TJJ436125WL **Older Style** - 125Amp Circuit Breaker

TJJ436125WL **Older Style** - 125 Amp Circuit Breaker

The TJJ436125WL Older Style Black Face molded case circuit breaker is designed for dependable protection in your commercial and industrial electrical distribution systems where consistent circuit interruption and equipment protection matter most. Built as part of the trusted Q-Line family, this 3-pole, 125-amp breaker features a thermal magnetic trip unit with internal common trip functionality to help you safeguard connected systems against overloads and short circuits. Its cable-in/cable-out lug-lug configuration allows for straightforward installation in compatible legacy switchgear and panel applications, making it a practical form, fit, and functional replacement solution for maintaining existing electrical infrastructure. With included line and load-side lugs plus HACR rating support, this breaker is commonly used in HVAC applications, manufacturing facilities, commercial buildings, and power distribution setups that require reliable overcurrent protection at up to 600VAC. The older style black face design also helps ensure visual compatibility in existing equipment configurations where matching installed components may be important.

Key Features and Benefits

• 125 Amp molded case circuit breaker: Designed for commercial and industrial power distribution.
• 3-pole configuration: Designed for three-phase electrical systems.
• Older Style Black Face design: Supports compatibility with legacy installations.
• Q-Line series construction: Provides dependable fit and function.
• Thermal magnetic trip unit: Helps protect against overloads and short circuits.
• Internal common trip mechanism: Enhances coordinated circuit interruption.
• Cable-in/Cable-out (Lug-Lug) connection style: Supports secure wiring termination.
• Includes line-side and load-side lugs: Provides installation-ready connection hardware.
• HACR rated: Suitable for heating, air conditioning, and refrigeration equipment applications.
• Built for demanding electrical environments: Designed for long-term service in commercial and industrial applications.
  

Technical Specifications

• Part Number: TJJ436125WL
  
• Type: TJJ
  
• Frame Style: Older Style Black Face
  
• Poles: 3
  
• Amperage: 125A
  
• Dimensions:
  • Height: 10.13 in.
  • Width: 8.25 in.
  • Depth: 3.81 in.
• Interrupting Capacity (A.I.C. Rating):
  • 22kA @ 600VAC
  • 30kA @ 480VAC
  • 42kA @ 240VAC
• Connection Type: Cable-in/Cable-out (Lug-Lug)
  
• Trip Unit: Non-Interchangeable Thermal Magnetic
  
• Trip Style: Internal Common Trip
  
• Series: Q-Line
  
• Included Accessories: Line and Load-Side Lugs
  
• Application Rating: HACR Rated
  

Material Compliance and Certifications

• HACR Rated: Rated for use with heating, air conditioning, and refrigeration equipment applications.
• Industry Standards: Manufactured for use in accordance with applicable molded case circuit breaker standards.
• Electrical System Compatibility: Designed for compatibility within properly rated electrical distribution systems.
• Professional Installation: Intended for installation and servicing by qualified electrical professionals following applicable electrical codes and safety practices.
  

Where It Works Best

• The TJJ436125WL circuit breaker is commonly used in commercial facilities, industrial plants, HVAC systems, distribution panels, and legacy electrical systems requiring a compatible 125A three-pole molded case breaker. Its lug-lug configuration and older style black face design make it especially suitable for maintaining or replacing existing equipment where matching form and fit are important for continued operation and system consistency.