TKMA836450WL **Older Style** - 450Amp Circuit Breaker

TKMA836450WL **Older Style** - 450 Amp Circuit Breaker

In many industrial facilities, keeping your existing equipment running smoothly often comes down to using the right replacement components. The TKMA836450WL molded case circuit breaker is designed for that exact purpose. With its older style black face and TKM8 configuration, this 450 amp breaker fits well into existing electrical systems where compatibility and dependable protection are important.

This 3-pole breaker uses a thermal magnetic trip unit with internal common trip protection to help guard electrical equipment against overloads and short circuits. The lug-lug design allows for cable-in/cable-out connections, and both line and load-side lugs are included. Whether it’s installed in switchgear, panelboards, or large commercial distribution equipment, the TKMA836450WL is built for demanding environments where electrical systems operate every day under heavy loads.

Facility maintenance teams often rely on breakers like this in manufacturing plants, HVAC systems, and industrial power distribution setups because they’re designed for long service life and consistent operation. Its HACR rating also makes it suitable for heating, air conditioning, and refrigeration applications where reliable circuit protection is required.

Key Features and Benefits

• 450 amp molded case circuit breaker
• 3-pole configuration
• Older style black face design
• Thermal magnetic trip unit
• Internal common trip protection
• Interchangeable trip unit design
• Cable-in/cable-out lug-lug connection
• Includes line and load-side lugs
• HACR rated
• Designed for commercial and industrial electrical systems

Technical Specifications

• Part Number: TKMA836450WL
  
• Type: TKM8
  
• Poles: 3
  
• Amperage Rating: 450A
  
• Trip Unit: Thermal Magnetic
  
• Trip Style: Internal Common Trip
  
• Connection Type: Lug-Lug
  
• A.I.C. Rating @ 600VAC: 22k
  
• A.I.C. Rating @ 480VAC: 30k
  
• A.I.C. Rating @ 240VAC: 42k
  
• HACR Rated: Yes
  
• Dimensions:
  • Height: 15.5 in.
  • Width: 8.25 in.
  • Depth: 5.5 in.
• Included: Line and Load-Side Lugs
  

Material Compliance and Certifications

• HACR Rated: The TKMA836450WL is HACR rated for HVAC and refrigeration system applications.
• Thermal Magnetic Protection: Its thermal magnetic protection system is intended for use in commercial and industrial electrical equipment installed according to applicable electrical codes and system requirements.
  

Where It Works Best

• Industrial switchgear
• Commercial power distribution systems
• Motor control centers
• Manufacturing facilities
• HVAC and refrigeration equipment
• Large panelboards
• Processing equipment
• Existing TKM8 electrical systems requiring compatible replacement breakers
• For facilities maintaining legacy electrical infrastructure, this breaker provides a form, fit, and functional solution designed to work within existing system layouts and equipment configurations.