TJJ436125 **Older Style** - 125Amp Circuit Breaker

TJJ436125 **Older Style** - 125 Amp Circuit Breaker

The TJJ436125 Older Style Black Face molded case circuit breaker is designed for dependable protection in your commercial and industrial electrical distribution systems where maintaining compatibility with existing equipment matters. Built as part of the Q-Line family, this 3-pole, 125-amp breaker features a thermal magnetic trip unit with internal common trip functionality to help you protect circuits from overloads and short circuits. Its bolt-on mounting design provides a secure connection inside compatible panelboards and switchgear applications, while the included load-side lugs help simplify installation. With interrupting ratings of 22k @ 600VAC, 30k @ 480VAC, and 42k @ 240VAC, the TJJ436125 is well-suited for demanding power distribution environments that require reliable circuit protection and consistent operation. The older style black face configuration also makes it a practical form, fit, and functional replacement for existing legacy electrical systems already using this breaker style.

Key Features and Benefits

• 125 Amp, 3-Pole Molded Case Circuit Breaker: Built for dependable circuit protection in commercial and industrial electrical distribution systems.
• Older Style Black Face Design: Designed for compatibility with existing installations using legacy breaker configurations.
• Q-Line Series Bolt-On Mounting Configuration: Provides a secure connection inside compatible panelboards and switchgear applications.
• Thermal Magnetic Trip Unit: Features a non-interchangeable trip design with internal common trip functionality to help protect circuits from overloads and short circuits.
• HACR Rated: Approved for heating, air conditioning, and refrigeration applications.
• Includes Load-Side Lugs: Helps simplify installation and connection requirements.
• Built for Long-Term Use: Designed for ongoing operation in commercial and industrial power systems while supporting continuity in legacy electrical distribution equipment.
  

Technical Specifications

• Part Number: TJJ436125
  
• Type: TJJ
  
• Frame Style: Molded Case Circuit Breaker
  
• Mounting Type: Bolt-On
  
• Poles: 3
  
• Amperage Rating: 125 Amps
  
• Trip Unit: Thermal Magnetic, Non-Interchangeable
  
• Trip Configuration: Internal Common Trip
  
• Interrupting Rating:
  • 22k A.I.C. @ 600VAC
  • 30k A.I.C. @ 480VAC
  • 42k A.I.C. @ 240VAC
• Dimensions:
  • Height: 10.13 in.
  • Width: 8.25 in.
  • Depth: 3.81 in.
• Included Accessories: Load-Side Lugs
  
• Series: Q-Line
  
• HACR Rated: Yes
  

Material Compliance and Certifications

• HACR Rated: Approved for HVAC and refrigeration system applications.
• Commercial and Industrial Use: Manufactured for use in commercial and industrial electrical distribution systems.
• Construction and Operational Standards: Designed to meet applicable molded case circuit breaker construction and operational standards for its class and configuration.
  

Where It Works Best

• The TJJ436125 circuit breaker is commonly used in commercial buildings, manufacturing facilities, distribution panels, HVAC equipment, and industrial power systems requiring a 125A, 3-pole breaker with bolt-on installation. It is especially useful in applications where maintaining compatibility with older electrical equipment is important. The older style black face configuration helps support proper fit and appearance in existing Q-Line installations without requiring panel modifications or equipment changes.