MHL364001021 - 400 Amp Circuit Breaker

MHL364001021 - 400 Amp Circuit Breaker

When you're matching a 400 amp circuit breaker to existing electrical equipment, small details can determine whether the part is truly suitable. The MHL364001021 is a 400 amp, 3-pole MHL thermal magnetic molded case circuit breaker supplied with both line and load lugs. When the MHL type, amperage, pole count, interrupting ratings, dimensions, and lug configuration all match the application requirements, the MHL364001021 can be evaluated as a form, fit, and functional replacement candidate for compatible legacy electrical equipment. Its solid molded-case construction is built to last when correctly selected, installed, and maintained for its intended electrical application.

Key Features and Benefits

• 400 Amp Rating: Provides the stated 400A capacity needed when matching equipment that specifically calls for this amperage.
• Three-Pole Design: The 3-pole configuration is essential for three-pole applications.
• Thermal Magnetic Design: Uses the specified thermal magnetic circuit breaker configuration.
• Line and Load Lugs Included: Includes both line-side and load-side lugs, removing any ambiguity about the supplied lug configuration.
• 60Hz and 40°C Ratings: Two additional specifications to check when matching the breaker to existing equipment.

Technical Specifications

• Part Number: MHL364001021
  
• Type: MHL
  
• Product Type: Thermal Magnetic Molded Case Circuit Breaker
  
• Amperes: 400A
  
• Poles: 3
  
• A.I.C. Rating & Volts: 25k @ 600VAC; 65k @ 480VAC; 65k @ 240VAC
  
• Frequency: 60Hz
  
• Temperature Rating: 40°C
  
• Lug Configuration: Includes Line and Load Lugs
  
• Dimensions: 9.00"W x 14.00"L x 4.53"D
  
• Height: 14.00 in.
  
• Width: 9.0 in.
  
• Depth: 4.53 in.
  
• Approximate Shipping Weight: 45.00 lbs.
  

Material Compliance and Certifications

No specific UL, CSA, IEC, HACR, RoHS, REACH, or other certification or material-compliance information was supplied for part number MHL364001021. Do not assume these certifications based on the MHL type, product category, or specifications of similar breakers.

Where It Works Best

The MHL364001021 400 amp circuit breaker suits compatible existing or legacy electrical equipment where the required specifications match its MHL type, 400A rating, three-pole configuration, thermal-magnetic design, 60Hz frequency, 40°C rating, and line-and-load lug configuration.

For replacement work, pay particular attention to the voltage-specific interrupting ratings. The MHL364001021 is specified at 25k @ 600VAC, 65k @ 480VAC, and 65k @ 240VAC. Its physical dimensions—9.00" W x 14.00 "L x 4.53 "D—should also be checked against the existing breaker and equipment rather than relying on the catalog number alone.