Key Australian companies providing relay protection solutions include Schneider Electric Australia, Sigma Power Services, CSE Uniserve, and MerCs.

Schneider Electric Australia

Schneider Electric offers a wide range of medium- and high-voltage protection relays under the Easergy and PowerLogic brands. Their relays provide overcurrent, arc, distance, and differential protection for transmission lines, motors, transformers, and capacitor banks. Advanced features include IEC 61850 communication, cybersecure platforms, and modular designs suitable for both standard and demanding applications . Schneider's solutions are widely used for grid protection, industrial automation, and energy management.

Sigma Power Services (SPS)

Sigma Power Services specialises in configuring, testing, and integrating microcontroller-based protection and control relays from leading manufacturers such as SEL, ABB, Siemens, MICOM, GE, Schneider, and ZIV. SPS provides end-to-end solutions for power generation, transmission, and distribution systems, ensuring accurate relay configuration, digital communication integration, and compliance with operational standards . Their services help minimise downtime and protect critical infrastructure.

CSE Uniserve

CSE Uniserve delivers comprehensive protection, control, and monitoring solutions for utilities, industrial plants, and renewable energy systems. They offer relays for bus protection, transformer protection, motors, and transmission lines, with fast fault detection and isolation capabilities. CSE Uniserve partners with GE Vernova to provide advanced relay technologies and focuses on enhancing system reliability, asset management, and operational safety .

MerCs

MerCs is a 100% Australian-owned supplier of electrical relays and safety protection equipment. They provide reliable and safe relay solutions for various electrical applications, focusing on protective and monitoring relays for industrial and commercial systems .

Additional Resources

For a broader list of suppliers and distributors of protective and monitoring relays in Australia, GlobalSpec provides an interactive directory to locate manufacturers and service providers across the country . These companies collectively cover a wide spectrum of relay protection needs, from medium- and high-voltage applications to digital integration and advanced monitoring, making them suitable partners for utilities, industrial operators, and renewable energy projects in Australia.