NOJA Power

Ground Mount Kiosk

Innovation in Integration


Solve Medium Voltage Network Connections with a single device.

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

GMK Design Overview

Application Example: Solar Farm Connection

Kanowna Solar Farm in Moree, NSW Australia, was connected to the MV distribution grid with the NOJA Power GMK. This GMK allowed the asset developers to address all connection requirements with a single, factory tested product.


Application Example: Auto Changeover for Critical Supply in Victoria

This installation for Metro Rail in Melbourne, Victoria, Australia has two NOJA Power GMK's serving the rail electrification supply. A fibre-optic connected auto changeover scheme is running between the units, providing an added layer of supply reliability for critical infrastructure.

NOJA Power supplied the GMK Switchgear and Automation system for this project.


Application Example: Mining Switchgear

Deployed in the rich iron mining region of WA's Pilbara region, this GMK installation provides electrical protection and control for one of Australia's largest mining projects.

Electrical engineers used the integrated protection functionality of NOJA Power's RC-10 control in this assembly, providing safe and reliable power for this critical infrastructure project.

Application Example: Waste Gas Generator Connection

Located in Western Sydney Australia, this NOJA Power GMK was used to connect a gas turbine generator powered by recovered methane from landfill. This installation included generation metering, remote control and monitoring.

GMK Variants

Versatility to address any Underground Network Protection Challenge.

GMK 1000

GMK-1000 Series Kiosks

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

GMK 2000

GMK-2000 Series Kiosks

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

GMK-3000 Series Kiosks

Highly Customisable GMK-3000 series with Internal Arc Classification, rated to 38kV with options of Earth Switches, Revenue Metering, Power Quality Metering or more.

GMK-4000 Series Kiosks

Also known as the Auto-Changeover GMK, this design provides two NOJA Power OSM Reclosers within the same Ground Mount Kiosk Enclosure.

This design topology is applied in two primary cases. Firstly, the 4000 series GMK can be used to supply a critical load from two alternative sources. In the event of power quality degradation or failure from the primary source, the GMK can automatically switch supply to the alternate source, and revert upon supply restoration.

Secondly, the 4000 series GMK can be used in renewable energy connection applications providing a method for network controllers to partially shed generation assets. Solar farms connected with the GMK4000 series can be progressively shed during network instability periods, or partially disconnected for maintenance. This offers an advantage over a single point of connection, maximising asset uptime and revenue for generation unit operators.

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


Factory 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.

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