THKMA836400 - 400Amp Circuit Breaker

THKMA836400 - 400Amp Circuit Breaker

The THKMA836400 Circuit Breaker is a 400-amp, three-pole industrial molded-case circuit breaker for your compatible commercial and industrial electrical distribution systems. With a THKM8 breaker configuration, bolt-on mounting, an interchangeable thermal-magnetic trip unit, and internal common-trip operation, this circuit breaker provides defined electrical and mechanical characteristics for installations requiring a matching 400A protective device. The THKMA836400 is also HACR rated and includes load-side lugs, supporting its specified terminal arrangement in compatible electrical equipment.

Key Features and Benefits

• 400-Amp Current Rating
• Three-Pole Circuit Breaker Configuration
• THKM8 Molded Case Construction
• Bolt-On Mounting Configuration
• Included Load-Side Lugs
• Interchangeable Thermal-Magnetic Trip Unit
• Internal Common-Trip Operation
• Voltage-Specific Interrupting Ratings
• HACR-Rated Classification
• Industrial Molded Case Design
• Form, Fit, and Functional Replacement Considerations

Technical Specifications

• Catalog Number: THKMA836400
  
• Product Type: Industrial Molded Case Circuit Breaker
  
• Product Category: Thermal-Magnetic Circuit Breaker
  
• Breaker Type: THKM8
  
• Rated Current: 400 Amperes (400A)
  
• Number of Poles: 3
  
• Mounting Configuration: Bolt-On
  
• Trip Technology: Thermal-Magnetic
  
• Trip Unit Design: Interchangeable
  
• Trip Operation: Internal Common Trip
  
• Load-Side Lugs: Included
  
• HACR Rated: Yes
  
• Interrupting Capacity at 240VAC: 65kAIC
  
• Interrupting Capacity at 480VAC: 35kAIC
  
• Interrupting Capacity at 600VAC: 25kAIC
  
• 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.
  
• Housing Construction: Molded Case
  
• Trip Unit Interchangeability: Yes, Subject to Manufacturer-Approved Compatibility
  

Material Compliance and Certifications

The THKMA836400 Industrial Molded Case Circuit Breaker is a 400A, three-pole thermal-magnetic circuit breaker with an interchangeable trip unit, internal common-trip operation, bolt-on mounting, HACR-rated classification, and included load-side lugs.

Before placing the breaker into service, qualified electrical personnel should confirm all required safety listings, terminal specifications, electrical ratings, trip-unit compatibility, mounting requirements, and equipment compatibility.

Where It Works Best

• Existing Commercial Electrical Systems
• Industrial Power Distribution Equipment
• Three-Pole Electrical Applications
• Legacy Electrical Distribution Systems
• Matching THKM8 Circuit Breaker Replacements
• Bolt-On Circuit Breaker Installations
• Load-Side Lug Applications
• Interchangeable Trip-Unit Applications
• Industrial Machinery and Equipment Protection
• Facility Maintenance and Electrical Repairs
• HACR-Rated Equipment Applications
• Electrical Equipment Restoration
• Form, Fit, and Functional Replacement Applications