THJK436150 - 150Amp Circuit Breaker

THJK436150 - 150 Amp Circuit Breaker

The THJK436150 is a 150-amp, 3-pole molded-case circuit breaker designed for dependable circuit protection in your commercial, industrial, and institutional electrical distribution systems. Built as part of the Q-Line family, this Type THJK4 breaker features a thermal-magnetic trip unit, an internal common trip, and a non-interchangeable trip design to help protect conductors and connected equipment from overloads and short circuits. Its bolt-on mounting configuration provides a secure installation, while the included load-side lugs simplify field connections. Designed for long service life and consistent operation, the THJK436150 is well-suited for applications requiring reliable overcurrent protection in panelboards, switchboards, and distribution equipment operating at up to 600 VAC.

With interrupting ratings of 25kA at 600VAC, 35kA at 480VAC, and 65kA at 240VAC, this breaker is engineered to meet the demands of a wide range of power distribution environments. The HACR rating makes it suitable for heating, air conditioning, and refrigeration equipment where permitted by applicable electrical codes and equipment specifications. Whether used in maintenance projects, facility upgrades, or as a direct replacement within compatible systems, the THJK436150 provides the form, fit, and function required for dependable circuit protection.

Key Features and Benefits

• 150 Amp Current Rating: 150 Amp current rating for medium- to high-capacity electrical distribution systems.
• 3-Pole Configuration: 3-pole configuration for three-phase power applications.
• Type THJK4 Design: Type THJK4 molded case circuit breaker design.
• Thermal Magnetic Trip Unit: The thermal magnetic trip unit protects against overloads and short circuits.
• Internal Common Trip: The internal common trip mechanism disconnects all poles simultaneously during fault conditions.
• Bolt-On Mounting: Bolt-on mounting design for secure installation in compatible equipment.
• Q-Line Series Compatibility: Q-Line series compatibility.
• HACR Rated: HACR rated for qualifying heating, ventilation, air conditioning, and refrigeration applications.
• Included Load-Side Lugs: Includes load-side lugs for simplified conductor termination.
• Built for Durability: Built for long-term durability and dependable operation.

Technical Specifications

• Part Number: THJK436150
  
• Type: THJK4
  
• Product Family: Q-Line
  
• Circuit Breaker Type: Molded Case Circuit Breaker
  
• Poles: 3
  
• Amperage Rating: 150 Amps
  
• Trip Unit: Thermal Magnetic
  
• Trip Configuration: Internal Common Trip
  
• Trip Design: Non-Interchangeable
  
• Mounting Style: Bolt-On
  
• A.I.C. Rating @ 240VAC: 65kA
  
• A.I.C. Rating @ 480VAC: 35kA
  
• A.I.C. Rating @ 600VAC: 25kA
  
• 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

• HACR Rated: HACR Rated.
• Industry Standards: Designed and manufactured to meet applicable industry standards for molded case circuit breakers.
• Equipment Compatibility: Suitable for installation in properly rated and compatible electrical distribution equipment.
• Code Compliance: Intended for use in accordance with applicable electrical codes and manufacturer specifications.

Where It Works Best

• The THJK436150 is commonly used in commercial buildings, manufacturing facilities, institutional campuses, multi-unit properties, and other environments requiring dependable three-phase power distribution. It is particularly well suited for panelboards, switchboards, feeder circuits, HVAC equipment, motor loads, and other applications where a 150-amp, 3-pole circuit breaker with thermal-magnetic protection and high interrupting capacity is required. Its bolt-on construction and included load-side lugs make it a practical choice for maintaining or replacing compatible circuit protection devices in existing electrical systems.