PowerTech 120Watt 240VAC to 120VAC Isolated Stepdown Transformer - Part # MF1080PowerTech 120Watt 240VAC 120VAC Stepdown Transformer. Part No. MF1080, Steed Part No. STIG DX 120. Converts Australian & New Zealand 240V power to US 120VAC. Quality fully enclosed stepdown transformer with fold up metal carry handles, approved 3 wire power cord & US style 2 pin 110 120V socket with earth. The primary (240V) & secondary (120V) are totally electrically isolated (Dieletric isolation). This is the safest way of making a mains voltage