A modular, highly customizable circuit breaker kiosk designed to protect underground networks.


Distributed, Renewable and Private MV Connections Solved

Solve Underground Cable Protection and Control for Medium Voltage Applications up to 16 kA and 38 kV.


Standard Applications

  • Distributed Generation
  • Renewable Connection
  • Underground Cable Network Protection
  • Private MV Infrastructure Connection
  • Rail Network Supply

GMK Variants

Versatility to address any Underground Network Protection Challenge.



Compact GMK-1000 series, to 27 kV with a 1.1m x 1.1m footprint.



Highly Customisable GMK-2000 series, rated to 38kV with options of Earth Switches, Dual CB arrangement, Revenue Metering, Power Quality Metering or more.

Powered by the NOJA Power OSM Recloser System with RC control.

The GMK provides a staggering array of protection and SCADA control functionality as standard.

Download Diagram

Fully Tested to the most rigorous industry standards.

The GMK allows for a fully specified and encapsulated switchgear arrangement to be built and tested in the clean room environment of the state of the art NOJA Power Manufacturing Campus in Brisbane Australia.

Save thousands on your project by minimizing commissioning and on-site electrical works with the fully integrated NOJA Power GMK.