Australian 240V Step-Down Voltage Converters Guide
Safely operate imported American (110V/120V) and Japanese (100V) electrical appliances from Australian 230V–240V mains power. All PAC step-down units feature our 2-Year Replacement Warranty with same-day dispatch before 2:00 PM ACDT from Adelaide.
Quick Transformer Sizing Calculator
Enter either your appliance's Watts (W) or Amperes (A) along with the voltage to see the calculated power draw and our recommended transformer:
| Model & Capacity | Recommended For | Price (AUD) |
|---|---|---|
| PAC ST-200 (200W) | Shavers, electric toothbrushes, small chargers | $126.00 $88.00 |
| PAC ST-500 (500W) | Gaming consoles, laptops, audio DACs | $149.00 $99.00 |
| PAC ST-1000 (1000W) | Kitchen stand mixers, sound receivers, blenders | $229.00 $124.95 |
| PAC ST-2000 (2000W) | Power tools, vacuum cleaners, heavy kitchen gear | $269.00 $169.95 |
| PAC ST-3000 (3000W) | Espresso machines, commercial appliances, heaters | $408.00 $249.00 |
| PAC ST-5000 (5000W) | High-demand appliances, dryers, workshop equipment | $379.00 $299.00 |
| Isolation Model | Primary Application | Price (AUD) |
|---|---|---|
| PAC STIS-100 (100W) | Audiophile pre-amps, turntable decks | $162.00 $81.00 |
| PAC STIS-300 (300W) | Hi-Fi audio amplifiers, studio monitoring | $246.00 $123.00 |
| PAC STIS-600 (600W) | High-end stereo systems, medical test gear | $300.00 $150.00 |
| PAC STIS-1200 (1200W) | Commercial sound rigs, laboratory electronics, pro audio | $572.00 $449.00 |
| PAC STIS-2400 (2400W) | Heavy studio setups, medical grade isolation, industrial lab | $1,100.00 $940.00 |
| PAC STIS-3000 (3000W) | Maximum capacity commercial isolation & continuous load | $1,400.00 $1,180.00 |
| Product Details | Type | Price (AUD) |
|---|---|---|
| PAC PowerTran 75VA Stepdown Transformer | Compact Step-Down | $105.00 $74.00 |
| PAC PowerTran 100VA Stepdown Transformer | Compact Step-Down | $139.00 $98.00 |
| AU to US / Japan / North America Adapter Plug | Travel & Pin Adapter | $20.00 |
| 10A to 15A Adaptor with RCD & Overload Protection (Arlec) | Circuit Safety Adaptor | $98.00 $84.00 |
| 10A to 15A Heavy-Duty Adaptor with RCD & Overload Protection | Circuit Safety Adaptor | $125.00 $109.00 |
Important Selection Guidelines
What is the difference between PAC ST Autotransformers and STIS Toroidal Isolation?
PAC ST Autotransformers: Feature a shared copper winding. They provide the most efficient, compact, and economical voltage reduction for standard household appliances, kitchen equipment, and power tools.
PAC STIS Toroidal Isolation: Feature separate primary and secondary copper windings with zero direct electrical contact. This provides true galvanic isolation, filtering out ground loops, electrical hum, and line noise—essential for high-end audio gear and lab equipment.
Can Japanese 100V appliances run safely on 110V/120V US transformers?
No. Supplying 120V to an appliance designed for Japanese 100V mains runs the device approximately 20% over-voltage. This causes motors to run excessively fast, generates internal heat, and risks damaging sensitive Japanese electronics over time. Always select a transformer rated specifically for 100V output.
Startup Inrush Current for Motorized & Heating Appliances
Appliances with motors, pumps, compressors, or heavy heating coils (such as KitchenAid mixers, blenders, power tools, and espresso machines) draw an initial startup surge current of 2.5× to 3× their continuous running wattage. Ensure you factor in this headroom to prevent tripping safety overload switches.
Need personalized sizing or bulk pricing?
Contact our Adelaide technical team directly for appliance matching advice.
View Full Transformer Range Contact Us
Sign In