240V to 120V Step Down Isolation Transformer – 250VA Heavy Duty Power Converter
Designed for safe and reliable operation of 110–120V equipment from Australian 240V mains supply, this fully enclosed step-down isolation transformer provides a robust solution for powering imported electrical and electronic devices.
Featuring a rugged steel enclosure, integrated fold-away carry handles, approved Australian 3-pin mains input lead, and a US-style 3-pin output socket (compatible with both US 3-pin and 2-pin plugs), this transformer is ideal for precision equipment, sensitive electronics, and applications requiring electrical isolation between input and output.
Unlike standard voltage converters, this unit provides true dielectric isolation between the 240V primary side and the 120V secondary side, improving safety by preventing direct electrical connection between the two circuits. The protective earth connection is maintained through to the output socket, ensuring connected equipment remains properly grounded.
A built-in resettable circuit breaker provides additional protection against overload conditions, eliminating the need for replacement fuses.
Key Features
- Converts Australian 240V AC mains supply to 110–120V AC output
- Fully electrically isolated primary and secondary windings
- Protective earth continuity from input to output socket
- Suitable for precision electrical and electronic equipment
- Heavy-duty steel enclosure for durability and protection
- Compact design with fold-up metal carry handles
- Built-in resettable circuit breaker protection
- US-style 3-pin output socket accepts standard US 2-pin and 3-pin plugs
- Ideal for imported equipment requiring 120V supply
Recommended Applications
- Imported 110–120V electrical equipment
- Precision electronic devices
- Laboratory and test equipment
- Medical and healthcare-related equipment
- Equipment used in high-moisture environments where electrical isolation is required
- Sensitive electronics requiring a clean and isolated power source
Important Isolation Information
This transformer provides complete electrical isolation between the 240V input and 120V output circuits. The primary and secondary windings are separated to provide an additional level of safety compared with conventional voltage converters.
Because the earth connection is maintained through to the 120V output socket, connected equipment remains properly grounded while benefiting from isolated power conversion. This makes the transformer particularly suitable for applications where safety is critical, including medical-related equipment, precision electronics, and equipment operating near moisture or wet environments.




