TJJ436150 **Older Style** - 150Amp Circuit Breaker

TJJ436150 **Older Style** - 150 Amp Circuit Breaker

The TJJ436150 molded case circuit breaker is designed for dependable circuit protection in your commercial and industrial electrical distribution systems where compatibility with existing equipment matters. This 3-pole, 150-amp breaker features the recognizable older style black face configuration and is built with a thermal magnetic trip unit and internal common trip mechanism to help protect connected systems from overloads and short circuits. As part of the Q-Line family, this bolt-on circuit breaker is commonly used in panelboards and switchgear applications that require a direct replacement matching original specifications and mounting requirements.

Built to last and engineered for consistent operation, the TJJ436150 includes load-side lugs for installation convenience and carries an HACR rating, making it suitable for heating, air conditioning, and refrigeration equipment applications. Its non-interchangeable trip unit design helps you to maintain the original protection characteristics intended for compatible systems. With interrupting ratings of 22kA at 600VAC, 30kA at 480VAC, and 42kA at 240VAC, this breaker is well-suited for demanding power distribution environments where proper fault protection is essential. Whether maintaining legacy electrical infrastructure or replacing worn components, the TJJ436150 provides the form, fit, and function required for continued system operation.

Key Features and Benefits

• 150 Amp Continuous Current Rating: For commercial and industrial power distribution applications.
• 3-Pole Configuration: Designed for three-phase electrical systems.
• Older Style Black Face Design: For compatibility with existing installations and legacy equipment.
• Thermal Magnetic Trip Unit: Helps protect against overloads and short circuits.
• Internal Common Trip Mechanism: Disconnects all poles simultaneously during fault conditions.
• Bolt-On Mounting Style: Provides secure installation in compatible panelboards and switchgear.
• Q-Line Series Breaker: Designed for use in designated distribution systems.
• HACR Rated: For heating, ventilation, air conditioning, and refrigeration applications.
• Includes Load-Side Lugs: To simplify installation and wiring connections.
• Built for Long-Term Service: In demanding electrical environments.
  

Technical Specifications

• Part Number: TJJ436150
  
• Type: TJJ
  
• Product Style: Older Style Black Face
  
• Circuit Breaker Type: Molded Case Circuit Breaker
  
• Mounting Style: Bolt-On
  
• Poles: 3
  
• Amperes: 150A
  
• Trip Unit: Thermal Magnetic
  
• Trip Design: Non-Interchangeable with Internal Common Trip
  
• A.I.C. Rating:
  • 22kA @ 600VAC
  • 30kA @ 480VAC
  • 42kA @ 240VAC
• Series: Q-Line
  
• HACR Rated: Yes
  
• Included Connections: Load-Side Lugs
  
• Dimensions:
  • Height: 10.13 in
  • Width: 8.25 in
  • Depth: 3.81 in

Material Compliance and Certifications

• HACR Rated: For HVAC and refrigeration system applications.
• Commercial and Industrial Use: Designed and manufactured for use in compatible commercial and industrial electrical distribution systems.
• Thermal Magnetic Protection: Designed to support standard overcurrent protection requirements.
• Professional Installation: Intended for installation by qualified electrical professionals following applicable local and national electrical codes.
  

Where It Works Best

• The TJJ436150 is commonly used in commercial buildings, industrial facilities, manufacturing environments, electrical distribution panels, HVAC and refrigeration systems, legacy switchgear and panelboard installations requiring an older-style black face breaker, and maintenance and replacement projects where matching the existing breaker form and fit is important. This breaker is especially useful for facilities maintaining existing electrical infrastructure and seeking a compatible replacement that aligns with original system specifications and mounting configurations.