MH36400 - 400 Amp Circuit Breaker

MH36400 - 400 Amp Circuit Breaker

The MH36400 is a 400 amp, 3-pole thermal-magnetic molded-case circuit breaker for compatible I-Line panelboards. When you're replacing a breaker in existing or legacy equipment, a familiar catalog number helps, but the real match comes down to the details. When all required specifications agree, the MH36400 can serve as a form, fit, and functional replacement option for compatible electrical equipment. Its solid molded-case construction is built to last when selected, installed, and maintained correctly.

Key Features and Benefits

• 400 Amp Rating: Rated at 400A for applications requiring this specific current rating.
• 3-Pole Configuration: Provides the three-pole arrangement specified for the MH36400.
• I-Line Panelboard Application: Identified specifically for I-Line panelboards, making this an important compatibility point during replacement selection.
• Thermal Magnetic Configuration: The supplied product specifications identify the MH36400 as a thermal magnetic circuit breaker.
• 60Hz Operation: Frequency is specified at 60Hz.
• 40°C Rating: Carries a stated 40°C temperature rating.

Technical Specifications

• Part Number: MH36400
  
• Type: MH
  
• Product Type: Thermal Magnetic Molded Case Circuit Breaker
  
• Intended Application: I-Line Panelboards
  
• Amperes: 400A
  
• Poles: 3
  
• A.I.C. Rating at 600VAC: 25k
  
• A.I.C. Rating at 480VAC: 65k
  
• A.I.C. Rating at 240VAC: 65k
  
• Frequency: 60Hz
  
• Temperature Rating: 40°C
  
• Dimensions: 9.00"W x 16.00"L x 4.54"D
  
• Height: 16.00 in.
  
• Width: 9.0 in.
  
• Depth: 4.54 in.
  
• Approximate Shipping Weight: 45.00 lbs.
  

Material Compliance and Certifications

The supplied specifications for the MH36400 did not include any specific UL, CSA, IEC, RoHS, REACH, HACR, or other certification or material-compliance information. These details should not be assumed based on the MH type or information associated with similar circuit breakers.

Where It Works Best

The MH36400 400 amp circuit breaker is best evaluated for replacement applications in compatible I-Line panelboards that require an MH-type, 3-pole, 400A thermal-magnetic molded-case circuit breaker. This is especially relevant when maintaining existing or legacy equipment where the goal is to retain the required form, fit, and electrical specifications.

Before using the MH36400 as a replacement, compare the existing application with its 400A rating, three-pole configuration, 60Hz frequency, 40°C rating, physical dimensions, and applicable A.I.C. rating. At 600 VAC, the stated A.I.C. rating is 25 kA; at 480 VAC and 240 VAC, it is 65 kA.