TKMA826500 **Older Style** - 500Amp Circuit Breaker

TKMA826500 **Older Style** - 500 Amp Circuit Breaker

The TKMA826500 is a 500 amp, 2-pole molded case circuit breaker commonly used in older commercial and industrial electrical systems that still rely on TKM8-style equipment. If you’re replacing a breaker in existing switchgear or a panelboard, matching the original style and mounting setup can save time and help avoid unnecessary modifications. That’s where this older style black face configuration comes in.

This breaker uses a thermal magnetic trip unit to help protect electrical systems from overloads and short circuits during normal operation. The bolt-on design provides a secure connection in compatible equipment, and the internal common trip mechanism disconnects both poles together when needed. Load-side lugs are included, which can make installation easier for technicians working in the field.

You’ll often find breakers like the TKMA826500 in manufacturing plants, commercial buildings, mechanical rooms, and other heavy-duty power distribution environments where long-standing electrical systems are still in service. These breakers were built for everyday use in demanding applications and continue to be a dependable fit for maintaining existing equipment.

Key Features and Benefits

• 500 amp, 2-pole molded case circuit breaker
• Older style black face configuration
• Thermal magnetic trip unit
• Internal common trip protection
• Bolt-on mounting style
• Includes load-side lugs
• HACR rated
• Interchangeable trip unit design
• Used in commercial and industrial power distribution systems

Technical Specifications

• Part Number: TKMA826500
  
• Type: TKM8
  
• Poles: 2
  
• Amperage: 500A
  
• A.I.C. Ratings:
  • 22kA @ 600VAC
  • 30kA @ 480VAC
  • 42kA @ 240VAC
• Dimensions:
  • Height: 15.5 in.
  • Width: 8.25 in.
  • Depth: 5.5 in.
• Mounting: Bolt-On
  
• Trip Unit: Thermal Magnetic
  
• Trip Type: Internal Common Trip
  
• Included: Load-Side Lugs
  

Material Compliance and Certifications

• HACR Rated
• Designed for commercial and industrial electrical distribution applications
• Molded case circuit breaker construction for overcurrent protection systems

Where It Works Best

• The TKMA826500 works well in existing TKM8 electrical systems found in industrial facilities, commercial properties, and large-scale power distribution equipment. It’s especially useful where matching breaker style, dimensions, and mounting configuration matters for maintaining older installations.