THJK626500WL - 500Amp Circuit Breaker

THJK626500WL - 500 Amp Circuit Breaker

The THJK626500WL is a 500-amp, 2-pole molded-case circuit breaker designed for use in your Q-Line distribution systems where dependable overcurrent protection is required for high-capacity electrical installations. Built with a non-interchangeable thermal-magnetic trip unit and an internal common trip mechanism, this breaker helps protect your conductors and connected equipment from overloads and short circuits while maintaining reliable circuit-interrupting capability. Its cable-in/cable-out (lug-lug) configuration includes both line-side and load-side lugs, simplifying installation in compatible switchboards, panelboards, and power distribution equipment. Designed for long service life, the THJK626500WL provides the form, fit, and function needed for maintaining existing electrical systems that require a THJK6-frame breaker.

The THJK626500WL is ideal for commercial and industrial power distribution applications and offers substantial interrupting capacity with ratings of 25 kA at 600 VAC, 35 kA at 480 VAC, and 65 kA at 240 VAC. The HACR rating makes it suitable for applications involving heating, air conditioning, and refrigeration equipment that require code-compliant circuit protection. Its durable molded-case construction is built to withstand the demands of everyday operation while helping to maintain system safety and continuity.

Key Features and Benefits

• 500 Amp Continuous Current Rating: Provides dependable overcurrent protection for high-capacity electrical installations.
• 2-Pole Configuration: Designed for the protection of two energized conductors.
• THJK6 Frame Molded Case Circuit Breaker: Provides the form, fit, and function needed for maintaining existing electrical systems that require a THJK6-frame breaker.
• Non-Interchangeable Thermal Magnetic Trip Unit: Helps protect conductors and connected equipment from overloads and short circuits.
• Internal Common Trip Mechanism: Provides coordinated pole operation.
• Cable-In / Cable-Out (Lug-Lug) Design: Simplifies installation in compatible switchboards, panelboards, and power distribution equipment.
• Includes Line-Side and Load-Side Lugs: Ready for installation in compatible applications.
• HACR Rated: Suitable for HVAC and refrigeration-related applications.
• Designed for Use in Compatible Q-Line Power Distribution Systems: Supports system compatibility requirements.
• Built for Long-Term Durability: Intended for commercial and industrial environments.

Technical Specifications

• Part Number: THJK626500WL
• Type: THJK6
• Current Rating: 500 Amps
• Poles: 2
• Interrupting Rating: 25kA @ 600VAC
• Interrupting Rating: 35kA @ 480VAC
• Interrupting Rating: 65kA @ 240VAC
• Trip Unit: Thermal Magnetic
• Trip Style: Non-Interchangeable
• Trip Mechanism: Internal Common Trip
• Configuration: Cable-In / Cable-Out (Lug-Lug)
• Included Accessories: Line and Load-Side Lugs
• HACR Rated: Yes
• Dimensions:
  • Height: 10.13 in.
  • Width: 8.25 in.
  • Depth: 3.81 in.

Material Compliance and Certifications

• HACR Rated: Rated for heating, air conditioning, and refrigeration applications.
• Industry Standards: Manufactured and tested to applicable industry standards for molded case circuit breakers.
• Compliant Overcurrent Protection: Designed for use in electrical distribution systems requiring compliant overcurrent protection.
• Installation Compatibility: Suitable for installation in compatible equipment when applied according to applicable electrical codes and manufacturer specifications.

Where It Works Best

• The THJK626500WL is commonly used in commercial buildings, industrial facilities, manufacturing plants, institutional properties, and large-scale electrical distribution systems requiring a 500A, 2-pole circuit breaker. Its lug-lug configuration makes it well-suited for feeder circuits, distribution equipment, and HVAC-related installations where dependable overcurrent protection and compatibility with existing Q-Line equipment are essential. This breaker is particularly useful when maintaining or servicing installed electrical infrastructure that utilizes THJK6-frame circuit breakers.