HMCP400D5 - 400Amp Motor Circuit Protector

HMCP400D5 - 400Amp Motor Circuit Protector

When an existing application calls for an Eaton HMCP400D5, getting the specifications right matters. This 400A, three-pole motor circuit protector is part of Eaton’s Series C line and uses a J-K frame with a 500–1000A magnetic trip range. It is rated for a maximum of 600V AC and 250V DC and comes with line and load terminals. Simply put, this is a practical choice for an existing system that specifically requires the HMCP400D5's combination of frame size, amperage, trip range, voltage rating, and three-pole configuration. It's built to last and, just as importantly, provides the defined form, fit, and function needed when you're trying to keep compatible equipment in service.

Key Features and Benefits

• 400A rating – Designed for applications requiring a 400-amp motor circuit protector.
• 500–1000A magnetic trip range – Provides a clearly specified range for matching the requirements of an existing installation.
• Three-pole design – Fits applications calling for this specific pole configuration.
• J-K frame – Makes frame compatibility easier to confirm during replacement and maintenance work.
• Series C construction – Intended for compatible Eaton Series C applications.
• 600V AC and 250V DC maximum rating – Clearly defined voltage limits help with proper application matching.
• Line and load terminals – Uses the terminal arrangement specified for the HMCP400D5.
  

Technical Specifications

• Manufacturer: Eaton
  
• Catalog Number: HMCP400D5
  
• UPC: 786679342305
  
• Type: Motor circuit protector
  
• Product Type: Molded case circuit breaker accessory
  
• Series: Series C
  
• Amperage Rating: 400 A
  
• Frame Size: J-K
  
• Magnetic Trip Range: 500–1000 A
  
• Maximum Voltage: 600 V AC / 250 V DC
  
• Number of Poles: Three-pole
  
• Terminals: Line and load
  
• Height: 10.13 in
  
• Width: 5.5 in
  
• Length/Depth: 4.1 in
  
• Weight: 11.5 lb
  
• Certifications: UL Listed; CSA Certified
  

Material Compliance and Certifications

The HMCP400D5 is UL Listed and CSA Certified. These certifications can be important when you're matching a replacement device to existing equipment specifications or project requirements.

No additional material-compliance designation was included in the supplied manufacturer information, so it isn't appropriate to assume one. Always confirm the equipment and application requirements before installation.

Where It Works Best

The Eaton HMCP400D5 makes the most sense for existing motor control applications that require a 400A, three-pole Series C motor circuit protector with a J-K frame and a 500–1000A magnetic trip range. It's especially useful for maintenance and replacement work where changing the original electrical or physical configuration isn't the goal.

Before putting one into service, check more than the catalog number. Compare the frame size, amperage, magnetic trip range, voltage rating, pole count, terminal arrangement, and physical dimensions against the existing device and equipment documentation. When those details line up, you'll have much greater confidence that you're selecting the right component for the job.