HMCP400Y5 - 400Amp Motor Circuit Protector

HMCP400Y5 - 400Amp Motor Circuit Protector

When you’re replacing a motor circuit protector, getting the details right matters. The Eaton HMCP400Y5 is a 400A, three-pole Series C motor circuit protector with a Frame J-K configuration and an adjustable magnetic trip range of 2250–4500A. It is rated for applications up to 600V AC or 250V DC and comes with line and load terminals. For maintenance teams, electricians, and facilities working with compatible Eaton equipment, those specifications provide the key information needed to determine whether the HMCP400Y5 matches the existing application.

Key Features and Benefits

• 400A rating for compatible motor protection applications
• Three-pole design with a Frame J-K configuration
• Part of Eaton's Series C product family
• 2250–4500A magnetic trip range
• Rated for up to 600V AC and 250V DC
• Line and load terminals are included in the configuration
• Published dimensions make it easier to check physical fit before installation
  

Technical Specifications

• Manufacturer: Eaton
  
• Catalog Number: HMCP400Y5
  
• UPC: 786679108338
  
• Product Type: Molded case circuit breaker accessory
  
• Type: Motor circuit protector
  
• Series: Series C
  
• Amperage Rating: 400 A
  
• Number of Poles: 3
  
• Frame Size: Frame J-K
  
• Magnetic Trip Range: 2250–4500 A
  
• Maximum Voltage: 600 V AC / 250 V DC
  
• Terminals: Line and load
  
• Height: 10.13 in
  
• Width: 5.5 in
  
• Depth: 4.1 in
  
• Weight: 11.5 lb
  

Material Compliance and Certifications

The HMCP400Y5 is UL Listed and CSA Certified. Eaton's published information identifies additional compliance information as “Contact Manufacturer.” If your installation has project-specific environmental, material, or regulatory requirements, those requirements should be checked against the applicable manufacturer documentation.

Certifications are only one part of selecting the correct component. You'll also want to match the protector's electrical ratings and physical configuration to the equipment in which it will be installed.

Where It Works Best

The Eaton HMCP400Y5 is intended for compatible commercial and industrial motor protection applications that require its specific combination of ratings and configuration. It's especially relevant when maintaining an existing installation that calls for a 400A, three-pole, Frame J-K Series C motor circuit protector with a 2250–4500A magnetic trip range.

For a replacement, the safest approach is straightforward: match the specifications. Check HMCP400Y5 against the existing component, then verify the 400A rating, three-pole configuration, frame size, voltage rating, magnetic trip range, terminal arrangement, and dimensions. When those details line up with the equipment requirements, you have a much clearer picture of form, fit, and functional compatibility.