Indoor vacuum
circuit breaker

The VX4 series of kiosk/substation vacuum circuit breaker is intended to be used in transformer substations and switching points. It has a wide range of accessories as truck’s, different types of connection arms and contacts, commissioned with or without integrated current transformers. The VX4 circuit breaker series includes the models for the voltage range 6/12kV and 22/24kV and is built to remain in operation for more than 30 years without major maintenance.

Hughes Power System indoor vacuum circuit breaker
  • Non enclosed switch for extra safety
  • Small foot print
  • Operation On and Off with full load without electric power
  • Solid insulated. No harmful SF6 gas
  • Frame of "Marine grade" premium stainless steel
  • Epoxy bushings with silicon insulation



The mounting bracket is designed to fit in a transformer kiosks switch bay  with a width in the range of 600 -950mm. The mouninting bracket is made of stainless steel and has an universal fitting for transformer kiosk bays.


Hughes vacuum circuit breaker

Multicore interconnection cable for OVX/ACR/VX4 and FTU recloser control. Standard length is 6,5m. Cable is fitted with IP67 specified industrial connectors. Custom cable length is available. 


Hughes vacuum circuit breaker

The interrupter module simulator connects directly to the connector on the protection relay. The unit simulates On and Off in the VX4 switch module and its proximity switches. Inputs for one phase AC secondary current source and voltage source.


Hughes vacuum circuit breaker

Voltage transformer 1-phase connection, 
12 or 24/.110 kV class1, 50 VA.

Mounting bracket is available.


Hughes vacuum circuit breaker

Clip-on current transformer
Winding: 150/1.


Hughes vacuum circuit breaker

Core balance transformer
Winding: 20/1


Hughes vacuum circuit breaker

Hand crank operated truck mount with interlock function.

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