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Our Brands

Gridworks is proud to build on an existing and close association with these world-leading brands. The long-term partnerships and extensive product knowledge gained by CSL and HV Power through numerous projects is now a shared heritage that will continue to benefit Gridworks customers.

A. Eberle GmbH & Co. designs and manufactures an innovative range of products including market-leading voltage regulators to control transformer onload tap changers, and portable and fixed power quality analysers.

In New Zealand, Gridworks offers an adaption of their popular voltage regulator but customised for the regulation of Petersen-coils, which are used in the RE+DS Compensated Power System. We also offer A.Eberle’s range of  earth fault detection products for medium and high voltage networks using resonant earthing.

To read more about A. Eberle visit their website:

Following agreement with Horstmann’s Australasian master distributor, MV Technologies, Horstmann products are now available through Gridworks.

Founded in 1946 and today recognised as a leading manufacturer in medium voltage technology for:

  • Short-circuit and earth fault indicators
  • Voltage testers and voltage detecting systems
  • Earthing devices and accessories.

Horstmann products meet highest quality requirements and are developed and manufactured in the company’s own production facilities in Germany. In order to respond to customer demands, Horstmann operates a very high vertical depth of production (e. g. own SMD assembly system) as well as its own research and development department with state-of-the-art testing and measuring equipment.

Besides electronics manufacturing, Horstmann also operate a mechanical production facility for safety material. The company has been certified according to DIN EN ISO 9001 since 1996.

To read more about Horstmann visit their website:

Siemens is one of the world’s leading suppliers of protection equipment for power systems.

In New Zealand, the 3AD3 Vacuum recloser, Compact Module Recloser and Fusesaver products are supported by Gridworks 

To read more about Siemens visit their website:

In 2020 Siemens created an independent company, Siemens Energy, with the goal of sustainability in energy. Siemens Energy now has a global team of more than 91,000 dedicated employees. Their focus is on sustainability in our decarbonization journey, innovation centred on future technologies, and transformation through future-focused offerings, portfolio, and mindset. Together as one team across 90 countries, they are committed to making sustainable, reliable, and affordable energy possible; shaping the energy of tomorrow.

Through Gridworks, Siemens Energy offers the New Zealand market the Surge Arrester, and JFR/SFR line regulator portfolios.

To read more about Siemens Energy visit their website:

EGE, headquartered in the Czech Republic, is a company specialising in the manufacture of equipment for the power engineering industry. EGE has over 60 years’ experience in the manufacture of Petersen coils and are a market leader in Europe. In addition, they also have extensive experience in the manufacture of earthing resistors and earthing transformers.

All their production facilities are ISO 9001 and ISO 14001 accredited. Customers of EGE include ABB, AREVA, ENEL, E-ON, Siemens and Voith.

To read more about EGE visit their website:

Nexans has been operating for over 55 years  is a leading supplier to power utilities, OEM’s, contractors, and approved service providers.

The company provides a complete range of power accessories for energy distribution networks: pre-moulded EPDM rubber separable connectors (elbows) and silicone terminations for cables, compression and shear off lugs and connectors, epoxy bushings for transformers and switchgear, a wide range of cold and heat shrinkable terminations and joints, underground junction cabinets and cable preparation tooling.

Value added services include local design and assembly of customized pre-assembled cable leads. Nexans local test laboratory provides the capability for HI Pot (AC Withstand) to 100kV and Partial Discharge (PD) testing.

To read more about Nexans visit their website:


Sicame was founded in 1955 in France, it now has 50 companies around the world, producing over 50,000 different products. Sicame’s principal activities in Australasia involve the design, manufacture, and supply of specialist electrical and mechanical hardware for use on overhead and underground electricity distribution systems. These activities are supported by the latest computer design and manufacturing and testing programs available.

The Sicame product offering covers a broad range of line and cable fittings and a full range of electrical safety equipment and personal protection. See our product section for more details.

To read more about Sicame visit their website:

Founded in 1919 in France, CATU Electrical Safety Equipment protects Linesmen, Cable Jointers and High Voltage Electrical Engineers during switching and maintenance operations on low and high voltage cable systems, including 3.3kV, 6.6kV, 11kV, 33kV and EHV.

CATU are committed to electrical safety and provide a full range of low and high voltage (LV-HV) equipment and PPE. These products comply with IEC standards for those working on underground cables, switchgear, transformers, and overhead lines.

To read more about CATU visit their website:

When it comes to making safe, dependable hot line tools and equipment, Hastings have satisfied tough customers around the world. As originators of the Tel-0-Pole telescoping hot stick and many other patented products, Hastings are proud to be the industry innovator for hot line tools and equipment.

Hastings started business in the USA, and today are a worldwide supplier with products in use in more than 50 different countries. At home and abroad, they remain focused on delivering tools that line crews can really trust.

Over the last 40 years their reputation for quality, dependability and long-lasting product life has been field-tested around the world.

To read more about Hastings visit their website:

KOZ Products specialises in the design and manufacture of innovative cable clamps and cable blocks. These are in use in more than 40 countries and were designed specifically to provide the best way of fitting low, medium and high voltage cables. They are also suitable for mounting tubes and (hydraulic) pipes.

The products are manufactured using Black polyamide and fiberglass-reinforced material. This results in a halogen-free product that is flame resistant, resistant to radioactive rays, UV rays, salt water, ozone, oils, fuels and alkalis.

The feature list presented by this company’s cable clamps and cable blocks includes suitability for fastening all types of single and multi-conductor cables and ability to withstand high short-circuit currents.

KOZ cable clamps and cable blocks can also be supplied with black neoprene inlays in different sizes and thicknesses. The neoprene inlays are self-extinguishing and resistant to acid, ozone, weather and the most aliphatic oils.

To read more about KOZ Products visit their website: