Star Delta has been designing and manufacturing transformers to keep Australia energised for over 50 years. One of Australia's most established transformer manufacturers, locally made in NSW and built to last.

Our locally manufactured range spans single-phase and three-phase transformers (5VA–200kVA Dry Type up to 11kV), power transformers (Supply partner range designed and built from 500kVA to 20MVA voltage range 11-66kV) including Resin Cast and Oil filled), step-up and step-down transformers, isolation and auto transformers, motor-starting auto transformers to AS 1202, DC solutions, and fully custom special transformers. Standard sizes ship on short lead times — many within 4–7 days.

Special capabilities include White label manufacturing, defence specifications, rail specification capability (Sydney Metro), Marine and Mining designs.

Founded in the post-war era on hands-on electrical engineering skill, we’ve grown by combining the technical strengths of Special Transformers, Sydney Transformers, Hunter Transformers, ABW Transformers, and Transtronics.

Our mission is simple: identify our customers’ electrical challenges and engineer the right solution. We honour our commitments and do what we say — and that’s how we’ve earned trust for half a century.

Need a transformer built to spec? Contact us at stardelta.com.au or call (02) 9681 0711.

Star Delta Pty Ltd

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Star Delta Pty Ltd

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