TKMA826300 **Older Style** - 300Amp Circuit Breaker

TKMA826300 **Older Style** - 300 Amp Circuit Breaker

Designed for your demanding industrial electrical distribution systems, the TKMA826300 Older Style Black Face molded case circuit breaker provides dependable overcurrent protection for equipment, feeders, and power distribution applications that require a 300-amp, 2-pole configuration. Built with a thermal magnetic trip unit and an internal common trip mechanism, this breaker is engineered for consistent interruption performance in commercial and industrial environments where reliable circuit protection is essential. Its bolt-on mounting design supports secure installation, while the included load-side lugs help simplify setup in compatible systems.

This TKM8 circuit breaker features interchangeable trip units, making it well-suited for facilities maintaining existing electrical infrastructure that relies on compatible legacy components. The older-style black-face configuration helps support proper form, fit, and function replacement requirements in established systems. Designed for long-term service in demanding operating conditions, the TKMA826300 is HACR-rated and built to last in HVAC, manufacturing, distribution, and heavy-duty power applications where high interrupting capacity and dependable protection are essential.

Key Features and Benefits

• 300 amp molded case circuit breaker: Designed for industrial and commercial power distribution applications.
• 2-pole configuration: Designed for compatible three-phase and single-phase applications.
• Older style black face design: Supports form, fit, and functional replacement requirements in existing systems.
• Thermal magnetic trip unit: Helps protect against overloads and short circuits.
• Interchangeable trip unit configuration: Supports maintenance flexibility.
• Internal common trip mechanism: Enhances coordinated circuit interruption.
• Bolt-on mounting design: Provides a stable and secure installation.
• Includes load-side lugs: Adds installation convenience.
• HACR rated: Approved for heating, air conditioning, and refrigeration equipment applications.
• Built for demanding environments: Designed for long-term durability in industrial electrical systems.
  

Technical Specifications

• Part Number: TKMA826300
  
• Type: TKM8
  
• Poles: 2
  
• Amperage: 300A
  
• A.I.C. Rating & Voltage:
  • 22k @ 600VAC
  • 30k @ 480VAC
  • 42k @ 240VAC
• Mounting Style: Bolt-On
  
• Trip Unit: Thermal Magnetic, Interchangeable
  
• Trip Mechanism: Internal Common Trip
  
• Included Accessories: Load-Side Lugs
  
• HACR Rated: Yes
  
• Dimensions:
  • Height: 15.5 in.
  • Width: 8.25 in.
  • Depth: 5.5 in.

Material Compliance and Certifications

• HACR Rated: Approved for heating, air conditioning, and refrigeration applications.
• Industrial and Commercial Use: Manufactured for use in industrial and commercial electrical distribution systems.
• Operational Standards: Designed to meet applicable molded case circuit breaker operational standards for compatible installations.
• Equipment Compatibility: Suitable for use in properly rated electrical equipment and panel systems.
  

Where It Works Best

• The TKMA826300 circuit breaker is commonly used in industrial facilities, commercial buildings, manufacturing plants, HVAC systems, distribution equipment, and large electrical service applications requiring dependable overcurrent protection. It is especially suitable for maintenance teams and contractors seeking a compatible replacement breaker for existing TKM8 installations that require the older-style black-face configuration.