HMCP400G5 - 400Amp Motor Circuit Protector

HMCP400G5 - 400Amp Motor Circuit Protector

The Eaton HMCP400G5 is a 400A, three-pole motor circuit protector from Eaton’s Series C line, designed for applications that require a J-K frame and a 750–1500A magnetic trip range. With a maximum rating of 600V AC or 250V DC, it provides the electrical characteristics required for compatible motor control equipment. It comes with line and load terminals and has a clearly defined footprint—10.13 inches high, 5.5 inches wide, and 4.1 inches deep—which is especially helpful when you’re trying to match an existing component rather than redesign an installation.

Key Features and Benefits

• 400A rating for equipment designed around this specific amperage requirement.
• 750–1500A magnetic trip range provides an important matching point when replacing an existing motor circuit protector.
• Three-pole design accommodates compatible three-phase motor control applications.
• J-K frame configuration makes it easier to confirm physical compatibility with existing Series C equipment.
• Rated for a maximum of 600V AC or 250V DC.
• Supplied with line and load terminals.
• Clearly specified dimensions help take some of the guesswork out of replacement and maintenance work.
• Designed to provide the required form, fit, and function when the existing application specifically calls for the HMCP400G5 configuration.
  

Technical Specifications

• Manufacturer: Eaton
  
• Catalog Number: HMCP400G5
  
• UPC: 786679342343
  
• Product Type: Molded case circuit breaker accessory
  
• Type: Motor circuit protector
  
• Series: Series C
  
• Frame Size: J-K
  
• Amperage Rating: 400 A
  
• Magnetic Trip Range: 750–1500 A
  
• Maximum Voltage: 600 V AC / 250 V DC
  
• Number of Poles: Three-pole
  
• Terminals: Line and load
  
• Product Height: 10.13 in
  
• Product Width: 5.5 in
  
• Product Length/Depth: 4.1 in
  
• Product Weight: 11.5 lb
  

Material Compliance and Certifications

The HMCP400G5 is UL Listed and CSA Certified. For other compliance or material-specific requirements, Eaton directs users to contact the manufacturer.

When matching this unit to existing equipment, it’s worth checking the complete set of specifications rather than focusing on a single number. Confirm the 400A rating, J-K frame, 750–1500A magnetic trip range, three-pole arrangement, voltage rating, terminals, and dimensions against the existing component and applicable equipment documentation.

Where It Works Best

The Eaton HMCP400G5 makes the most sense in existing motor control installations that specifically require a 400A Series C, J-K frame, three-pole motor circuit protector with a 750–1500A magnetic trip range. It can be particularly useful in maintenance and replacement situations where keeping the correct electrical ratings and physical configuration is essential.

If you’re replacing an existing unit, start with the catalog number—but don’t stop there. Check the frame size, amperage, trip range, voltage, number of poles, terminals, and dimensions as well. When those specifications meet the equipment's requirements, the HMCP400G5 provides the intended form, fit, and function without making claims beyond what the product is designed to do.