TJK426250 - 250Amp Circuit Breaker

TJK426250 - 250 Amp Circuit Breaker

The TJK426250 molded case circuit breaker is used in your commercial and industrial electrical systems that require dependable overcurrent protection for higher-capacity circuits. Built as part of the Q-Line series, this 2-pole, 250-amp breaker uses a thermal magnetic trip unit to respond to overloads and short circuits. The internal common trip design allows both poles to trip together during a fault condition, helping you to protect connected equipment and branch circuits.

This breaker features a bolt-on mounting style for a secure connection in compatible panelboards and distribution equipment. Load-side lugs are included to help streamline installation and wiring. Its HACR rating also makes it suitable for heating, ventilation, air conditioning, and refrigeration systems where these specifications are required. With a compact molded case design and solid construction, the TJK426250 is often selected for service replacements, maintenance projects, and existing electrical systems that require matching form and fit compatibility.

Key Features and Benefits

• 250 amp molded case circuit breaker: Built for commercial and industrial electrical systems requiring dependable overcurrent protection for higher-capacity circuits.
• 2-pole design: Designed for use in compatible AC power systems requiring dual-pole circuit protection.
• Thermal magnetic trip unit: Responds to overloads and short circuits to help protect connected equipment and branch circuits.
• Internal common trip mechanism: Allows both poles to trip together during a fault condition for coordinated circuit interruption.
• Bolt-on mounting configuration: Provides a secure connection in compatible panelboards and distribution equipment.
• Includes load-side lugs: Helps streamline installation and wiring during service or replacement work.
• HACR rated: Suitable for heating, ventilation, air conditioning, and refrigeration systems where HACR specifications are required.
• Q-Line compatibility: Designed for use in compatible Q-Line electrical systems.
• Commercial and industrial durability: Built for long-term use in demanding electrical environments.
  

Technical Specifications

• Part Number: TJK426250
  
• Series: Q-Line
  
• Type: TJK4
  
• Poles: 2
  
• Amperage: 250A
  
• Trip Unit: Non-Interchangeable Thermal Magnetic
  
• Mounting: Bolt-On
  
• Interrupting Rating:
  • 22kA @ 600VAC
  • 30kA @ 480VAC
  • 42kA @ 240VAC
• Dimensions:
  • Height: 10.13 in.
  • Width: 8.25 in.
  • Depth: 3.81 in.
• Included: Load-Side Lugs
  

Material Compliance and Certifications

• HACR Rated: Suitable for heating, ventilation, air conditioning, and refrigeration applications.
• Commercial and Industrial Use: Intended for use in properly rated commercial and industrial electrical systems.
• Standards Alignment: Manufactured to align with applicable molded case circuit breaker standards.
• Overcurrent Protection Applications: Suitable for applications requiring listed overcurrent protection devices with matching ratings and configuration.
  

Where It Works Best

• The TJK426250 is commonly used in commercial facilities, industrial buildings, HVAC equipment, distribution panels, and other power distribution systems requiring 250-amp circuit protection. It works well in existing installations where a Q-Line bolt-on breaker with matching specifications is needed for replacement or maintenance purposes.