THKMA836450 - 450Amp Circuit Breaker

THKMA836450 - 450Amp Circuit Breaker

The THKMA836450 is a 450-amp, three-pole, industrial molded-case circuit breaker from the THKM8 series, designed for your electrical systems that require a specific combination of current capacity, interrupting ratings, and bolt-on mounting. Built for demanding commercial and industrial electrical applications, this breaker features an interchangeable thermal-magnetic trip unit with an internal common-trip mechanism to provide overload and short-circuit protection. Its interrupting ratings include 25kA at 600VAC, 35kA at 480VAC, and 65kA at 240VAC, so voltage and available fault current are key considerations when matching it to an existing installation. The THKMA836450 also carries an HACR rating and includes load-side lugs for electrical connections.

Key Features and Benefits

• 450-Amp Current Rating:
• Three-Pole Circuit Breaker Configuration:
• Interchangeable Thermal-Magnetic Trip Unit:
• Internal Common-Trip Mechanism:
• Multiple AC Interrupting Ratings:
• Bolt-On Mounting Configuration:
• Includes Load-Side Lugs:
• THKM8 Series Construction:
• Built for Long-Term Industrial Use:

Technical Specifications

• Catalog Number: THKMA836450
  
• Product Type: Industrial Molded-Case Circuit Breaker
  
• Series / Type: THKM8
  
• Rated Current: 450 amperes (450A)
  
• Number of Poles: 3
  
• Mounting Type: Bolt-On
  
• Trip Unit Type: Interchangeable Thermal-Magnetic
  
• Trip Mechanism: Internal Common Trip
  
• Overload Protection: Thermal
  
• Short-Circuit Protection: Magnetic
  
• Interrupting Rating at 600VAC: 25kA (25,000 amperes)
  
• Interrupting Rating at 480VAC: 35kA (35,000 amperes)
  
• Interrupting Rating at 240VAC: 65kA (65,000 amperes)
  
• HACR Rating: Yes
  
• Load-Side Lugs: Included
  
• Width: 8.25 inches
  
• Height / Length: 15.50 inches
  
• Depth: 5.50 inches
  
• Overall Dimensions: 8.25" W × 15.50" L × 5.50" D
  
• Approximate Shipping Weight: 55.00 lbs.
  

Material Compliance and Certifications

The available specifications for the THKMA836450 identify the following product ratings and characteristics:

• HACR Rating: Identified as HACR-rated for applications involving heating, air conditioning, and refrigeration equipment, subject to applicable installation requirements.
• Additional Certifications: The available product specifications do not include specific UL listing details, CSA certification, or other material compliance declarations.

Where It Works Best

• Existing Industrial Electrical Systems:
• Commercial Electrical Distribution:
• Industrial Maintenance and Repairs:
• Legacy Electrical Equipment:
• Matching Circuit Breaker Replacements:
• Three-Phase Electrical Applications:
• HVAC and Refrigeration Equipment:
• Facility Maintenance and Electrical Restoration:
• Industrial Power Distribution Assemblies: