THKMA826300WL - 300Amp Circuit Breaker

THKMA826300WL - 300 Amp Circuit Breaker

The THKMA826300WL is a 300-amp, 2-pole THKM8 molded case circuit breaker designed for your commercial and industrial electrical distribution systems that require dependable overcurrent and short-circuit protection. Featuring a thermal magnetic trip unit with internal common trip functionality, this breaker helps you to protect electrical equipment and conductors from overloads and fault conditions while supporting consistent system operation. Its cable-in/cable-out (lug-lug) configuration includes both line-side and load-side lugs, simplifying installation and replacement in compatible switchgear, panelboards, and power distribution equipment.

Built for demanding applications, the THKMA826300WL incorporates an interchangeable thermal magnetic trip unit, allowing maintenance personnel to service or configure equipment as required. The breaker is also HACR rated, making it suitable for heating, air conditioning, and refrigeration applications where equipment protection is essential. Designed with durability in mind, this molded case circuit breaker delivers the form, fit, and function required for maintaining existing electrical systems and infrastructure.

Key Features and Benefits

• 300 Amp Continuous Current Rating: 300 Amp continuous current rating.
• 2-Pole Configuration: 2-pole configuration for compatible power distribution applications.
• THKM8 Molded Case Circuit Breaker Design: THKM8 molded case circuit breaker design.
• Thermal Magnetic Trip Unit: The thermal magnetic trip unit provides protection against overloads and short circuits.
• Internal Common Trip Mechanism: Internal common trip mechanism for coordinated pole operation.
• Interchangeable Trip Unit Design: Interchangeable trip unit design supports maintenance and serviceability.
• Cable-In/Cable-Out (Lug-Lug) Construction: Cable-in/cable-out (lug-lug) construction.
• Included Connections: Includes both line-side and load-side lugs.
• HACR Rated: HACR rated for heating, air conditioning, and refrigeration applications.
• Built for Demanding Environments: Built to withstand the demands of industrial and commercial environments.
• Form, Fit, and Functional Replacement: Suitable as a form, fit, and functional replacement in compatible installations.

Technical Specifications

• Part Number: THKMA826300WL
  
• Type: THKM8
  
• Amperage Rating: 300A
  
• Number of Poles: 2
  
• Trip Unit: Thermal Magnetic
  
• Trip Style: Internal Common Trip
  
• Configuration: Cable-In/Cable-Out (Lug-Lug)
  
• Included Connections: Line-Side and Load-Side Lugs
  
• A.I.C. Rating:
  • 25kA @ 600VAC
  • 35kA @ 480VAC
  • 65kA @ 240VAC
• HACR Rated: Yes
  
• Dimensions:
  • Height: 15.5 in.
  • Width: 8.25 in.
  • Depth: 5.5 in.

Material Compliance and Certifications

• HACR Rating: HACR (Heating, Air Conditioning, and Refrigeration) Rated.
• Electrical System Requirements: Designed for use in accordance with applicable electrical system requirements and equipment specifications.
• Commercial and Industrial Applications: Manufactured for commercial and industrial power distribution applications.
• Compatibility and Code Compliance: Users should verify compatibility and code compliance requirements for their specific installation.

Where It Works Best

• The THKMA826300WL is well-suited for industrial facilities, manufacturing plants, commercial buildings, utility distribution systems, HVAC equipment installations, motor control applications, and large electrical distribution assemblies requiring a 300A, 2-pole molded case circuit breaker. Its lug-lug configuration and interchangeable thermal magnetic trip unit make it a practical choice for maintaining and servicing existing electrical systems where matching equipment ratings and physical configuration are critical.