8kV, 400A Cable & Equipment Couplers

These cable couplers are rugged and specially designed for use in mines and tunneling.

Medium voltage couplers can be manufactured to be compatible with all other couplers of North American design.

These couplers are fully sealed when installed and can be used in wet and dusty environments as they are designed to be IP57 compliant.

Typical Applications Include:

  • Connections of Shovel/Drills in mine operations

  • Tunnel Boring Machines

  • Container Port Cranes

  • Lumber Portal Cranes

Features and Benefits

  • Lightweight cast Aluminum components that provide strength and coupler durability.
  • MCS custom manufactured special strain relief entrance fitting:

            Special self-centering entrance fitting ensures balanced cable strain relief and water sealing

  • Individually machined phase insulators made of high dielectric polymer:

            Made of break resistant material and individually removable.

  • Individual Phase contacts and insulators can be shielded to ground
  • Machined high strength stainless steel and bronze corrosion resistant hardware
  • Unique set screw(mechanical), compression style or solder style connector system eliminates conductor pull-out under normal operating conditions.
  • Silver plated contacts (optional)

Coupler Options

  • Inter-phase ground shielding: Ensures that all faults would be phase to ground, not phase to phase.
  • Powder or Epoxy coated body components
  • Fiber-Optics capable
  • Multiple Interconnection options
  • Longer main body to accommodate larger cable and conductors.
  • Adapter plates for a variety of cable strain relief options.

Coupler Accessories

  • Skids
  • Junction Boxes

 Electrical Rating

  • Voltage: 8000 Volts AC

  • Current: 400 Amps


  • Tested to IEEE 386-1995:

            Our 8kV, 400A insulator is a double wall design to ensure compliance to IEEE 386.

  • For Switchgear Mounted Couplers - MCS couplers meet requirements of CSA C22.2 No. 31-04
  • Manufactured to meet IP67H design standards.

   5kV-8kV Coupler Product Data Sheet 2017.pdf

             How to Order Couplers