit Breaker

TJD432300 - 300 Amp Circuit Breaker

The TJD432300 molded case circuit breaker is designed for dependable circuit protection in your commercial and industrial electrical distribution systems that require a 300-amp, 3-pole breaker configuration. Built as part of the trusted Q-Line series, this breaker features an internal common trip mechanism that helps you to disconnect all poles simultaneously during overloads or short circuits, supporting safer operation across connected equipment. Its bolt-on mounting design allows for secure installation in compatible panelboards and switchgear applications, while the included load-side lugs simplify conductor termination during maintenance or replacement projects.

With a 22kA interrupting capacity at 240VAC, the TJD432300 is well-suited for facilities that demand consistent protection for feeders, HVAC systems, motor loads, and distribution equipment. The HACR rating makes it appropriate for heating, air conditioning, and refrigeration applications commonly found in manufacturing facilities, commercial buildings, and multi-unit properties. Built to handle demanding electrical environments, this molded case circuit breaker is engineered for long-term service life while maintaining compatibility with existing systems where form, fit, and function matter most.

Key Features and Benefits

• 300 Amp Current Rating: For heavy-duty commercial and industrial power distribution
• 3-Pole Configuration: Designed for three-phase electrical systems
• 22kA @ 240VAC Interrupting Rating: Helps protect equipment during fault conditions
• Bolt-On Mounting Style: Supports secure and stable installation
• Internal Common Trip Mechanism: Disconnects all poles simultaneously during an overcurrent event
• HACR Rated: For use with heating, air conditioning, and refrigeration equipment
• Includes Load-Side Lugs: For convenient wiring connections
• Part of the Q-Line Family: Widely used in commercial electrical applications
• Built for Lasting Service: In demanding electrical environments
  

Technical Specifications

• Part Number: TJD432300
  
• Type: TJD
  
• Product Category: Molded Case Circuit Breaker
  
• Series: Q-Line
  
• Mounting Style: Bolt-On
  
• Poles: 3
  
• Amperage Rating: 300A
  
• Voltage Rating: 240VAC
  
• Interrupting Capacity: 22kA @ 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

• Commercial and Industrial Compliance: The TJD432300 circuit breaker is manufactured for use in commercial and industrial electrical systems where compliance with applicable electrical standards is essential.
• HACR Certification: Its HACR certification supports use in HVAC and refrigeration equipment applications. Proper installation and application should always follow local electrical codes, equipment manufacturer requirements, and system specifications.
  

Where It Works Best

• The TJD432300 is commonly used in commercial buildings and office facilities, industrial power distribution systems, HVAC and refrigeration equipment circuits, manufacturing and processing facilities, electrical panelboards and switchgear, replacement projects requiring compatible Q-Line bolt-on breakers, and three-phase feeder and branch circuit protection applications. Its combination of bolt-on installation, common trip protection, and 300A capacity makes it a practical solution for maintaining and servicing existing electrical infrastructure that requires dependable circuit protection.