THFK236150 **Older Style** - 150 Amp Circuit Breaker

THFK236150 **Older Style** - 150 Amp Circuit Breaker

The THFK236150 molded case circuit breaker is a 3-pole, 150-amp industrial circuit breaker designed for use in your power distribution systems requiring dependable overcurrent and short-circuit protection. Built on the F225 line molded case frame, this breaker features an interchangeable thermal magnetic trip unit, allowing for protection against both sustained overloads and instantaneous fault conditions. The older style black face configuration makes it well-suited for maintaining compatibility with existing electrical systems where matching form, fit, and function is important.

Engineered for commercial and industrial applications, the THFK236150 offers interrupting ratings of 18kA at 600VAC, 25kA at 480VAC, and 65kA at 240VAC, helping you to protect equipment and electrical infrastructure from damaging fault currents. The breaker includes load-side lugs for installation convenience and is designed to provide reliable circuit protection in switchboards, panelboards, motor control centers, and other distribution equipment. Built to last, this molded case circuit breaker remains a practical solution for maintaining and servicing established electrical systems.

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 THFK Molded Case Circuit Breaker: Type THFK molded case circuit breaker.
• Older Style Black Face Design: Older style black face design for compatibility with existing installations.
• F225 Line Molded Case Frame Construction: F225 line molded case frame construction.
• Interchangeable Thermal Magnetic Trip Unit: Interchangeable thermal magnetic trip unit provides overload and short-circuit protection.
• Includes Load-Side Lugs: Includes load-side lugs for simplified installation.
• Designed for Commercial, Industrial, and Facility Electrical Systems: Designed for commercial, industrial, and facility electrical systems.
• Built to Provide Long Service Life: Built to provide long service life in demanding environments.
• Suitable as a Form, Fit, and Function Replacement: Suitable as a form, fit, and function replacement in compatible equipment.

Technical Specifications

• Part Number: THFK236150
  
• Type: THFK
  
• Frame: F225 Line Molded Case
  
• Trip Unit: Interchangeable Thermal Magnetic
  
• Poles: 3
  
• Amperage: 150A
  
• Voltage & Interrupting Rating:
  • 18kA @ 600VAC
  • 25kA @ 480VAC
  • 65kA @ 240VAC
• Dimensions:
  • Height: 10.13 in.
  • Width: 4.13 in.
  • Depth: 3.81 in.
• Included Accessories: Load-Side Lugs
  
• Face Style: Older Style Black Face
  

Material Compliance and Certifications

• Industry Standards: This molded case circuit breaker was manufactured for use in commercial and industrial electrical distribution systems and was designed to meet applicable industry standards in effect at the time of production.
• Compliance Verification: Users should verify compliance requirements, certifications, and application suitability based on the specific installation, equipment specifications, and local electrical codes.
  

Where It Works Best

• The THFK236150 circuit breaker is commonly used in industrial manufacturing facilities, commercial buildings, power distribution equipment, switchboards and panelboards, motor control centers, processing plants, utility and infrastructure applications, and maintenance and replacement projects involving compatible legacy electrical systems. Its combination of a 150-amp rating, three-pole configuration, and thermal magnetic protection makes it a suitable choice wherever dependable overcurrent protection is required in established commercial and industrial power systems.