THJK436250WL - 250Amp Circuit Breaker

THJK436250WL - 250 Amp Circuit Breaker

The THJK436250WL is a 250 Amp, 3-pole molded case circuit breaker designed for use in your commercial and industrial electrical distribution systems requiring dependable overcurrent protection. Built as part of the THJK4 Q-Line series, this thermal magnetic circuit breaker features an internal common trip mechanism and a non-interchangeable trip unit, helping protect conductors and connected equipment from overloads and short circuits. Its cable-in/cable-out (lug-lug) configuration includes both line-side and load-side lugs, simplifying installation in compatible switchboards, panelboards, and distribution equipment.

Engineered for demanding electrical applications, the THJK436250WL offers interrupting ratings of 25kA at 600VAC, 35kA at 480VAC, and 65kA at 240VAC, making it suitable for a wide range of power distribution environments. The breaker is also HACR rated, allowing use in heating, air conditioning, and refrigeration applications where equipment specifications permit. Built with a durable molded case design, this breaker provides a reliable form, fit, and functional replacement solution for maintaining existing electrical systems while delivering the protection expected in commercial and industrial facilities.

Key Features and Benefits

• 250 Amp Continuous Current Rating: 250 Amp continuous current rating.
• 3-Pole Configuration: 3-pole configuration for three-phase electrical systems.
• THJK4 Q-Line Design: THJK4 Q-Line molded case circuit breaker design.
• Thermal Magnetic Trip Unit: Thermal magnetic trip unit provides protection against overloads and short circuits.
• Internal Common Trip Mechanism: Internal common trip mechanism enhances circuit protection.
• Cable-In/Cable-Out Construction: Cable-in/cable-out (lug-lug) construction.
• Included Lugs: Includes both line-side and load-side lugs.
• HACR Rated: HACR rated for compatible HVAC and refrigeration applications.
• Commercial and Industrial Use: Suitable for commercial and industrial power distribution systems.
• Built for Demanding Environments: Built for long-term service in demanding electrical environments.
  

Technical Specifications

• Part Number: THJK436250WL
  
• Type: THJK4
  
• Series: Q-Line
  
• Circuit Breaker Type: Molded Case Circuit Breaker
  
• Trip Unit: Thermal Magnetic
  
• Trip Configuration: Internal Common Trip
  
• Poles: 3
  
• Amperage Rating: 250A
  
• Voltage / Interrupting Rating: 25kA @ 600VAC
  
• Voltage / Interrupting Rating: 35kA @ 480VAC
  
• Voltage / Interrupting Rating: 65kA @ 240VAC
  
• Connection Type: Cable-In/Cable-Out (Lug-Lug)
  
• Included Accessories: Line-Side and Load-Side Lugs
  
• Dimensions:
  • Height: 10.13 in.
  • Width: 8.25 in.
  • Depth: 3.81 in.
• HACR Rated: Yes
  

Material Compliance and Certifications

• HACR Rated: HACR Rated for use in compatible heating, air conditioning, and refrigeration applications.
• Industry Standards: Manufactured and tested to applicable industry standards for molded case circuit breakers.
• Application Compliance: Designed for use in commercial and industrial electrical distribution equipment requiring listed and properly rated overcurrent protection devices.
  

Where It Works Best

• The THJK436250WL is well-suited for commercial buildings, industrial facilities, manufacturing operations, distribution equipment, and large electrical systems requiring a 250 Amp, 3-pole molded case circuit breaker. Its lug-lug design makes it a practical choice for installations where direct cable terminations are required, while the thermal magnetic trip characteristics provide dependable protection for feeders, distribution circuits, HVAC equipment, motor loads, and other power distribution applications within compatible systems.