TJJ436175WL **Older Style** - 175Amp Circuit Breaker

TJJ436175WL  **Older Style** - 175 Amp Circuit Breaker

When you’re working with existing commercial or industrial electrical equipment, finding the right breaker is about more than matching amperage. Fit, configuration, and compatibility matter just as much. The TJJ436175WL molded case circuit breaker is built for applications that require a dependable 175-amp, 3-pole breaker with the familiar older-style black-face design often found in legacy power distribution systems.

Part of the well-known Q-Line family, this breaker uses a thermal magnetic trip unit to help protect electrical systems from overloads and short circuits while maintaining reliable operation in demanding environments. Its cable-in/cable-out lug-lug configuration allows for straightforward installation, and the included line and load-side lugs help reduce the hassle of sourcing additional components separately.

With interrupting capacities rated up to 22 kA at 600 VAC, the TJJ436175WL is commonly used in commercial buildings, industrial facilities, HVAC equipment, panelboards, switchboards, and other three-phase power distribution applications. The internal common trip design helps ensure all poles disconnect together during fault conditions, adding another layer of protection where coordinated circuit interruption is important.

Built to last and compatible with existing electrical systems, this breaker remains a practical solution for maintaining and servicing established installations without unnecessary modifications.

Key Features and Benefits

• 175 Amp molded case circuit breaker: For commercial and industrial applications.
• 3-pole configuration: For three-phase electrical systems.
• Older style black face design: For compatibility with legacy equipment.
• Q-Line breaker construction: Built for dependable operation.
• Cable-in/cable-out (lug-lug) connection setup: Allows for straightforward installation.
• Thermal magnetic trip unit: Helps protect against overloads and short circuits.
• Internal common trip mechanism: Disconnects all poles simultaneously during fault conditions.
• HACR rated: Suitable for HVAC and refrigeration applications.
• Includes line-side and load-side lugs: Helps reduce additional component sourcing.
• Compact footprint: Allows easier integration into existing electrical setups.
• Built for long-term use: Suitable for demanding environments.
  

Technical Specifications

• Part Number: TJJ436175WL
  
• Type: TJJ
  
• Product Style: Older Style Black Face
  
• Product Category: Molded Case Circuit Breaker
  
• Poles: 3
  
• Amperage: 175A
  
• Trip Unit: Non-Interchangeable Thermal Magnetic
  
• Trip Type: Internal Common Trip
  
• Connection Style: Cable-in/Cable-out (Lug-Lug)
  
• Included Accessories: Line and Load-Side Lugs
  
• A.I.C. Rating: 22kA @ 600VAC
  
• A.I.C. Rating: 30kA @ 480VAC
  
• A.I.C. Rating: 42kA @ 240VAC
  
• HACR Rated: Yes
  
• Dimensions:
  • Height: 10.13 in.
  • Width: 8.25 in.
  • Depth: 3.81 in.

Material Compliance and Certifications

• HACR Rated: For heating, air conditioning, and refrigeration applications.
• Thermal Magnetic Protection: Designed for overload and short-circuit conditions.
• Commercial and Industrial Use: Designed for use in commercial and industrial electrical distribution systems.
• Industry Standards: Manufactured to meet applicable molded case circuit breaker industry standards.
  

Where It Works Best

• The TJJ436175WL is commonly installed in commercial electrical distribution systems, industrial control panels, manufacturing facilities, HVAC equipment and mechanical systems, switchboards and panelboards, and other three-phase power applications. It is also commonly used in legacy electrical systems requiring older-style black face breakers and maintenance or replacement projects where form and fit compatibility are important. For facilities maintaining existing infrastructure, this breaker offers a straightforward replacement option that supports proper system continuity without requiring major equipment changes.