THJK436250 - 250Amp Circuit Breaker

THJK436250 - 250 Amp Circuit Breaker

The THJK436250 molded case circuit breaker is a 3-pole, 250-amp circuit protection device designed for use in your commercial, industrial, and large-scale electrical distribution systems. As part of the Q-Line™ THJK4 series, this bolt-on circuit breaker features a thermal magnetic trip unit, internal common trip, and non-interchangeable trip design, helping provide dependable overcurrent and short-circuit protection for connected equipment and conductors. Built to last and engineered for compatibility within designated power distribution assemblies, the THJK436250 is well-suited for applications requiring high interrupting capacity and reliable circuit protection. The breaker includes load-side lugs for installation convenience and is HACR rated, making it suitable for heating, air conditioning, and refrigeration equipment applications where permitted by code and equipment requirements.

Key Features and Benefits

• 250 Amp Current Rating: 250 Amp current rating for high-capacity electrical distribution applications.
• 3-Pole Configuration: 3-pole configuration for three-phase power systems.
• Type THJK4 Design: Type THJK4 molded case circuit breaker.
• Bolt-On Mounting: Bolt-on mounting design helps provide secure installation.
• Thermal Magnetic Trip Unit: Thermal magnetic trip unit offers protection against overloads and short circuits.
• Internal Common Trip: Internal common trip mechanism disconnects all poles simultaneously during fault conditions.
• Non-Interchangeable Trip Design: Non-interchangeable trip unit design.
• HACR Rated: HACR rated for use with heating, air conditioning, and refrigeration equipment applications.
• Load-Side Lugs Included: Includes load-side lugs for added installation convenience.
• Q-Line Compatibility: Designed for use in compatible Q-Line™ electrical distribution equipment.
• High Interrupting Capacity: High interrupting capacity ratings for demanding commercial and industrial environments.
  

Technical Specifications

• Part Number: THJK436250
  
• Type: THJK4
  
• Product Category: Molded Case Circuit Breaker
  
• Series: Q-Line
  
• Mounting Style: Bolt-On
  
• Poles: 3
  
• Amperage Rating: 250A
  
• Trip Unit: Thermal Magnetic
  
• Trip Design: Non-Interchangeable
  
• Common Trip: Internal Common Trip
  
• HACR Rated: Yes
  
• Included Accessories: Load-Side Lugs
  
• Dimensions:
  • Height: 10.13 in.
  • Width: 8.25 in.
  • Depth: 3.81 in.
• Interrupting Rating @ 600VAC: 25kA
  
• Interrupting Rating @ 480VAC: 35kA
  
• Interrupting Rating @ 240VAC: 65kA
  

Material Compliance and Certifications

• HACR Rated: HACR Rated.
• Industry Standards: Manufactured for use in accordance with applicable industry standards and installation practices.
• System Compatibility: Designed for use in compatible electrical distribution systems and equipment as specified by the manufacturer.
• Application Verification: Consult equipment documentation and local electrical codes to verify suitability for your specific application.
  

Where It Works Best

• The THJK436250 250A circuit breaker is commonly used in commercial buildings, industrial facilities, manufacturing operations, distribution equipment, motor control systems, and large electrical service installations requiring dependable overcurrent protection. Its combination of a 3-pole design, thermal magnetic trip operation, and high interrupting ratings makes it a practical choice for protecting feeders, distribution circuits, HVAC equipment, and other three-phase electrical loads in compatible Q-Line applications.