4 Montore Rd (PO Box 5230), Minto NSW 2566, Australia

sales@circlec.com.au

Why Choose Circle C Transformers

Why Choose Circle C Transformers for Your Power Solutions

Over 50 Yrs of Engineering Excellence

With more than five decades of transformer design and manufacturing experience, Circle C has become one of Australia’s most trusted names in electrical engineering. Our long-standing history reflects our commitment to precision, reliability, and performance.

100% Australian-Owned & Operated

Proudly based in Australia, we design, prototype, and manufacture locally to the highest national and international standards. Our Australian ownership ensures fast communication, quick turnaround times, and consistent after-sales support.

End-to-End Custom Design

From concept to commissioning, we handle every stage of production in-house — including consultation, CAD design, winding, assembly, and testing. This means you get a transformer that’s engineered exactly to your specifications, without compromise.

TransparentCertified Quality & Compliance

All Circle C products meet or exceed AS/NZS and IEC international standards. Every unit is rigorously type-tested, inspected, and certified to ensure reliability and safety in even the harshest conditions.

Proven Reliability in Harsh Environments

Our transformers are built to perform where others fail — from mining sites and railways to renewable installations and coastal industries. With reinforced insulation, precision winding, and durable enclosures, our products thrive in demanding conditions.

Innovative Technology & Continuous Improvement

We continuously invest in research and development to stay ahead of industry needs. Using advanced design tools and modern materials, we deliver energy-efficient, low-loss transformers that support smarter and greener power systems.

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