operating drive

The primary function of a motor operating mechanism is to provide reliable remote operation of disconnectors by
means of a reciprocating (up-down motion) or torsional (rotating motion) operation. Hughes produces a wide range of different motor operation mechanisms for disconnectors and earth switches. The product range covers everything from small low voltage applications in tram to medium voltage applications in rail and electrical distribution to heavy motor mechanisms in high voltage disconnector application.

Hughes Power System motor operating drive
  • Unique motor mechanism with low start current and high start torque
  • Secure self-locking motor mechanism
  • Easy installation and compatible with most air break switches
  • Optional automatic sectionalizing logic
  • Optional remote blocking unit for locking the output shaft for extra safety
  • High quality stainless steel for cabinet and parts


EOA500 series of motor operating drives is intended to be used in air break switch/disconnector applications in electrical distribution substations.

The EOA 500’ is characterized by its unique design with low motor start current and high electro mechanical efficiency.

The device is designed for manual and remote control of disconnectors.

The motor drive is simple to install and has all the necessary electronics and control panel built in.

Hughes Power System motor operator for substations


  • Unique motor mechanism with low starting current and high starting torque
  • Secure self-locking motor mechanism
  • Optional lock solenoid on motor shaft for extra security
  • All 110VDC or 220VAC operation
  • Easy installation and compatible with most air break switches 
  • Made of stainless steel
Hughes Power System motor operator for substations

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Motor drives for disconnectors
  • Motor drives for disconnectors
  • Disconnectors for railways
  • Reclosers
  • Recloser controls
  • Time-voltage sectionalizers
  • Сontrol cabinets for vacuum breaker modules
  • Kiosk reclosers
  • Indoor vacuum circuit breaker
  • Outdoor vacuum circuit breaker
  • High voltage circuit breaker